iPhone Screenshots


Free yourself from recipes! The best-selling cookbook, Ratio: The Simple Codes Behind the Craft of Everyday Cooking, by me, Michael Ruhlman, is now an iPhone app that will help you calculate amounts of ingredients in all the fundamental culinary preparations. When you know a ratio, you don’t know a recipe, you know 1,000. And this application does all the calculating for you.

“Cooking, like so many other creative endeavors is defined by relationships. For instance, knowing exactly how much flour to put into a loaf of bread isn’t nearly as useful as understanding the relationship between the flour and the water, or fat, or salt. That relationship is defined by a ‘ratio’ and having a ratio in hand is like having a secret decoder ring that frees you from the tyranny of recipes. ….Michael Ruhlman, in handing us mortals a power better suited to the gods, has changed the balance of kitchen power forever.” —Good Eats host Alton Brown

What You Get:

--THE 32 CRITICAL RATIOS that form the backbone of the culinary arts, with instructions: doughs, batters, meat preparations, custards, sauces (pasta dough and pizza dough, sponge cake and pancakes, fritters and crepes, stocks and sauces, crème caramel and chocolate sauce.

--A CALCULATOR that figures out how much of each ingredient you need, no matter how many or how few people you want to serve.

--An OUNCES-TO-GRAMS CONVERTER (ratios work no matter what unit you choose to use!).

--DELICIOUS VARIATIONS FOR RECIPES on all the ratios, ideas for the creation of new dishes according to your tastes.

--An easy way to STORE YOUR OWN RECIPES and notes that you’ve created from the basic ratios.

--Quick fun ways to SHARE what your cooking with your fellow cooks, on Facebook and on Twitter.

--Ratios is also a great way to understand and TWEAK YOUR OWN RECIPES, to help you make your pancakes even fluffier, your pizza dough crisper, your crème brulee richer.

What's New

Version 2.0.7

Bug fixes for iOS 10

Ratings and Reviews

Loved the book


Nice app that has the book published ratios. Very convenient

Excellent content; Tech is lacking


This is a great app for improvising cooks and those who just want the basic foundation to build one's own recipes on. Plus they finally fixed the discrepancies between the description here, the in-app introduction, and the blurbs for the actual book.

The underlying tech could use some improvement. The primary applications seem to work well: it's a ratio app and it needs to do math and it does. Some extras are a bit off. They finally got around to the iPhone 5 screen, but in early 2014, it really should be fully iPad compatible. The iPad is much better suited for a cooking companion than the iPhone (yes, these are simple formulas that will ultimately be committed to memory, but not immediately), and now that the mini is available there’s a clear middle ground between iPhone and full-sized iPad that should be supported.

The transparent navigation tabs and (to a lesser extent) title bar are a mistake. When text is behind them, the tabs are rendered unreadable. This cannot be intentional as no one would have done this on purpose.

Retina graphics would be nice, too.

Create fully iPad-compatible app and this will be a five-star app. The content is beyond reproach. Ruhlman Enterprises should bring the app up to its level.

Almost awesome cooking app!!


Love the concept and the pie chart presentation of ingredient proportions. Totally suits my style of cooking, which is to take a recipe and improvise from it. This allows for that so easily: to subsitute one fat for another fat, etc.

Unfortunately, I'm used to measuring ingredients by standard American measuring cups, and seeing ".2 cups" of this to ".8 cups" of that isn't very useful. I know weighing ingredients, especially for baking, is better... but I'm not quite there yet. In any case, I'd say better to eliminate the "cups" unit option than to have decimal equivalents that don't translate quickly to standard fractional measuring cup sizes.


ruhlman enterprises inc
7.3 MB
Food & Drink
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Ruhlman Enterprises, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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