Mobile apps people keep on their phone.
Native-quality iOS and Android applications — usually cross-platform with React Native or Flutter — designed around real user workflows, store release and ongoing updates.
- Team
- 50+ IT professionals
- Delivery
- Design, build, release, support
- Engagement
- Project or dedicated team
What this covers
Concrete work we take on under mobile app development — not a catalogue of buzzwords.
- Consumer and B2B mobile products
- Apps that sync with existing web backends
- Push notifications, offline-first behaviour and device features
- App Store and Play Store submission support
Problems we take on
If one of these sounds familiar, we have likely shipped something close — and we will say so if we have not.
- You need one product on both iOS and Android without two separate teams.
- Your web app is not enough — users expect a mobile experience.
- An existing app is stuck on an outdated framework.
Technologies
Stacks we use when they fit the product and your team — not a mandatory toolkit for every engagement.
- React Native
- Flutter
- Swift
- Kotlin
- Firebase
- REST/GraphQL
How we work
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Scope before code
We write what is being built, what is excluded, integrations, dates and cost basis before the build starts. Changes get quoted before they get coded.
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Talk to the people doing the work
You meet named engineers and designers. There is no account manager translating technical questions in both directions.
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Working software every two weeks
Increments land on staging you can open and use. Progress you can click on beats progress in a status report.
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You own everything
Repository, cloud account, domains and credentials stay yours. We work in your accounts wherever possible.
FAQ
React Native or Flutter?
We recommend based on your team skills, UI needs and existing codebase — not a single default for every project.
Do you handle store releases?
Yes. We prepare builds, listings and release pipelines; you own the developer accounts.
Do you build native iOS and Android apps?
When device features or performance need it. Most products ship faster with React Native or Flutter and stay maintainable as one codebase.
Can the app share a backend with our web product?
Yes. We design APIs and auth so mobile and web stay in sync — one product, multiple clients.
What about offline and push notifications?
Both are in scope when the workflow needs them. We design sync and notification behaviour up front so they are not bolted on later.
Related
Services that often sit beside mobile app development on the same roadmap.
Why Three Index
Founded in 2020 in Ahmedabad, Gujarat. Fifty-plus IT professionals. More than five hundred projects shipped across product and enterprise work.
We are large enough to staff serious products and small enough that the people who wrote a module can still explain it. See how we operate, browse case studies, or join the team.
Tell us what you are trying to build.
Send a short description of the project. You will get a reply from someone technical — with questions worth answering, not a brochure.