Purvakalpa NotesBuild notes, opinions and the everyday work of making things, written in free time.https://purvakalpa.studio/enWed, 28 Oct 2026 00:00:00 GMTCard Fever 1.4: twenty-seven games, thirteen languageshttps://purvakalpa.studio/notes/card-fever-1-4-0/https://purvakalpa.studio/notes/card-fever-1-4-0/The biggest Card Fever update yet: India's table games with a Teach mode, Spider Solitaire, Wild Eights house rules, seven looks, and the whole app in 13 languages.Wed, 28 Oct 2026 00:00:00 GMTbuildCapital Can Buy a Warehouse. It Cannot Buy Your WhatsApp Group.https://purvakalpa.studio/notes/capital-cannot-buy-your-whatsapp-group/https://purvakalpa.studio/notes/capital-cannot-buy-your-whatsapp-group/Why Indian startups beat global giants in some markets, lose in others, and are now forcing the giants to change.Fri, 16 Oct 2026 00:00:00 GMTessayMy research agent cited example.comhttps://purvakalpa.studio/notes/research-agent-egress/https://purvakalpa.studio/notes/research-agent-egress/Getting a small on-device model to actually do research, and a ledger that shows exactly what left the device.Thu, 10 Sep 2026 00:00:00 GMTbuildPawHub 1.4.0, now completely freehttps://purvakalpa.studio/notes/pawhub-1-4-0/https://purvakalpa.studio/notes/pawhub-1-4-0/The biggest redesign since launch, every feature unlocked, and an engineering hardening pass before shipping.Mon, 27 Jul 2026 00:00:00 GMTbuildI tried to search the web from my own app. It said no.https://purvakalpa.studio/notes/storyline-1-2-1/https://purvakalpa.studio/notes/storyline-1-2-1/Storyline 1.2.1: protected names are held back, the query is rewritten on device, and the research still comes back cited.Mon, 27 Jul 2026 00:00:00 GMTbuildA card night with zero gamblinghttps://purvakalpa.studio/notes/card-fever-launch/https://purvakalpa.studio/notes/card-fever-launch/Card Fever launched with ten games on one engine, no chips and no money: a test of how far one person can get when the architecture does the heavy lifting.Fri, 24 Jul 2026 00:00:00 GMTbuildFour apps, one belief: free exam prep for every studenthttps://purvakalpa.studio/notes/exam-apps-free/https://purvakalpa.studio/notes/exam-apps-free/Charaka NEET-UG, NEET-PG, NEET-MDS and Saras JEE are now completely free: no ads, no login, fully offline practice.Fri, 24 Jul 2026 00:00:00 GMTbuildI miss my father's voice, so I'm building it backhttps://purvakalpa.studio/notes/fathers-voice/https://purvakalpa.studio/notes/fathers-voice/Old home recordings break modern voice AI. So I started building a consent-first voice keepsake that runs entirely on a Mac.Wed, 08 Jul 2026 00:00:00 GMTpersonalYour own devices as a private AI clusterhttps://purvakalpa.studio/notes/private-ai-cluster/https://purvakalpa.studio/notes/private-ai-cluster/The most capable AI computer you own is probably asleep in the next room. Storyline's next bet is to use it.Tue, 07 Jul 2026 00:00:00 GMTbuildShow me: what happens to a sentence you write in Storylinehttps://purvakalpa.studio/notes/storyline-show-me/https://purvakalpa.studio/notes/storyline-show-me/No server, an Argon2id vault and a tamper-evident audit log you can verify yourself. The machinery behind provable privacy.Tue, 07 Jul 2026 00:00:00 GMTbuildTasker started with field teamshttps://purvakalpa.studio/notes/tasker-field-teams/https://purvakalpa.studio/notes/tasker-field-teams/From field service software to a private day planner that knows how much time and energy you actually have.Wed, 01 Jul 2026 00:00:00 GMTbuildI just made Tasker completely freehttps://purvakalpa.studio/notes/tasker-free/https://purvakalpa.studio/notes/tasker-free/Plan the day you actually have. Every feature unlocked, private by design, native on every Apple device.Tue, 30 Jun 2026 00:00:00 GMTbuildWhat if a chessboard had no edges?https://purvakalpa.studio/notes/mobius-chess/https://purvakalpa.studio/notes/mobius-chess/Endless mode puts chess on a Möbius strip. How the engine keeps check and checkmate correct across the twist.Thu, 25 Jun 2026 00:00:00 GMTbuildSoftware you shouldn't have to trusthttps://purvakalpa.studio/notes/software-you-shouldnt-have-to-trust/https://purvakalpa.studio/notes/software-you-shouldnt-have-to-trust/The Purvakalpa thesis: native Apple apps where the AI runs on your own devices and nothing leaves your iCloud. And an honest question.Sat, 20 Jun 2026 00:00:00 GMTessayFor Max. For Sky.https://purvakalpa.studio/notes/pawhub-open-beta/https://purvakalpa.studio/notes/pawhub-open-beta/A parrot that flew away, a puppy that got into cockroach chalk at midnight, and why PawHub, now CompAnimal, exists.Thu, 11 Jun 2026 00:00:00 GMTpersonalPromised versus provablehttps://purvakalpa.studio/notes/promised-versus-provable/https://purvakalpa.studio/notes/promised-versus-provable/Private AI is becoming a marketing phrase. For confidential work, privacy has to be something you can check, not something you are told.Tue, 09 Jun 2026 00:00:00 GMTessaySiri can call Google now. Where does confidential work go?https://purvakalpa.studio/notes/where-confidential-work-goes/https://purvakalpa.studio/notes/where-confidential-work-goes/If Apple sends its hardest questions to a partner cloud, "it runs on my device" is no longer a given. For some professionals, that is a dealbreaker.Tue, 09 Jun 2026 00:00:00 GMTessay