Kolkata has dozens of app development companies — but quality varies wildly. A great app can transform your business; a poorly built one drains your budget and frustrates users. Use this 10-point checklist to separate the professionals from the rest.
The 10-point checklist
- A real portfolio — ask for live apps on the App Store and Play Store, not just screenshots.
- The right tech stack — native (Swift/Kotlin) or cross-platform (Flutter, React Native). Make sure they justify their choice for your project. See our mobile app development approach.
- Clear, written quotes — itemised scope, timeline and cost. Vague quotes lead to surprise bills.
- UI/UX focus — good apps are designed, not just coded. Ask to see their design process.
- Both platforms covered — iOS and Android, plus a plan for the backend and web presence (web development).
- Communication & timezone — clear English, regular updates, and availability in your hours.
- Post-launch support — apps need updates for new OS versions. Check their support & maintenance plans.
- You own the code & accounts — insist on owning your source code, App Store and Play Store accounts.
- Security & data practices — especially if you handle payments or personal data.
- Honest references — talk to a past client if you can. Reputable firms are happy to connect you.
Red flags to avoid
- Prices that seem too good to be true (corners will be cut).
- No written contract or unclear ownership terms.
- Can't show a single live, published app.
- Pushy sales but vague on technical detail.
Bottom line: The best app company in Kolkata isn't always the cheapest — it's the one with a proven portfolio, transparent pricing, and real support after launch. Tick these 10 boxes and you'll invest wisely.