Comparison

Cooking Ex Optimizer vs Underbelly Sous Vide Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cooking Ex Optimizer

Features
Read full description

Cooking Ex Optimizer is a kitchen companion built around live temperature prediction. Track every temperature at once - your steak, your oven, your sous vide bath - and the app projects when each one will reach its target. No more guessing. Tap Set to log a temperature. Tap Finish to lock in a target. Watch the countdown adjust as new readings come in. The chart shows your readings and the projected curve, with a green indicator that moves along the projection so you always know where things stand right now. Multiple tracks side by side Each track has its own name, target, and timeline. A summary strip under the page selector shows live readings and countdowns for every track at once - even when you are focused on a different one - so you can keep tabs on everything from a single screen. Tap a pill to switch. Smart projection The app fits a curve through your readings and extrapolates. The countdown ticks down in real time as new data refines the model. Once a target is reached, the display flips to a checkmark and counts time since reached. Hands-on chart Drag across the chart to inspect any time and temperature. Pinch to zoom the time axis. Tap a reading to edit it. Use plus to extend the forecast window further into the future, minus to bring the last reading back to the center. Camera capture Point your camera at a thermometer or oven display and the app reads the digits using the device on-board OCR, then logs them automatically. Beyond cooking Cooking Ex Optimizer keeps the original Experiment Optimizer toolkit. Define variables (binary or value range), get adaptive suggestions for the next experiment to run, record outcomes, and review live model confidence with clear explanations of the likely formulas behind your data. Export and import everything as JSON for collaboration. Built for cooks, researchers, and tinkerers who want one app for measurement, prediction, and learning. Works offline. No accounts. No tracking. No subscriptions.

About

Underbelly Sous Vide Calc

This app calculates safe pasteurization times and cooking durations for various foods using sophisticated scientific models. It supports cooking directly from frozen and is designed for culinary professionals and advanced home cooks.

Highlights
  • Calculates safe pasteurization times
  • Handles cooking from frozen
  • Uses sophisticated math models
  • Food-specific parameters
  • Based on published science
Features
Currently charting
Read full description

The Underbelly Sous Vide Calculator trusts you to know your target cooking temperature, and tells you how to get there. It calculates safe pasteurization times. It handles cooking directly from frozen. It uses sophisticated math models, with parameters specific to each individual food type—all based on the best published science. Perfect for chefs, advanced home cooks, culinary professors and students, cookbook authors. If you miss the long-gone Sous Vide Dash and Toolbox apps, you'll love the Underbelly Calculator.

Screenshots

Cooking Ex Optimizer3 screens
Underbelly Sous Vide Calc4 screens

Verdict

The call

The clearest difference is update cadence: Underbelly Sous Vide Calc at every 5 days against Cooking Ex Optimizer's every 9 months. Underbelly Sous Vide Calc also leads on chart position (#44 vs unranked). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Cooking Ex Optimizer costs $1.99 and Underbelly Sous Vide Calc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Cooking Ex Optimizer ships an update every 9 months, Underbelly Sous Vide Calc every 5 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Cooking Ex Optimizer versus Underbelly Sous Vide Calc: the parameters behind the verdict, then further details
ParameterCooking Ex OptimizerUnderbelly Sous Vide Calc
Price$1.99$1.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#44 — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size3 MB31 MB
Age rating4+4+
DeveloperMorten PunnerudPAUL JOEL RAPHAELSON

In-app purchases

None

Cooking Ex Optimizer

No in-app purchases

None

Underbelly Sous Vide Calc

No in-app purchases

Questions

Is Cooking Ex Optimizer free?
Cooking Ex Optimizer costs $1.99, with no in-app purchases.
Is Underbelly Sous Vide Calc free?
Underbelly Sous Vide Calc costs $1.99, with no in-app purchases.
Do Cooking Ex Optimizer or Underbelly Sous Vide Calc have ads?
Neither Cooking Ex Optimizer nor Underbelly Sous Vide Calc shows ads.
Which is updated more often, Cooking Ex Optimizer or Underbelly Sous Vide Calc?
Cooking Ex Optimizer ships an update every 9 months, and Underbelly Sous Vide Calc every 5 days. Most recently, Cooking Ex Optimizer was updated on October 24, 2026 and Underbelly Sous Vide Calc on October 31, 2026.

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