The story
Fifteen years of free time,
spent making things.
Purvakalpa is what fifteen years of evenings and weekends add up to. It started as practice and a cure for boredom, and it still is: 15 apps on the App Store, seven novels, and the engines, docs and notes behind them.
How the hours added up
- Fifteen years ago
The first spare hours
It starts at IIT Kharagpur, alongside a dual degree in naval architecture: building software in the hours nobody had asked for.
- 2015 to 2025
Evenings and weekends
The practice lived in the hours left over: small experiments, one at a time, mostly to see how things work and to keep boredom away.
- 2024
A point of view
Storyline, a private writing app for people whose words are confidential, turns the practice into a thesis: the intelligence should run on your own devices, with no accounts and no servers. Every Purvakalpa app since is built on it.
- January 2026
The first app ships
Kokoro goes live on the App Store: a wellness companion with the model on your phone.
- April to August 2026
Fourteen more
Pet care, exam preparation, chess and four more games, a planner, private writing, a lunar calendar and a voice keepsake. Each one live on the App Store, each one keeping your data on your devices.
- September to October 2026
Seven novels
The free time was never only code. Two novels from the Rig Vedic war of the ten kings, the Unread trilogy, a desert kingdom of two brothers, and the first book of The Shore, all published on Kindle.
- Today
Still practice
Release notes for every app, technical docs you can check, a lab of what comes next, and a journal of how it was made. All of it still made in free time.
CompAnimal
Saras JEE
Charaka NEET-UG
Charaka NEET-PG
Charaka NEET-MDS
Chess: Knight Fever
Tasker
Bingo Fever
Card Fever
Storyline
Word Fever
Kāla
Board Fever
StillheardWhat fifteen years settled on
Native Apple platforms
Built directly on Apple’s frameworks, in Swift, because that is how you reach on-device machine learning and the privacy hardware the rest depends on.
The AI runs on your own hardware
Models run on the phone, iPad or Mac in front of you. A cloud model is opt-in, under your own key, feature by feature.
Nothing leaves your iCloud
There is no Purvakalpa backend: no database of users to breach and no logs to hand over. Your data stays on your devices or in your own iCloud.
Your devices are the backend
The phone, iPad and Mac you already own can share the work between them over your own Wi-Fi.
The name
Pūrvakalpa पूर्वकल्प
Pūrva: before, first. Kalpa: an aeon, and also a plan or a design. I read it as the first design, the thinking that comes before anything ships.
Who builds it
Purvakalpa is one person, Eswar Venigalla, in Bengaluru. Every app, engine, page and novel here was made in free time.