# Cosmos vs Chronos

The clearest difference is in-app purchases: Cosmos at none against Chronos's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chronos sells 4 in-app purchases, starting at $2.99 per month. Cosmos asks for nothing beyond the download.

Cosmos ships an update every 10 days, Chronos every 6 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Cosmos | Chronos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (9 ratings)](https://appshunter.io/ios/app/chronos-focus-app-blocker/id6755707119/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 30 MB | 249 MB |
| Requires iOS | 17.0 | 17 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YoungSeo Yun](https://appshunter.io/developer/1827154411) | [TRILLIWON, Co.](https://appshunter.io/developer/1050731374) |

## What reviewers say

### Cosmos

[App page](https://appshunter.io/ios/app/cosmos/id6749366368)

**In-app purchases:** none


### Chronos

[App page](https://appshunter.io/ios/app/chronos-focus-app-blocker/id6755707119)

Enhance your concentration by blocking distracting apps and immersing yourself in calming music. Track your focus sessions and build better habits for deep work.

**Highlights:** Block distracting apps, Curated lofi and ambient sounds, Track focus streaks, Customizable focus sessions, Offline music playback, App blocking via Family Controls, Home screen widgets and Siri Shortcuts

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chronos Pro Monthly | $2.99 | per month |
| Chronos Premium (Annual - Discount) | $7.99 | per year |
| Chronos Pro Yearly | $9.99 | per year |
| Chronos Pro Lifetime | $0.99 | one-time |


## Frequently asked questions

### Is Cosmos free?

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

### Is Chronos free?

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

### Do Cosmos or Chronos have ads?

Neither Cosmos nor Chronos shows ads.

### Which is updated more often, Cosmos or Chronos?

Cosmos ships an update every 10 days, and Chronos every 6 days. Most recently, Cosmos was updated on October 30, 2026 and Chronos on October 30, 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.*