# Clocktower Time Tracker vs Calume

The clearest difference is update cadence: Clocktower Time Tracker at every 2 days against Calume's fortnightly. Clocktower Time Tracker also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Clocktower Time Tracker sells 3 in-app purchases, starting at $2.99 per month and Calume sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Clocktower Time Tracker ships an update every 2 days, Calume fortnightly. The most recent releases landed on September 14, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Clocktower Time Tracker | Calume |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 22 MB | 23 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lauri Kieksi](https://appshunter.io/developer/1829298529) | [DANIEL HAVLAS](https://appshunter.io/developer/1889645064) |

## What reviewers say

### Clocktower Time Tracker

[App page](https://appshunter.io/ios/app/clocktower-time-tracker/id6759680223)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clocktower Pro Monthly | $2.99 | per month |
| Clocktower Pro Annual | $19.99 | per year |
| Clocktower Pro (Lifetime) | $49.99 | one-time |


### Calume

[App page](https://appshunter.io/ios/app/calume-time-tracker/id6776441027)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chronicle Pro Monthly | $8.99 | per month |
| Chronicle Pro Yearly | $19.99 | per year |
| Chronicle Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is Clocktower Time Tracker free?

Clocktower Time Tracker is free to download, with in-app purchases available.

### Is Calume free?

Calume is free to download, with in-app purchases available.

### Do Clocktower Time Tracker or Calume have ads?

Neither Clocktower Time Tracker nor Calume shows ads.

### Which is updated more often, Clocktower Time Tracker or Calume?

Clocktower Time Tracker ships an update every 2 days, and Calume fortnightly. Most recently, Clocktower Time Tracker was updated on September 14, 2026 and Calume on September 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.*