# Sleep Time Calculator vs Time Calculator ×

The clearest difference is rating: Time Calculator × at 4.7 against Sleep Time Calculator's 3.8. Time Calculator × also leads on ratings volume (288 vs 23). Sleep Time Calculator's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.

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

Time Calculator × holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Time Calculator × has 288 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 70% of Sleep Time Calculator's written reviews are positive against 73% of Time Calculator ×'s.

Sleep Time Calculator ships an update every 3 months, Time Calculator × every 6 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | Sleep Time Calculator | Time Calculator × |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (23 ratings)](https://appshunter.io/ios/app/sleep-time-calculator/id606077861/reviews) | **[4.7 (288 ratings)](https://appshunter.io/ios/app/time-calculator/id1438423896/reviews)** |
| Number of ratings | 23 | **288** |
| Positive reviews | 69.7% of reviews | **73.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 55 MB | 28 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Recked Software LLC](https://appshunter.io/developer/606077864) | [DOUBLE U s.r.o.](https://appshunter.io/developer/331787042) |

## What reviewers say

### Sleep Time Calculator

[App page](https://appshunter.io/ios/app/sleep-time-calculator/id606077861)

This free utility helps you determine optimal wake-up times based on sleep cycles. It aims to reduce grogginess by recommending times to rise at the end of a sleep cycle, promoting a more alert feeling.

**Highlights:** Optimal wake-up time recommendations, Sleep cycle analysis, Reduces grogginess, Promotes alertness, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Calculator ×

[App page](https://appshunter.io/ios/app/time-calculator/id1438423896)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $4.99 | per year |
| Remove Ads | $6.99 | one-time |
| Remove Ads | $9.99 | one-time |
| Remove Ads | $19.99 | one-time |

**What reviewers like**

- 👍 Simplifies time math
- 👍 Accurate and easy to use
- 👍 Great for work tool
- 👍 Invaluable for timing media
- 👍 Eliminates guesswork

**What reviewers complain about**

-  anúncios Unbearable ads recently
-  anúncios Too many ads
-  anúncios Ads are super annoying
-  anúncios Ads are a big problem
-  anúncios Ads make app unusable

**Reported bugs**

- 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**

- Make it pure hours and minutes, not days
- Option to disable 'DAYS' format


## Frequently asked questions

### Is Sleep Time Calculator free?

Sleep Time Calculator is free to download, with no in-app purchases.

### Is Time Calculator × free?

Time Calculator × is free to download, with in-app purchases available.

### Which has better reviews, Sleep Time Calculator or Time Calculator ×?

Time Calculator × is rated higher. Sleep Time Calculator averages 3.8 out of 5 from 23 ratings, while Time Calculator × averages 4.7 from 288 ratings.

### Do Sleep Time Calculator or Time Calculator × have ads?

Time Calculator × shows ads; Sleep Time Calculator does not.

### Which is updated more often, Sleep Time Calculator or Time Calculator ×?

Sleep Time Calculator ships an update every 3 months, and Time Calculator × every 6 months. Most recently, Sleep Time Calculator was updated on October 23, 2026 and Time Calculator × on October 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*