Comparison

Time Calculator × vs SFT Smart Tire

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

Head to head
About

Time Calculator ×

Effortlessly perform calculations with time values like addition, subtraction, multiplication, and division. Supports various time formats including days, hours, minutes, and seconds. Features a user-friendly interface for simple and functional time arithmetic.

Highlights
  • Time addition and subtraction
  • Time multiplication and division
  • Support for days, hours, minutes, seconds
  • Flexible time format input/display
  • User-friendly interface
Features
Read full description

Introducing the upgraded Time Calculator app – your ultimate tool for seamless time-based calculations! Time Arithmetic Made Easy: Perform mathematical operations with time values like addition, subtraction, multiplication, division and more. No more struggling with complex time conversions – let our app handle the math for you. Flexible Time Formats: Input and display time values in various formats, including days, hours, minutes, and seconds. Customize the format that suits your preference or matches your specific needs. User-Friendly Interface: Designed for both simplicity and functionality, modelled after the native iPhone calculator, our app ensures a smooth user experience, regardless of your familiarity with time-based calculations. You can perform calculations such as: 1h 45m + 3h 20m 2h 38m x 2 8h - 1h 11m 14h ÷ 4 Terms of Use: https://doubleuapp.com/privacy/terms.html

About

SFT Smart Tire

Features
Read full description

Smart Tire An intelligent tire monitoring app that helps you stay informed about your tire pressure and temperature in real time. Smart Tire connects via Bluetooth to your tire pressure sensors, continuously tracking data for each tire. It automatically alerts you when abnormalities occur, ensuring safer driving. Main Features: • Real-time monitoring of tire pressure and temperature • Instant alerts for abnormal conditions • Manage multiple tire sensors • Historical data tracking and trend analysis • Simple Bluetooth connection, easy to use

Screenshots

Time Calculator ×4 screens
SFT Smart Tire3 screens

Verdict

The call

The clearest difference is in-app purchases: SFT Smart Tire at none against Time Calculator ×'s 4. SFT Smart Tire also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 6 months). On price 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

Both are free to download. Time Calculator × sells 4 in-app purchases, starting at $4.99 per year. SFT Smart Tire asks for nothing beyond the download.

UpkeepUpdate frequency

Time Calculator × ships an update every 6 months, SFT Smart Tire every 3 weeks. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Time Calculator × versus SFT Smart Tire: the parameters behind the verdict, then further details
ParameterTime Calculator ×SFT Smart Tire
PriceFreeFree
Rating4.7 (287 ratings) — better—
Positive reviews73.1% of reviews—
Number of ratings287 — better—
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size28 MB39 MB
Age rating4+4+
DeveloperDOUBLE U s.r.o.北京开客帮科技有限公司

Bugs and requests

Time Calculator ×

Reported bugs

4 issues
  • Paid subscription, but ads still appear
  • App defaults to D-H-M format, which is not preferred
  • Calculation error: 3:64 should be 4:04
  • Subtraction calculation error: 12:15pm from 6:45pm gives wrong answer

Requested features

2 requests
  • Make it pure hours and minutes, not days
  • Option to disable 'DAYS' format

SFT Smart Tire

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Time Calculator ×

Subscriptions1
  • Premium Yearly$4.991 Year
One-time3
  • Remove Ads$6.99
  • Remove Ads$9.99
  • Remove Ads$19.99
None

SFT Smart Tire

No in-app purchases

Questions

Is Time Calculator × free?
Time Calculator × is free to download, with in-app purchases available.
Is SFT Smart Tire free?
SFT Smart Tire is free to download, with no in-app purchases.
Do Time Calculator × or SFT Smart Tire have ads?
Time Calculator × shows ads; SFT Smart Tire does not.
Which is updated more often, Time Calculator × or SFT Smart Tire?
Time Calculator × ships an update every 6 months, and SFT Smart Tire every 3 weeks. Most recently, Time Calculator × was updated on November 2, 2026 and SFT Smart Tire on October 24, 2026.

Other comparisons