“Three quotes for the same app, and the highest is many times the lowest.”
Each quote counts different things. We write the scope first: every screen, feature and integration, so you compare like with like.
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Digital · App development · Flutter apps
Flutter app development company in India
PromotEdge is an integrated marketing agency in India that offers flutter app development to businesses across the country. Flutter apps for businesses that need one app on Android and iOS. We write the scope first, so you can compare quotes fairly.
A strategist calls you in one working day.
In short PromotEdge is a marketing and growth agency in India that plans and builds Flutter apps for Indian businesses. Flutter lets one shared codebase run on Android and iOS, and each app we build has one clear job: repeat orders, bookings, leads or field visits.
/ 01 What we build
Flutter app parts, and who supplies what
| Part | What we build | Who supplies it |
|---|---|---|
| Scope | Every screen, user type, feature and integration, written before the quote | Your team, in one or two calls |
| Flutter app | One codebase for Android and iOS | Built by us from the approved scope |
| Admin panel | Where your team manages orders, bookings, users and content | Built by us |
| Integrations | ERP, CRM, payments, delivery partner, SMS, WhatsApp, each listed by name | Your accounts and access |
| Testing | Real Android phones and iPhones, slow networks and offline | Done by us, with your sign-off |
| Store launch | Listings, screenshots, privacy details and review notes for Google Play and the App Store | Your store accounts |
| Upkeep | Updates, fixes and new store versions after launch | An upkeep plan, if you choose it |
Store accounts, servers, SMS, maps and payment gateways are third-party costs, billed separately and shown before you approve.
This is part of our App development work. See the full App development service
- Since 2015
- 65+ team
- 121 clients
- ISO 9001:2015
What people say
What clients say about PromotEdge
“We are thoroughly impressed with the extensive knowledge and professionalism demonstrated by PromotEdge. Their adept management of our digital and creative requirements has significantly contributed to our satisfaction with their digital marketing services and expertise.”
Rahul MishraAssistant Manager Digital Marketing & Ecommerce at Magik LightingElectricalsABP Education
“Working with PromotEdge has been an enriching experience for ABP at many different levels. Your understanding of the digital space, customized brand solutions and prompt servicing have helped us achieve our brand goals with so much ease.I would like to especially thank the creative development team, the digital strategy team and above all the servicing team with whom I have worked in close association with, for their all-round support. I wish you all the best in your upcoming projects and I look forward to collaborating with you in future as well.”
Satabdi SahuLead - Brand and Content at ABP EducationEducationTATA Metaliks
“PromotEdge has been working with our organization for social media management and other creative activities. They are responsive, supportive and hard working. We look forward to a long and positive relationship with them.”
Medha SharmaStrategic Head at TATA MetaliksSteel and metals
“PRAN & PromotEdge have been working together for last 1.5 years. Throughout, the work experience is good and satisfactory.As a client, we found PromotEdge very professional and dedicated towards any project assigned to them.Most importantly, They have a bunch of energetic young people who always think from clients’ point of view and come up with the solution which is appropriate for them.I would personally refer PromotEdge to those who want creative and contemporary work.We wish PromotEdge a successful journey ahead.”
Sharif Rezwan KabirBrand Manager at PRAN RFL GroupFMCGBrahmaputra Volleyball League
“I really want to thank Sayantan and his team from PromotEdge because what I find good in them is that, the team.When the team is wonderful, the outcome will definitely be wonderful. I have seen the first cut of the reel which they shot the first day, and they gave us on the morning of the second day.The entire first day they worked so hard and over the night they have edited and on the morning they shared it with us.This is just fabulous and the commitment they have shown. The FIVB team has said that they are very happy with team PromotEdge.And when I showed this clip to my friends, those who are from this industry, they (also said that they) have done a fabulous work.So happy and compliments to the team -- Sayantan and PromotEdge team.Thank you.”
Abhijit BhattacharyaFormer Captain Indian VolleyBall Team; and Founder of Brahmaputra Volleyball LeagueSports“In the city of Kolkata , there are very few full service advertising agencies which are compact, agile, quick and yet have the vision and creative /executional abilities of large reputed agencies. My experience with PromotEdge has been extremely satisfying and they have done world class job for Brand Building exercise of LION INDIA.In my professional life spanning over 4 decades I have always worked with leading agencies like Lintas, Grey, etc so my benchmarking was rather high. I am delighted to say that i did find the agency measuring up nicely on every parameter of our expectations. The team […] comes majorly from experienced staff who have had experience in large agencies. Added to this is the” young oozing with unique new.”
Hardeep SinghMarketing ConsultantShyam Metalics Group
“We have been working with PromotEdge for almost a year. We have engaged them to manage our Digital marketing campaigns and are impressed with the outcome. Within weeks, we had noticed an increase in performance and they continuously worked on adapting to a new strategy if required to get the maximum mileage for us based on our requirements. A big thank you to their team, and I would highly recommend them to anyone who is considering growing on their Digital Space.”
Shubham GadodiaDeputy Brand Manager at Shyam Metalics GroupSteel and metalsUnimark Group
“As a progressive and emerging digital marketing company, PromotEdge is doing something right to enhance the experience of companies associated with them.The format they have created is great, there is a smooth flow of communication, great brainstorming sessions and additionally super ideations and executions.Pritha, the account manager, has always been supportive. Whether day or night, weekday or weekend, she came through and solved the problems.…”
Anish Basu MallikMarketing Executive at Unimark GroupReal estate
“PromotEdge is one of the most hard working creative agency that LISTENS ! Do I need to say anything more ?!!!!Saurav is one of the most open person I have come across who is ready to speak abt the elephant in the room , that no body wants to talk about !”
Harsh GuptaManaging Director at Rishta FoodsFMCGBirdman Chemeng Pvt Ltd.
“PromotEdge has been a unique creative group amongst unique creativity world. Approaching, analysing, understanding the deliverables with ethos and transferring the same into a spellbound creative identity, just cut out for clients’ requirement are signature values of the team. A huge ROI, thy name is PromotEdge.”
Rajat ChatterjeeHead Business Development at Birdman Chemeng Pvt Ltd.Manufacturing
“An aligned partner is always a welcoming step. Someone who can think deep through lines, understand the matrix of product management. Fortunate enough, PromotEdge has been a partner in progress for me. Their uniqueness lies in their hands down knowledge of delivering the strategy and communication needed for the hour. A practical approach to ensuring return of investment has been the day one mantra. An advisory to an executionist, the systematic approach by team PromotEdge has been the impeccable.”
Bobby SrinivasChief Manager Marketing & Brand Marketing at Utkarsh IndiaSteel and metals“I had a great time in Kolkata, I met entire PromotEdge team and they are amazing. Design language that they follow is crazy, the copywriting is crazy. I think they are one of the best digital marketing agencies, not just in Kolkata, entire eastern region and I think brand should not leave the chance to interact with these guys, make stories together.So, if I had something here, I would have definitely collaborated with them and worked. Now is the time, I mean it’s not even a question whether digital is important or not you don’t have an option today. Go digital work with PromotEdge and create your brand stories. Thank You.”
Manish PandeyConsultant & Coach to Content Creator“The PromotEdge Agency stay with us all these 3 days, since when we arrived..more, more than 3 days. Since in the airport, they stayed together with us (FIVB team).Sayantan and his team is providing you to see this video.I just (want to say) _Shukriya_. Thank you so much for your team, because we are here in front of the camera but all the team is behind. The entire team together did this great job so that you can see how much volleyball is a lovely sport.”
GibaBrazilian Former Volleyball PlayerSports
“PromotEdge and their team did an excellent job with our website. They engaged with every team member, understanding their needs with great patience before collating them into a user requirement and a design spec. The result was both aesthetically pleasing and usable. PromotEdge continues to support us and our ever-growing and very demanding wish list. We hope to grow this relationship beyond website design and into content development. I am confident that PromotEdge's team will continue to guide us in delivering product content to our global customers, making the website an important tool for product awareness and lead generation.”
Bimal ShahExecutive Director at Fine Organic Industries LimitedManufacturing
“I've known PromotEdge for quite a few years. PromotEdge is passionate, knowledgeable, and destined for success. What stands out is their positivity, energy, passion, and innovative thinking. They bring a warm presence to their work. Best wishes to PromotEdge.”
Mahendra SurekaFounder & CEO at India MACJ - A Buyers Choice Home InspectionsReal estate
“I am delighted with the successful launch of our new website, thanks to the exceptional support from PromotEdge. I extend my gratitude to Benjamin and the team for their dedication and hard work, which has resulted in a new, fresh-looking site that perfectly meets our expectations.”
Mom MitraMarketing Head at IleadEducation
“I commend PromotEdge as a content and advertising partner. I applaud their top-notch team, swift problem-solving, and outstanding digital media work for my brand. I express my happiness and eagerness for a long-term partnership.”
Priyanka GuptaDirector at Nitya Gold & DiamondsJewellery retailPrime Volleyball League
“I would just like to congratulate, PromotEdge Led by Sayantan and his Team who have done an absolutely fantastic job of branding for the Kolkata Thunderbolts, the Branding, the social media campaign was bang on, and I think it help not just the Kolkata Thunderbolts but its really helped me because in the East there was at least one Team that looking very well promoted and branded. Thanks guyz, well done.”
Joy BhattacharjyaCEO at Prime Volleyball LeagueSports
“Hi, my name is Hitesh Malhotra. I'm working in FIVB. We are working with PromoteEdge (with Team Sayantan).I would like to give you a brief detail. So when we started this project, we had a good discussion with them. And personally, I feel PromotEdge is kind of a one stop solution for us. So basically, they provided us the whole storyboarding regarding the digital assets and how we can use those with our ambassadors programme.They helped us a lot to structurize the whole concept from our side. So in fact, there were a lot of great ideas they provided, guiding us...what we should do and what we should not do in this regard.And the best part was that they were very clear from there, from the whole blueprint. So they understood our request from the proposal and then accordingly they executed it.”
Hitesh MalhotraSports Development at Fédération Internationale de Volleyball - FIVBSports“It’s a great way to be back at PromotEdge. I had a great time working them in Kolkata Tunderbolts doing the Volley Biswas character and they all are like good friends like family Saurav Bhaiya, […], and as I speak, I see Sayantan da walking in. HA HA! But it’s been a great experience I am glad to again meeting them and being here at the PromotEdge. Make Calcutta relevant again.”
Priyam GhoseContent Creator/ 02 Talk to us
Tell us what is not working
A strategist calls you in one working day. We use these details only to reply to you, by call or WhatsApp.
- One page, six answers.
- Where the growth is, what to say, which channels.
- A starting budget, quick wins, what to measure.
Rather talk now?
What happens after you ask
- 01
A strategist calls you
In one working day: a 30-minute call with one of our strategists about your business and what is not working.
- 02
You get a 1-page plan
A short, honest plan: what to fix first and what we would do. It is free.
- 03
A quote, if you want one
If you want to go ahead, we send a quote within 2 working days.
We confirm the timeline in the quote. Contracts start at 3 months, with 30 days' notice to stop. A single job, such as one event or one print run, is quoted as one project.
App development for your industry
- D2C and ecommerceAn app with one job: making repeat orders easy.
- Industrial manufacturingAn app that logs your sales team's plant visits.
- ExportersMarketing for exporters
- SportsAcademy slots and trials booked through a simple app.
- SaaS and techMarketing for SaaS companies
- AI companiesMarketing for AI companies
- Electricals and appliancesA dealer app for repeat orders and service requests.
- FMCGAn order app that lets retailers reorder in a few taps.
- StartupsOne job, one simple app, before you build more.
- Construction equipmentService engineers log site visits in a simple app.
Show all industriesShow fewer
- Energy and solarSurvey teams record roof details on a phone app.
- AutomotiveA service booking app for your vehicle owners.
- BFSIAn app for field agents to log visits and leads.
- Building materialsReps log visits to masons and dealers in one app.
- EducationParents book counselling slots and campus visits in an app.
- FranchiseAn ordering app for outlets to restock.
- Gaming and esportsA companion app for tournament sign-ups.
- HealthcareA booking app for tests and home sample pickups.
- HospitalityA repeat-order app for your restaurant's regulars.
- IPO and listed companiesMarketing for listed companies
- Local businessesMarketing for local businesses
- LogisticsA phone app for drivers and pickup teams.
- Media and entertainmentMarketing for media and entertainment
- NGOs and social sectorField staff log village visits in a simple phone app.
- Political campaignsMarketing for political campaigns
- Professional servicesMarketing for professional services
- Real estateA site-visit app that logs every buyer your team meets.
- Retail and jewelleryAn app for repeat buyers and store visit bookings.
- Steel and metalsRepeat orders and rate checks for dealers, in one app.
- Tea and agribusinessBuying agents record garden visits on a phone app.
/ 03 Common challenges
Common challenges we solve
“The Android app works, but the iPhone version lags.”
One Flutter codebase keeps both in step, and every release is tested on both.
“The app looks fine in the office and breaks on a budget phone.”
Every flow is tested on real Android phones and iPhones, on slow networks and offline, before it reaches the stores.
“The app needs the camera, GPS or Bluetooth all day.”
We say early where native work is needed, and plan it, instead of finding out late.
“Nobody knows who owns the code or the store account.”
The code and the store accounts are in your name, and the scope says so.
“Downloads come, and then people stop opening the app.”
Each app has one job, and the first screen leads straight to it.
What we cannot fix
- “Can Flutter run an app that uses GPS and the camera all day?”
Not always well. Apps that lean on these all day often need native work, so we say that before the quote and plan for it.
- “Can you make the app very small for budget phones?”
A Flutter app carries its own engine, so the download is a little larger. We check the size before launch; if space is very tight, a web app may suit better.
- “Will people keep opening the app once they download it?”
No build can promise that. Give the app one job, and make the first screen lead straight to it.
/ 04 How we work
How we build a Flutter app, from scope to store
We confirm the timeline in the quote, once the scope is written.
- 01
Name the job
What the app must do first, and for whom. If we cannot name the job, we do not start building.
- 02
Write the scope
Every screen, feature and integration, in plain words you approve.
- 03
Design the screens
The main flows on a phone, checked with your team before any code.
- 04
Build in Flutter
One codebase for Android and iOS, with the admin panel and integrations.
- 05
Test on real phones
Budget Android phones and iPhones, slow networks and offline.
- 06
Launch and look after it
Store submission, then updates and fixes on the upkeep plan you choose.
Led by Benjamin, Web lead
Our beliefOur job is to impress your customers, not you.
/ 05 Flutter app development
What is Flutter app development, and when does it fit?
Flutter app development means building one app, from one shared codebase, that runs on both Android and iOS. It usually cuts build time and keeps both versions in step.
PromotEdge, a Flutter app development company in India, builds Flutter apps for businesses, tests them on real phones and publishes them on Google Play and the App Store.
Flutter fits most business apps: ordering, bookings, lead capture, loyalty and field-team apps. It is the wrong pick when an app leans on the camera, GPS or Bluetooth all the time, where native work is often needed, or when a simple web app would do the job. We tell you which, before you pay for a build. See all our mobile app development work, or web application development.
/ 06 Cost
Flutter app development cost in India: why quotes differ so much
Flutter cost guides online disagree widely, some by about ten times for a similar app, because each counts different things. We do not publish a price. We write the scope first, then quote build, testing, launch and upkeep on separate lines.
What affects the cost
- Screens, user types and features in the first version
- Android only, iOS only, or both
- Integrations: ERP, CRM, payments, SMS, WhatsApp
- Offline mode, live tracking, chat or other heavy features
- Admin panel, reports, and security needs such as health or children's data
How we price it
- Before we quote, we ask 5 things: what the app must do first, and what one order, booking or lead is worth to you; who uses it, customers, staff or both, and on which phones; android only, iOS only, or both; what it must connect to: your ERP, CRM, payments, SMS, WhatsApp or maps; heavy features: offline use, live tracking, chat, or close work with the camera, GPS or Bluetooth.
- We look at your current systems, users and the stores you want
- We write the scope, then quote each part on its own line
What you get in the quote
- First-version screens, user types and features
- Integrations, each listed by name
- Testing, store launch and the admin panel
- Third-party costs shown separately
- Ownership of code and store accounts, and the upkeep plan
When you compare quotes, compare the scope, not the total: who owns the code, how much testing is included, and what upkeep costs in year two. Want us to scope yours?
When we would not pick Flutter, and what we pick instead
The app lives on the camera, GPS or Bluetooth
Apps that lean on these all day often need native work. We may build the heavy part natively, or the whole app natively, and we say so before the quote.
Your team already works in React Native
If your developers know React Native, a second framework adds cost. We build in React Native in that case.
A web app would do
If people use it at a desk, or once in a while, a web application may do the job without store listings.
Very little phone space
A Flutter app carries its own engine, so the download is a little larger. For buyers on budget phones with little space, we check the size before launch.
Brands and people are named only as public examples. They are not PromotEdge clients or endorsers unless stated.
Common questions
Short answers. For anything else, call or WhatsApp us.
-
It is building one app, from one shared codebase, that runs on Android and iOS. It usually cuts build time and keeps both versions in step. PromotEdge builds Flutter apps for Indian businesses and publishes them on Google Play and the App Store.
-
It depends on the screens, features, integrations and which phones you need. Online guides disagree widely, because each counts different things. We write the scope first and quote each part on its own line, with third-party costs shown separately.
-
At least five things: what the app must do first, and what one order, booking or lead is worth to you; who uses it, customers, staff or both, and on which phones; android only, iOS only, or both; what it must connect to: your ERP, CRM, payments, SMS, WhatsApp or maps; heavy features: offline use, live tracking, chat, or close work with the camera, GPS or Bluetooth. Without them, a quote is a guess. Flutter is the wrong pick when an app leans on the camera, GPS or Bluetooth all day, or when a web app would do, and we say so before you pay for a build.
-
Both share one codebase across Android and iOS. If your team already works in React Native, we build in it. Otherwise we pick the one that suits the app, and say why in the scope.
-
Yes. We prepare the listings, screenshots, privacy details and review notes, and submit the app from your store accounts.
-
You do. The code and the store accounts are in your name, and the scope says so.
-
Ongoing monthly work has a 3-month minimum. After that you can stop with 30 days' notice. A project has a clear end, and we confirm its timeline in the quote. The smallest first step, a free 30-minute call and a one-page plan, commits you to nothing.
-
Before work starts, we agree in writing who your main contact is, how often you meet, and who signs off each piece of work. The person who plans your campaign talks to the person who designs it every day. The seniors you meet at the first call are the people who run your work.
-
We work across India, with deep roots in East and North-East India. We visit you in your city every month, and we review progress with you online every week, so quality and delivery stay on track. When a job needs it, we place our team at your site.
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