Comparison

Kitchen Calculator PRO vs Cooking Ex Optimizer

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

Head to head
About

Kitchen Calculator PRO

Simplify cooking and measuring with this app that handles all your recipe conversions. Easily scale recipes up or down, convert ingredients between weight and volume, and manage your favorite ingredients.

Highlights
  • Scale recipes with fractions
  • Convert weight to volume
  • Convert volume to weight
  • Supports multiple units
  • Save custom ingredients
  • Standard cooking fractions
Features
Currently charting
Read full description

The Recipe Scaling & Ingredient Conversion Calculator Stop struggling with recipe math. Kitchen Calculator PRO helps home cooks and bakers quickly scale recipes, convert measurements, and accurately convert ingredients between cups, grams, ounces, tablespoons, and more. Whether you’re doubling a cake recipe, cutting a recipe in half, or converting flour from cups to grams, Kitchen Calculator PRO does the math for you. FEATURES • Scale recipes instantly using fractions • Convert ingredients between weight and volume measurements, including cups, grams, ounces, tablespoons, teaspoons, and more • Convert cups to grams and grams to cups using ingredient-specific conversion data • Save custom ingredients for even more accurate conversions • Convert volume, weight, temperature, and distance measurements • Enter amounts and view results using standard cooking fractions (1/2, 1/3, 3/4, etc.) RECIPE SCALING MADE EASY Quickly scale recipes up or down without reaching for a calculator. Whether you’re cooking for one person or feeding a crowd, Kitchen Calculator PRO makes doubling, halving, multiplying, and dividing recipe quantities fast and simple. INGREDIENT-BASED CONVERSIONS Not all ingredients weigh the same. A cup of flour weighs differently than a cup of sugar, rice, oats, or cocoa powder. Accurate conversions require knowing the ingredient being measured. Kitchen Calculator PRO includes a database of common ingredients and allows you to save your own ingredient data for even greater accuracy. BUILD YOUR OWN INGREDIENT LIBRARY Need precise conversions for your favorite brands or recipes? Save custom ingredient weights and densities, including values from nutrition labels. Kitchen Calculator PRO remembers your ingredients so future conversions are fast, accurate, and effortless. PERFECT FOR • Home cooks • Bakers • Recipe creators • Culinary students • Anyone working with US and metric recipes Make recipe math effortless with Kitchen Calculator PRO.

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.

Screenshots

Kitchen Calculator PRO4 screens
Cooking Ex Optimizer3 screens

Verdict

The call

The clearest difference is update cadence: Kitchen Calculator PRO at every 5 weeks against Cooking Ex Optimizer's every 9 months. Kitchen Calculator PRO also leads on chart position (#54 vs unranked). Cooking Ex Optimizer's advantage is price ($1.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement 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

Kitchen Calculator PRO costs $2.99 and Cooking Ex Optimizer $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kitchen Calculator PRO ships an update every 5 weeks, Cooking Ex Optimizer every 9 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 8 level
Kitchen Calculator PRO versus Cooking Ex Optimizer: the parameters behind the verdict, then further details
ParameterKitchen Calculator PROCooking Ex Optimizer
Price$2.99$1.99 — better
Rating4.2 (190 ratings) — better—
Positive reviews75.2% of reviews—
Number of ratings190 — better—
Update frequencyEvery 5 weeks — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#54 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size15 MB3 MB
Age rating4+4+
DeveloperJuan BaurinMorten Punnerud

Bugs and requests

Kitchen Calculator PRO

Reported bugs

7 issues
  • Crashes after opening on iOS 14
  • App closes immediately after opening on newer iOS
  • Does not work with iOS 14.2
  • Refuses to install on iPad Pro
  • Email support bounces back
Show 2 more
  • Website email address invalid
  • Rounding issues in some conversions

Requested features

15 requests
  • Allow switching ingredients without restarting
  • Add landscape mode support
  • Include Australian measurements
  • Include UK cup measurements
  • Include Irish measurements
Show 10 more
  • Add alphabet indexing for ingredients
  • Incorporate a kitchen timer
  • Add recipe scaling feature
  • Add more conversions (tons, knots, MPG)
  • Add metric cup measurements
  • Add 5 mL teaspoons and 250 mL cups
  • Allow conversion between AU/US/UK measurements
  • Add meat to ingredient list
  • Add Kosher Salt to database
  • Synchronize changes across devices

Cooking Ex Optimizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Kitchen Calculator PRO

No in-app purchases

None

Cooking Ex Optimizer

No in-app purchases

Questions

Is Kitchen Calculator PRO free?
Kitchen Calculator PRO costs $2.99, with no in-app purchases.
Is Cooking Ex Optimizer free?
Cooking Ex Optimizer costs $1.99, with no in-app purchases.
Do Kitchen Calculator PRO or Cooking Ex Optimizer have ads?
Neither Kitchen Calculator PRO nor Cooking Ex Optimizer shows ads.
Which is updated more often, Kitchen Calculator PRO or Cooking Ex Optimizer?
Kitchen Calculator PRO ships an update every 5 weeks, and Cooking Ex Optimizer every 9 months. Most recently, Kitchen Calculator PRO was updated on October 16, 2026 and Cooking Ex Optimizer on October 9, 2026.

Other comparisons