OC Apps See the apps

4 apps · updated 18 Sep 2026

Working software, built in the open.

Every app here is a real product with a public story and a live demo you can ask into. Small businesses in India, real workflows, honest status.

Request demo accessBrowse the appsHow we build

One request, one PIN, one login: every demo opens. Already have a PIN? Unlock all demos here.

The apps

Each one has its own site with the full story and an honest feature matrix, and a live demo behind one shared gate. Request access once and open any of them.

Dairy

MilkPost

added 2026-09-04

A small dairy farm's daily command center: log milk in one tap, see forecasts per cow, in your language.

  • dairy
  • forecasting
  • Telugu
  • data platform
Runs on
  • phone
  • laptop
  • desktop
Memory
51 MB
OS
Linux, Windows, macOS, iOS, Android
More details
Memory
≈51 MB in use — peak measured over 75 hours of running; any machine with ~128 MB free is enough
Server OS
Linux (Ubuntu 22.04+), macOS 13+, Windows 10+ with Python 3.11+; or Docker
Disk
≈27 MB install + the database (a few hundred KB per farm-year)
CPU
1 CPU core, no GPU
Runs as
Python 3.12 · FastAPI · SQLite (one file)
Host
Any small Linux box, a laptop, or Docker (python:3.12-slim); also runs as the hosted twin
Use from
Any modern browser; phone-first for one-tap milk logging
builtlive
Open siteOpen demo →
Voice

VaaniMesh

added 2026-09-15

Speak your language, be heard in theirs: a live voice-translation mesh across five Indian-market languages.

  • voice
  • translation
  • mesh
  • Indian languages
Runs on
  • phone
  • laptop
  • desktop
Memory
210 MB
OS
Linux, macOS, Windows, iOS, Android
More details
Memory
≈210 MB in use — relay peak 157 MB + voice app 51 MB, measured over 25 hours; ~300 MB free is enough. Speech models run on Sarvam's cloud, not here
Server OS
Linux (Ubuntu 22.04+) or macOS 13+ with Python 3.11+; internet for the speech APIs
Disk
≈1.4 GB install (torch CPU wheels for the optional shared-mic beta); the mesh itself keeps no database
CPU
2 CPU cores, no GPU
Runs as
Python 3.11+ · pipecat relay · Sarvam speech APIs (cloud); optional speechbrain for the shared-mic beta
Host
A laptop, desktop or Linux box on the LAN runs the relay + pipeline; speakers join from their own devices
Use from
Chrome/Safari/Edge with a microphone (built-in or headset) over HTTPS; earphones recommended
builtunreachable at last check
Open siteOpen demo →
Procurement

Tallyard

added 2026-09-18

The purchasing desk that keeps the tally: vendors, purchase orders, goods receipts, and scorecards written by what actually arrived.

  • procurement
  • GST
  • vendor scorecards
  • assistant
Runs on
  • phone
  • laptop
  • desktop
Memory
59 MB
OS
Linux, Windows, macOS, iOS, Android
More details
Memory
≈59 MB in use — peak measured, unchanged after a 200-request burst; any machine with ~128 MB free is enough
Server OS
Linux (Ubuntu 22.04+), macOS 13+, Windows 10+ with Python 3.12
Disk
≈210 MB install (includes test tooling) + the database (≈140 KB for 40 orders)
CPU
1 CPU core, no GPU
Runs as
Python 3.12 · FastAPI · SQLite (one file); optional AI keys
Host
A plant PC or small cloud box under pm2; also runs as the hosted twin
Use from
Any modern browser; printable PO document; phone works for receiving
builtlive
Open siteOpen demo →
Education

Abhyas

added 2026-09-18

A coaching centre's practice desk: lessons, quizzes that adapt, flashcards that return before you forget, and a teacher's view of who is slipping.

  • education
  • adaptive learning
  • spaced repetition
  • tutor
Runs on
  • phone
  • laptop
  • desktop
Memory
59 MB
OS
Linux, Windows, macOS, iOS, Android
More details
Memory
≈59 MB in use — peak measured, unchanged after a 210-request burst including ten quiz generations; any machine with ~128 MB free is enough
Server OS
Linux (Ubuntu 22.04+), macOS 13+, Windows 10+ with Python 3.12
Disk
≈200 MB install (includes test tooling and the headless-browser driver) + the database (≈270 KB for 5 courses, 12 learners and a month of history)
CPU
1 CPU core, no GPU
Runs as
Python 3.12 · FastAPI · SQLite (one file); optional AI keys
Host
A centre's PC or a small cloud box under pm2; also runs as the hosted twin
Use from
Any modern browser; phone works for lessons, quizzes and flashcards
builtlive
Open siteOpen demo →

What's new

The newest verified steps from each app's build tracker. A step appears here only after its acceptance test has run.

MilkPost

  • G4.2Lactation-curve priors from breed benchmarks (gap #15)
  • G4.3Heat-detection rules model (gap #16)
  • G4.1Milk-price outlook from open market data (gap #14)

VaaniMesh

  • R3.2Regression gate re-recorded (gap #—)
  • R3.1All cockpits walk clean (gap #—)
  • R2.1Roster behavior tests (gap #4)

Tallyard

  • V7.8Email-first demo access: PIN hidden and rotated, request form issues PIN + temporary login by email, stateless guest credentials
  • V7.7Ship: seeded demo users, tests + walk green, twin redeployed with RESEND env, docs updated
  • V7.1Users table, PBKDF2 passwords, stateless signed sessions

Abhyas

  • L8.7Card on OC Apps: apps.json entry, mark, rewrite, measured runs-on, rebuilt and deployed
  • L8.6Registry, HOME.md, cockpit :6798 under pm2, memory updated
  • L7.3Email-first demo access on the twin: /demo/request issues the PIN and a 2-day guest login

How we build

Every app goes through the same three disciplines, so what you see on its site is what actually exists.

A plan with proof

Each build is tracked as a phasedoc: a task tree where every leaf carries a runnable acceptance test and is ticked only after that test has run. Progress reads below 100% while work is open, on purpose.

A public story

Each app ships with a betadoc: the problem, the product, the architecture, a roadmap, and a feature matrix generated from the build tracker, so the site cannot claim more than the tracker shows.

A demo you can drive

Every product runs live behind a gate on its own subdomain. You request access, receive a login by email, and use the real thing on synthetic data.

Want one of these for your business?

Each app is small enough to run on a plant PC or a small cloud box, and each is built for an Indian small business first: rupees, GST, local languages. Request a demo from any card and reply to the access email to start a conversation.