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Umber v0.1.0

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@DeepakSilaych DeepakSilaych released this 27 Jul 20:59
· 10 commits to main since this release
v0.1.0
42d65a2

First public build of Umber — an offline expense tracker for Indian bank and UPI SMS.

Android 8.0+ · 12 MB · no INTERNET permission

Install

Download umber-0.1.0.apk below and open it. You'll need to allow installs from unknown sources.

On first launch, grant SMS access, then Settings → Import history → 1 year to populate the
ledger and give the classifier something to learn from.

Not on the Play Store, and won't be: READ_SMS is a restricted permission that Google's
permitted-use list doesn't cover for expense tracking.

What's in it

  • Reads bank and UPI SMS — live, plus 1 month / 3 months / 1 year of history
  • Statement import — .xlsx, CSV or TSV, no per-bank configuration
  • On-device categorisation — merchant memory → logistic regression over character n-grams →
    bundled lexicon of ~200 Indian merchants
  • Learns from corrections — one tap writes merchant memory, retro-labels that merchant's
    history and takes a gradient step
  • Cross-source dedupe — a statement overlapping months of SMS won't double anything
  • Reimbursement netting — pay a friend ₹1,000 and get it back, and you spent ₹0
  • Home-screen widget — rolling 24h / 7d / 30d spend
  • CSV export — plain numbers that sum in a spreadsheet

Privacy

The app ships without INTERNET. Not a policy — the permission isn't in the manifest, so it
cannot open a socket. Cloud backup is disabled too, since the database holds raw bank SMS.
No reverse geocoding (that would need network), so locations are coordinates only.

Known limitations

  • Merchant extraction is the weakest link; bank templates vary a lot. Settings → "Messages skipped"
    shows why anything was ignored — please open an issue with redacted examples.
  • Legacy .xls and PDF statements unsupported — export .xlsx or CSV instead.
  • Unminified, so stack traces in bug reports stay readable.

Verify

APK SHA-256      5e6e0972e52c46856f8e05dab43cb06f9d0d30a5f8f2e8d542a983894de58a40
Signing cert     e98c1305c140dd954ccce7d4b7efe207436c87c29c94475aa7d1859bbb587773

133 unit tests pass. See ARCHITECTURE.md for how it works.

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