# Ritwik Finance Tech Blog

> How Ritwik Finance builds Ritwik One, the super app our field staff and Accounts team use every day: real problems, real numbers, and the engineering behind them. Each post is written by the engineer who built the system it describes, with real numbers from production.

Ritwik Finance Enterprises Private Limited is a finance company with its corporate office in Jaipur, Rajasthan. Ritwik One is its staff super app: Travel (field trips, GPS tracking, customer visits and travel claims) and Finance (vendors, bills and vendor payments), with HR and Sales modules on the way. It runs as a web app and as an Android app on Google Cloud in Mumbai.

## Posts

- [AI as evidence, not judge: reading bills and odometer photos](https://blogs.ritwikfinance.com/ai-as-evidence-bills-odometers/index.html.md): Staff type numbers off paper bills and odometer dials all day, and typed numbers drift. How Ritwik One uses OCR with a rules-based parser for bills and a Gemini vision model for odometers, both in Mumbai, both nothing-kept, and neither allowed to decide anything. (Nikhil Kumar, 14 November 2026)
- [Offline-first GPS for travel claims: how Ritwik One records trips](https://blogs.ritwikfinance.com/offline-first-gps-travel-claims/index.html.md): A 22 km trip was paid as 18.9 km because the phone stopped recording for 150 minutes. How Ritwik One Travel now spools GPS points on the phone, uploads them in batches that are safe to repeat, and measures the stretches the phone still missed. (Nikhil Kumar, 14 November 2026)
- [One app for the field: building Ritwik One as a super app](https://blogs.ritwikfinance.com/ritwik-one-super-app/index.html.md): Field staff need trips, travel claims, bills and approvals, with HR and sales on the way. How we built Ritwik One as a thin Android shell over one web app, with a typed bridge, native background GPS, and a release pipeline that ships the exact image we tested. (Nikhil Kumar, 14 November 2026)
- [Paying vendors safely: tax checks when the money moves](https://blogs.ritwikfinance.com/vendor-tax-checks-at-payment/index.html.md): Most companies check a vendor once, on the day it is added. Ritwik One Finance checks the GST registration again before every payment, never lets a failed check count as a pass, and verifies the PAN–Aadhaar link while keeping only four digits. (Nikhil Kumar, 14 November 2026)

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