LedgerLocal: private on-device invoice reader for Indian freelancers, built on Gemma 4

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A developer has built LedgerLocal, a free open-source web app that extracts data from invoice photos, screenshots and PDFs for Indian freelancers and small businesses filing GST. The tool runs entirely on a laptop using Google's open-weight Gemma 4 model, so no bills are uploaded to external servers. Python validation checks then verify GSTIN format and check digits, confirm tax totals match, and flag values the model appears to have invented. Rows that fail any check are marked for review, and results can be corrected inline and exported as CSV. The developer plans to sell a one-click Mac version for about Rs. 999 to non-technical users, while the core code remains free under the MIT license.

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