DRAFT — requires [MAT]/legal review before public launch.
This is a plain-English description of what GitCalc actually stores and does with your data. It is not a substitute for legal advice — see the banner above.
What we store
- Your account: email address and a display name, via Supabase Auth.
- Your uploaded workbooks, verbatim. When you upload a version of a calc, we store the exact bytes of the .xlsx/.xlsm file you gave us, unmodified, plus a parsed copy we generate for display in the app (so we can show cells, formulas, and diffs without re-opening the original file). We never execute, recalculate, or rebuild your spreadsheet — see our permanent design principle: store bytes, serve verbatim.
- Diffs between versions. When you compare two versions, we compute and cache which cells/ranges/rules changed (a classification of “signal” vs “noise”), so repeat views don't recompute the same comparison.
- Comments and sign-offs you or your collaborators leave on a version, if your plan includes that feature.
- Metadata about all of the above: filenames, upload times, content hashes (SHA-256, used to prove your download is byte-identical to what you uploaded), and file sizes.
Where it lives
GitCalc runs on Supabase, hosted in the Singapore region, for both the database and file storage. We do not currently offer a choice of region.
What we don't do
- We never sell your data — to advertisers, data brokers, or anyone else.
- We never use the content of your calcs to train models or for any purpose other than providing GitCalc's features to you.
- We never edit, execute, or rebuild your spreadsheet files — GitCalc is a version-control and diffing layer around Excel, not a spreadsheet engine.
Who can see your data
Access to your calcs and versions is scoped to your account (enforced at the database level, not just in the app UI). If GitCalc later adds team/shared workspaces, access will be explicitly scoped to the people you invite — this policy will be updated before that ships.
Cookies
GitCalc uses cookies only for authentication — to keep you signed in between visits. We do not use tracking, advertising, or analytics cookies.
Deleting your data
You can export everything GitCalc has for your account at any time, and permanently delete your account and all of its data yourself, self-serve, from Settings. Deleting your account removes your uploaded files, version records, and sign-in identity permanently — this cannot be undone, so the Settings page lets you export first.
Questions
Contact 177616452+mathmati@users.noreply.github.com with any privacy questions or requests.