Tortio: cake calculator

Tortio is a cake recipe calculator built specifically for cake makers — amateur or pro. Open a recipe, change the diameter or target weight, and every ingredient rescales automatically.

Key features:

• THREE SCALE MODES — Sponge & cream scale by volume (d²×h), icing & syrup by area (d²), decor stays fixed. Mathematically correct, not just × ratio.

• MULTI-TIER CAKES — Each tier has its own size and ingredients. Perfect for weddings, anniversaries, big celebrations.

• PRESET SECTIONS — Sponge, cream, filling, coating, ganache, syrup, mousse, meringue, glaze, decor. Add your own custom types.

• SHOPPING LIST — One tap, all ingredients summed up. Take it to the store.

• PDF EXPORT & SHARE — Send a clean technological card to a colleague or print it out.

• COOK COUNTER — Track how many times you've baked each recipe.

• PHOTOS, RATINGS, TAGS, NOTES — Organize your recipe collection.

• OPTIONAL CLOUD BACKUP — Sync via your own Google Drive (private, only you can see it). Or stay 100% offline.

• FREE — All current features are free to use. No ads, no analytics, no tracking.

Privacy first: all your recipes live on your device. Cloud backup uses Google Drive's app-private folder — invisible even to other apps. We have no servers and never see your data.

Built by a confectioner-friendly developer for real kitchen use. Open source on GitHub.

In short: recipe rescaling, cake weight calculation, and a sponge calculator for bakers — all measured in grams.

Tortio is for you if:
- You need a cake calculator in grams: scale from 22 cm to 18 cm
- You bake tiered cakes and hate doing math twice
- You want a fast offline cake calculator, not yet another bloated recipe app
- You care about ingredient ratios, not generic "1 cup of X"

Open to feedback — write to roman.karpenk@gmail.com or open an issue on github.com/ShadowOfTime1/tortio.