Open to new client projects
I build apps people keep using.
I'm Kartikeya Mishra, an independent engineer in Lucknow. I design and ship mobile apps, PWAs and AI features for founders, and I'm building a few apps of my own.
Works in Flutter, Firebase, Next.js, Node and LLM APIs.
In the lab, by invitation
Three apps are in private development. Invites go out in small waves, so every early user gets a real conversation, not a ticket number.
Project 01
Private build
AI-native mobile app for iOS and Android
A personal assistant that finishes small tasks instead of just reminding you about them.
Project 02
Design partner phase
Web app for small teams
Turns scattered client requests into a priced, trackable plan in minutes.
Project 03
Research
Developer tool
Shows what each AI feature in your product costs per user, before the bill arrives.
Early access is free. Descriptions show current direction only; features, timing and pricing may change before release, and joining the list doesn't create any obligation for you or a guarantee of access.
Know the number before you ask for quotes
The free calculator prices an app the way engineers actually scope one: feature by feature, then testing, project management and compliance, for five kinds of teams. Every assumption is on the page.
Open the calculator- Client in India
- ₹3.6 – 19 lakh
- Client abroad
- $7,500 – $34,800
Phase 1 on one platform: from ₹2.6 – 13 lakh ($5,400 – $22,800), about 3–7 weeks.
- Effort
- 300–695 hours
- Calendar time
- 4–10 weeks
Have an app to build? Here's how we'd work
- 1
Scope in writing
A short discovery phase turns your idea into screens, a feature list, a milestone plan and a cost you can compare with other quotes.
- 2
Build in the open
Weekly demo builds on your phone, a shared board, and payment only when each milestone is delivered and accepted.
- 3
Launch and hand over
Store listings, analytics, privacy pages and a clean repository you own, plus a bug-fix window agreed in the contract.
Recent writing
All articlesHow to write an app requirements document developers can actually quote from
A practical app requirements document (PRD) template that gets accurate, comparable quotes: users, journeys, screens, rules, integrations and acceptance.
4 min readCan AI build my app? What AI app builders and chatbots can and can't do in 2026
An honest look at building an app with ChatGPT, AI coding tools and AI app builders: where they save money, where they fail, and when to bring in an engineer.
5 min readHow to keep LLM costs under control in a production app
A practical playbook for AI features that earn more than they cost: per-user maths, routing, caching, prompt trimming, hard limits and abuse protection.
5 min read
Questions people ask
What does Kartikeya Mishra build?
Mobile apps (Flutter, iOS and Android), progressive web apps and AI-powered SaaS, from first sketch to store release. Typical work: MVPs for founders, AI features with cost controls, and privacy-compliant data flows under India's DPDP Act and the EU GDPR.
What is the early-access list?
A free, invite-only list for the apps being built in the studio. Invites go out in small waves so feedback can be handled properly. Joining doesn't commit you to anything, and you can remove your email at any time.
How much does it cost to build an app?
It depends on features, platforms, design depth, compliance and who builds it. A small cross-platform MVP built by an Indian team often lands between a few thousand and twenty-five thousand US dollars. The free calculator on this site breaks your idea down line by line.
Do you work with clients outside India?
Yes. Projects run remotely with written scopes, milestone-based payments and weekly demos, and are priced in USD, GBP, EUR or INR.