P-01Finance
Fin Calc: Plan Now
EMI and SIP calculators that work offline, with no ads.
- Build choice
- Everything computes on the device, because a calculator that needs a login and a signal is not a calculator.
Ideation → design → build → release → maintenance
Your app on the
Play Store in 16 weeks
We take mobile apps from a one-line idea to a maintained Play Store release. You talk to the person building your app, get an installable build every two weeks, and own the code from the first commit.
Five of our own apps, live on Google Play
App briefTaking projects
- Platforms
- Android · iOS · Flutter · React Native
- Typical MVP
- 10–16 weeks to Play Store
- Engagement
- Fixed scope or monthly retainer
- First response
- Under 24 hours
5
Apps live on Google Play
2 wk
Between installable builds
01What we do
App development, end to end
ThynkBlox handles every stage of a mobile app: discovery and scoping, UX and UI design, the Android or cross-platform build, backend and integrations, the Play Store release, and ongoing maintenance. Hire us for the whole path, or join at the stage where you are stuck.
A-01
Ideation & discovery
We pressure-test the idea before it costs money, then hand you a scoped MVP and a written estimate you can budget against.
A-02
UX & UI design
Flows, wireframes and a full screen-by-screen UI kit in Figma — approved before a line of app code is written.
A-03
Android & cross-platform build
One codebase for Android and iOS with Flutter or React Native, or native Kotlin when the app leans on hardware.
A-04
Backend & integrations
APIs, auth, payments, push notifications and analytics wired in properly — Firebase, Supabase or a custom backend.
A-05
Play Store release
Listing copy, screenshots, privacy policy, data-safety form, signing keys and a staged rollout.
A-06
Maintenance retainers
Monthly cover for OS and SDK upgrades, crash triage, store policy changes and small feature work.
02Our own products
Live on Google Play
We ship our own apps, not just client work. Each one was designed, built, released and is maintained by the same team you would hire, so you can install the work before you commission any. They are small utilities on purpose: the point is the delivery path, from idea to Play Store to the update after that.
P-02Productivity
EchoNotes
Fast note-taking for capturing ideas before they slip away.
- Build choice
- We optimised for time-to-first-keystroke over feature count, because a note app is only used if it opens faster than the thought fades.
P-03Education
LearnBrew
A learning app that turns spare minutes into steady progress.
- Build choice
- We cut content into pieces that finish inside a short break, because a lesson you cannot complete is a lesson you abandon.
03How it works
Five stages, no surprises
Each stage has a fixed deliverable and your written sign-off before the next begins, so scope, cost and timeline stay visible from the first call to the Play Store rollout.
- 01
Ideation
1–2 weeks
We map the users, cut the feature list to what proves the idea, and hand you a scoped MVP definition with a written estimate and timeline.
- 02
Design
2–3 weeks
Flows, wireframes, then a complete UI kit and clickable prototype. You sign off screen by screen, so build never starts on an open question.
- 03
Build
6–12 weeks
Two-week sprints. Every sprint ends with an installable build on your phone and a short demo call. Scope changes are priced before they are started.
- 04
Release
1–2 weeks
Device testing, store listing, data-safety declarations, signing and a staged Play Store rollout. Crash and analytics reporting is live from day one.
- 05
Maintain
Ongoing
A monthly retainer covers OS upgrades, store policy changes, crash fixes and small features, so the app does not quietly rot after launch.
04Questions
Answers before you ask
The four we get most often: cost, timeline, native versus cross-platform, and who owns the code. Six more are answered in full on the FAQ page.
Q01How much does it cost to build an app?
Cost depends on scope: screen count, integrations, backend complexity, and whether you need one platform or two. Building with an India-based team is usually a fraction of a US agency price for the same scope. We do not publish price lists because a list would be wrong for your app. Send a short brief on WhatsApp and, after a scoping chat, you get an exact written quote against a written scope.
Q02How long does it take to build a mobile app?
A focused MVP usually takes 10 to 16 weeks from kickoff to Play Store release: one to two weeks of ideation, two to three weeks of design, six to twelve weeks of build, and one to two weeks for store review and rollout. Simple single-platform apps can ship in six to ten weeks. The largest variable is how quickly design sign-off comes back, which is why we ask for one decision-maker.
Q03Should I choose native or cross-platform development?
Choose cross-platform — Flutter or React Native — when you want both Android and iOS from one codebase at roughly 60 to 70 percent of the cost of two native builds. Choose native Kotlin or Swift when the app depends heavily on device hardware, background processing, or platform-specific performance. Most business apps do well cross-platform, and we put the recommendation and its reason in writing during discovery.
Q04Who owns the code and intellectual property?
You do. On final payment for each milestone, all source code, design files, and intellectual property transfer to you in writing. We push to your Git repository throughout the project, not ours, and the Play Store listing is published under your developer account so you keep control of releases and signing keys.
Next step
Tell us what you want to build
Send a one-line description of your app. You get a scope question or two back, then a written estimate — usually within 24 hours.