Apps · iOS, Mac and Android · From ₹1 lakh
Apps
Native iOS, Mac and Android apps, built end to end, with their own sync server and updater when they need one.
Your accounts and domain are in your name from day one. The code becomes yours once it's paid in full. Half up front for each stage.
What this work did
16
builds of SparrowOS for Mac shipped to a team through its own updater, the latest on 22 Sep 2026.
2,420
past-paper questions in a NEET prep app, each cut as an image so the diagrams stay exact.
~330 ms
for a spoken command in SparrowOS for Mac, understood on the Mac itself with nothing sent to the cloud.
One app, start to finish
SparrowOS for Mac
Before
An agency's team ran SparrowOS in a browser tab, and its notifications didn't reliably arrive.
What I did
- Rebuilt every page natively in SwiftUI: tasks, calendar, chat, mail, drive, notes, KPIs and all 16 analytics dashboards.
- Made it local-first: an encrypted copy of the database keeps it usable when the server has a bad day.
- Added commands from any app with Option+Space, spoken or typed, understood on the Mac itself.
- Built its own release pipeline: versioned builds, an installer, and an in-app updater with release notes.
- Sign-in with per-device tokens kept in the Keychain, each one revocable.
After
16 builds shipped to the team through its own updater, the latest being v0.5.0 on 22 Sep 2026.
Read the SparrowOS case study ↗
What you get
01 · iPhone and iPad
SwiftUI apps with Live Activities, alarms that break through silent mode, and calendar sync, like IITM Companion.
02 · Mac
Real Mac apps, not a website in a window: the dock, menus, notifications and keyboard shortcuts.
03 · Android
Kotlin apps built with Jetpack Compose, like the NEET prep app on a student's tablet.
04 · Its own server
A sync server when the app needs one, on your hosting or a small server of your own, like IITM Companion's.
05 · Works offline
Data kept on the device, encrypted, so the app still works on a bad connection.
06 · AI inside the app
An AI tutor or assistant with the API key kept on your server and a monthly spend cap, like the NEET prep app's.
07 · Updates
App Store and Play Store releases, or your own updater for apps your team uses in-house.
08 · Privacy
Sign-in tokens in the Keychain, encrypted local data, and nothing sent anywhere you didn't agree to.
What it costs
A fix or a feature
from ₹5,000
A bug fixed or a small feature added to an app you already have.
Usually a day or two.
An app
from ₹1 lakh
One platform: its core screens, sign-in and the server it needs.
Usually 3 to 6 weeks.
A bigger app
quoted after a call
iPhone and Android together, offline sync, or an AI feature.
Timeline set in the written plan.
Each stage is half up front and half at launch, by UPI or bank transfer, or by credit card in monthly instalments (EMI) through Razorpay. EMI interest is set by your bank.
How it runs
01
Tell me what you need
A message or a short call: the goal, the deadline and what already exists.
02
A written plan
Scope, steps and a quote, agreed before any work starts.
03
Built in steps you can see
A link you can open every week, not one big reveal at the end.
04
Launch, then measure
Checked against the numbers we agreed at the start.
Fair questions
- Who owns the app and the code?
- You do. The App Store and Play Store accounts are in your name from day one, and the code becomes yours once it's paid in full.
- Who handles the App Store?
- I prepare and submit the builds and handle review, under your developer account.
- Can my team try it before it's public?
- Yes, through TestFlight or a private build, from the first working version.
- iPhone, Android or both?
- Whichever your customers use. We decide in the written plan, before any code.
- What if something breaks after launch?
- Anything I built gets fixed free for 30 days after launch.
- How do we stay in touch?
- A preview link every week and a short update, on WhatsApp or email.
- Can I pay monthly?
- Yes, by credit card in monthly instalments (EMI) through Razorpay. EMI interest is set by your bank.
- Do you work with agencies?
- Yes, under your name or mine.
Not the right fit
A copy of a giant app on a small budget. Start with the one feature that matters most, and grow it from there.
Tell me about your app
A message or a short call. You get a written plan and a fixed quote before any work starts.
Based in India · IST (UTC+5:30) · Works remotely
Rather talk? WhatsApp or call +91 89289 61893.
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