Change your elevation and you change the boiling point — and the cooking time. AltiCook tells you what's right where you are.

Features

• The real boiling point where you are

  Set your elevation once and AltiCook shows the temperature water actually boils at, in °F or °C. Pull it automatically from your location or type it in. Above sea level water boils below 212°F, which is why the recipe never quite works.

• Cook-time adjustments, food by food

  Eggs, pasta, rice, dried beans, potatoes and slow-simmered meats. For the foods that altitude hits hardest, you get a concrete number for how much longer to cook — not a vague rule of thumb.

• Baking cheat sheet

  See at a glance how to adjust flour, sugar, liquid, leavening and oven temperature as you climb. It's the difference between a cake that collapses or dries out at 7,000 feet and one that comes out right.

• Widget and favorites

  Save your home elevation and the foods you cook most, and the answer is one tap away. Add the widget and your elevation and boiling point stay on your Home Screen.

• Fully offline, one-time purchase

  Every calculation runs on your device. No account, no connection, no sign-up. It works the same in a mountain cabin with no signal. And it's a one-time purchase, not a subscription.

• See the math behind it

  Tap the f(x) button to see why boiling point drops with altitude (lower pressure means water boils at a lower temperature), plus a 9-step reference table from 0 to 5000m with your location highlighted. Built on the ISA pressure-altitude formula and the Antoine equation, matching published values within 0.08°C — though real air pressure shifts with weather, so treat it as a close estimate.

Screenshots