KitchenMetrics
Kitchen calculators for chefs
Free · Designed for iPad. Not verified for macOS.
KitchenMetrics answers the questions a professional kitchen actually asks — how long to cook something safely, how long to freeze it, when to throw the frying oil away, what a dish really costs, which fat to use — and for every answer it shows where the number came from.
Including the numbers that came from nowhere. A legal limit names its article. A figure from published work names the paper, the page and the equation. And a value with no source behind it — an appliance constant, a load factor — says so, and carries an uncertainty band instead of being printed as though someone had measured it.
TEN TOOLS, ALL OFFLINE
FOOD COST — both yields that matter: butchering (AP to EP) and cooking loss (EP to plated), so the quantity you buy is the quantity you cost. Energy, labour, utilities and overhead give a true cost per cover. Aligned to the Uniform System of Accounts for Restaurants: Food Cost % and Prime Cost % against net revenue, full-absorption or classic pricing, net and VAT-inclusive.
RECIPES AND MENU COSTING — an ingredient library with sub-recipes, and repricing across every dish when a supplier price moves.
FRYER ANALYZER — total polar compounds are the share of a frying fat that is no longer intact triglyceride. The app estimates them from time and temperature, compares them with your own country's figure, and tells you whether that figure is LAW or a RECOMMENDATION. Twelve countries, each with the instrument named: 25% is statutory in Spain (BOE-A-1989-2265) and Argentina, 27% in Switzerland (ODOV art. 6). Where no statute was found the app shows the prudent figure rather than a blank, and marks the row when no primary text was opened. Australia and New Zealand were settled by reading the Food Standards Code itself: it does not mention polar compounds anywhere.
HEAT TRANSFER CALCULATOR — ramp and hold times from the Choi-Okos thermophysical model and Bigelow kinetics, 1108 food profiles, with the Biot and Fourier numbers shown so the working is legible.
FREEZING TIME CALCULATOR — Pham's method, with the geometric factor its own author recommended to us by email rather than a handbook's copy of it. The panel states its accuracy as the method's author states it, about ±20%, and says plainly where the shape factor is weakest.
LIPID DATABASE — 148 fats and oils: smoke point, safe working temperature, crystallisation behaviour, density, fatty-acid profile, oxidation risk.
COMPLIANCE LOG — record measured values against a lot, a delivery note and a date. A record book, not a verdict.
CLIENT VAULT — separate workspaces, PIN-locked, on your device only.
SCREEN RULER — a DPI-calibrated ruler in centimetres and inches.
SOURCES AND MANUAL — every document the app leans on, with how far we actually got with it: read at first hand, only partly seen, or never obtained. Where the law is silent, the app says so instead of inventing a rule. Where we are waiting for an answer, it says that too.
PRIVACY
Everything stays on your device. No account, no analytics, no advertising, no tracking. The app makes no network requests of any kind: there is no server behind it and no address for it to reach, so there is nowhere for what you type to go. It works in aeroplane mode, which is the simplest way to check that claim yourself.
KitchenMetrics is an estimation tool. Always verify critical food-safety parameters against your own HACCP plan and local regulations.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
1.9.6 - plane-sections freezing for hollow carcasses. A whole chicken or turkey in the Freezing panel can now get a real time band from our plane-sections method with an asymmetric wall model, instead of geometry only - our own estimate, not a validated model. Also: PDF export from Food Cost, Heat Transfer, Deep Frying and Freezing. Cooking weight loss follows official USDA yields. Fryer: breaded/protein food load is now factored into the oil-degradation estimate. Plus stability fixes.
The developer, Andrea Petrucci, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Andrea Petrucci
- Size
- 6.9 MB
- Category
- Food & Drink
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Andrea Petrucci