Comparison

convrt vs CalcKX

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

Head to head
About

convrt

Features
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After selecting a category and an associated unit an input value has to be provided. Once input has been provided and the β€œConvert" button has been clicked, the keyboard will be dismissed, and the conversion results will be listed in a table underneath the input field. The selected category and unit will appear as the button title. Checks will be executed the validate the input provided. An error message will be displayed if invalid input is entered. All categories can deal with decimal input including decimal places. Exceptions are the categories 'Numeral' and 'Data'. These categories don't allow decimal places. For the 'Numeral' category input depends on the selected unit; binary only allows 0 and 1, octal only allows for 0..7, decimal only allows for 0..9 and hexadecimal allows for 0..9 and A..F. The categories Circle, Data and Temperature have an option β€œTable" in the Unit list. When selected the app will list formulas used to execute the conversions (for Circle and Temperature) and a table with all data storage units and how they relate to each other (for Data). Tables will be listed without the need to provide Input or pressing the Convert button. More detailed Help information is provided on the Help screen in the app. In settings you can set number of decimal places for each of the category's unit conversion results and if you want to use grouping separators. Also you have the option to change the color of the buttons on the main screen.

About

CalcKX

Features
Read full description

FREE - NO ADVERTISING An easy to use basic calculator for iPhone and iPad with separate display area for calculations. Special gimmick: have fun while looking for Easter Eggs!

Screenshots

convrt1 screens
CalcKX2 screens

Verdict

The call

The clearest difference is update cadence: CalcKX at every 4 days against convrt's every 25 months. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

convrt ships an update every 25 months, CalcKX every 4 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

Scorecard1 real difference Β· 5 level
convrt versus CalcKX: the parameters behind the verdict, then further details
ParameterconvrtCalcKX
PriceFreeFree
Update frequencyEvery 25 monthsEvery 4 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.1 β€” better
Further details β€” not scored
Size3 MB1 MB
Age rating4+4+
DeveloperHerbert JonkmanMartin Kowollik

In-app purchases

None

convrt

No in-app purchases

None

CalcKX

No in-app purchases

Questions

Is convrt free?
convrt is free to download, with no in-app purchases.
Is CalcKX free?
CalcKX is free to download, with no in-app purchases.
Do convrt or CalcKX have ads?
Neither convrt nor CalcKX shows ads.
Which is updated more often, convrt or CalcKX?
convrt ships an update every 25 months, and CalcKX every 4 days. Most recently, convrt was updated on October 2, 2026 and CalcKX on October 1, 2026.

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