Comparison

allTimeCalc vs Smart Unit Conversion

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

Head to head
About

allTimeCalc

Features
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This is an App with everything about Time. Make calculations with hours, minutes and seconds, and convert the results obtained to different units of time. Want to know how much time passed between two chosen dates? With allTimeCalc it's easy. Just enter the dates you want... Add or subtract a year, a month, or any other unit of time, and get the end date and corresponding day of the week. With allTimeCalc you can have two timers working at the same time, and save your most used timers. Using allTimeCalc, always know how long it takes to reach your favorite destinations, whether you're walking, driving or taking the bus. Accessing the Time Calc tab, you can perform basic operations with hours, minutes and seconds, or convert, for example, 5000 seconds to hours or minutes, simply by entering the time you want to convert and pressing the Convert key. On the Date Calc tab you can set a start date and time and an end date and time, and know how many days pass between those dates. By pressing the More Results button, you have the corresponding time in Years, Months, Weeks, Days, Hours, Minutes and Seconds. The Day Calc tab allows you to add a time unit to a chosen date and time, obtaining an end date and the corresponding day of the week. As previously mentioned, the Timer tab allows the use of two timers at the same time. You can save your favorite timers for later use. When a timer runs out, you receive a ringtone and notification on your device. If you're using an Apple Watch, the notification will appear on it. In the ETA tab you have the estimated times of arrival to your favorite destinations, and previously chosen. Simply enter an address, or tap the screen at the chosen location, set a preferred mode of transport, and name the location. So you always know how long it takes to get to your destination, what time you'll get there, and how far away. The app allows you to directly access Maps and see the itinerary for the chosen destination.

About

Smart Unit Conversion

Features
Read full description

This is a smart unit convertor that: 1. Support 21 languages and the Local Units 2. You can Customize the Sequence of Units 3. European number format supported Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

allTimeCalc4 screens
Smart Unit Conversion4 screens

Verdict

The call

The clearest difference is price: Smart Unit Conversion at Free against allTimeCalc's $2.99. Smart Unit Conversion also leads on iOS requirement (13.4 vs 26.0). allTimeCalc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Smart Unit Conversion is free to download; allTimeCalc costs $2.99 up front. Smart Unit Conversion sells 1 in-app purchase, starting at $1.99 per year. allTimeCalc asks for nothing beyond the download.

UpkeepUpdate frequency

allTimeCalc ships an update every 21 months, Smart Unit Conversion every 15 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

Scorecard4 real differences ยท 2 level
allTimeCalc versus Smart Unit Conversion: the parameters behind the verdict, then further details
ParameterallTimeCalcSmart Unit Conversion
Price$2.99Free โ€” better
Update frequencyEvery 21 monthsEvery 15 months โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS26.013.4 โ€” better
Further details โ€” not scored
Size6 MB41 MB
Age rating4+17+
DeveloperPaulo CorreiaYui Lau

In-app purchases

None

allTimeCalc

No in-app purchases

1 purchases

Smart Unit Conversion

Subscriptions1
  • 1 Year$1.991 Year

Questions

Is allTimeCalc free?
allTimeCalc costs $2.99, with no in-app purchases.
Is Smart Unit Conversion free?
Smart Unit Conversion is free to download, with in-app purchases available.
Do allTimeCalc or Smart Unit Conversion have ads?
Smart Unit Conversion shows ads; allTimeCalc does not.
Which is updated more often, allTimeCalc or Smart Unit Conversion?
allTimeCalc ships an update every 21 months, and Smart Unit Conversion every 15 months. Most recently, allTimeCalc was updated on October 4, 2026 and Smart Unit Conversion on October 8, 2026.

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