# Clockwise vs SLS Exercises

The clearest difference is price: Clockwise at Free against SLS Exercises's $4.99. Clockwise also leads on update cadence (every 6 weeks vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Clockwise is free to download; SLS Exercises costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Clockwise ships an update every 6 weeks, SLS Exercises every 6 months. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Clockwise | SLS Exercises |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/clockwise-time-zone-tracker/id6470056395/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 35 MB | 3 MB |
| Requires iOS | 16.1 | **16** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Brittany Petrova](https://appshunter.io/developer/1712922919) | [Altug Basaran](https://appshunter.io/developer/1679429133) |

## What reviewers say

### Clockwise

[App page](https://appshunter.io/ios/app/clockwise-time-zone-tracker/id6470056395)

Easily track time zones for friends, family, and colleagues worldwide. Features dynamic backgrounds, personalized photos, and home-screen widgets for at-a-glance updates. Supports over 200k locations, even offline, and syncs across devices via iCloud.

**Highlights:** Automatic time zone detection, Time scrubbing for planning, Dynamic sky backgrounds, Personalized contact photos, Home-screen widgets, Daylight Saving Time alerts, Offline location database

**In-app purchases:** none


### SLS Exercises

[App page](https://appshunter.io/ios/app/sls-exercises/id6740192619)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Clockwise free?

Clockwise is free to download, with no in-app purchases.

### Is SLS Exercises free?

SLS Exercises costs $4.99, with no in-app purchases.

### Do Clockwise or SLS Exercises have ads?

Neither Clockwise nor SLS Exercises shows ads.

### Which is updated more often, Clockwise or SLS Exercises?

Clockwise ships an update every 6 weeks, and SLS Exercises every 6 months. Most recently, Clockwise was updated on October 8, 2026 and SLS Exercises on September 29, 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.*