River Apps · iPhone · Free

Scale a complete recipe without doing kitchen math.

Change the serving count, keep exact fractions, convert compatible units, and share the result from one offline-first workspace.

What it does

One ratio across the whole recipe.

Enter the original and target servings to calculate one clear ratio.

Use decimals, fractions, or mixed numbers for ingredient amounts.

Convert supported volume, weight, and temperature units when useful.

Keep recipes locally and share the currently displayed result through iOS.

Private and offline-first

All current features are free. Recipe and settings data stay on the device unless you explicitly use an iOS share action.