Kelvin Sous Vide
Precision Sous Vide Calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Your circulator is heating up. Get your exact time and temperature in under 10 seconds — grounded in real food science, not guesswork.
Stop guessing. Start cooking with absolute confidence.
Kelvin Sous Vide is the sous vide calculator built for home cooks who care about precision. Forget cross-referencing Baldwin tables, food-safety guides, and blog posts that all disagree with each other. Pick your protein, set your preferences, and get a scientifically grounded time and temperature result in under 10 seconds.
HOW IT WORKS
Kelvin uses real heat-transfer physics - Baldwin equations combined with pathogen pasteurisation D-values - to calculate a cook time specific to your exact cut, thickness, doneness level, and texture preference. It is not a static chart. It is a calculation engine that adapts to what you are actually cooking.
WHAT YOU CAN COOK
Choose from 7 protein categories with specific cuts:
Beef: Ribeye, NY Strip, Tenderloin, Chuck Roast, Short Rib, and more
Lamb
Poultry
Pork
Fish
Vegetables
Eggs
TWO AXES, TOTAL CONTROL
Most sous vide apps confuse temperature and time. Kelvin separates them cleanly:
Temperature controls doneness: Rare, Medium-Rare, Medium, Well
Time controls texture: Firm, Tender, Fall-apart
Adjust thickness with a thumb-friendly slider and Kelvin accounts for heat penetration to the center of your protein, not just the surface.
BUILT FOR THE KITCHEN COUNTER
Designed to be used with one hand, even with damp hands. Large tap targets, a dark interface that reduces glare near a hot stove, and zero loading screens in the calculator flow. All calculations are 100% offline and instant.
YOUR COOK HISTORY
Every calculation is automatically logged. See exactly what settings you used three weeks ago when that pork neck came out perfectly, and replicate it without guessing. Save your best cooks as named profiles for one-tap recall.
YOUR UNITS, YOUR WAY
Kelvin automatically detects your device locale and uses the right unit system - Celsius or Fahrenheit for temperature, millimetres or inches for thickness. Override either in Settings at any time.
WORKS ON EVERY CIRCULATOR
Anova, Joule, Inkbird, Sous Vide Supreme - it does not matter which one you have. Kelvin is completely hardware-agnostic. One app for every circulator you will ever own.
PRO VERSION - ONE-TIME PURCHASE
The free version includes all calculations, full cook history, and saved profiles, with banner ads in the browse and history screens. The calculator itself is always ad-free.
Upgrade to Kelvin Pro with a single one-time purchase to remove all ads permanently. No subscription. Ever.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Small bug fixes
- displaying of adds
- settings in tablet view
The developer, Martin Luknic, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martin Luknic
- Size
- 13.1 MB
- Category
- Food & Drink
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English and Slovak
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Kelvin Pro $3.99
- Copyright
- © Martin Luknic