# Lock&Key vs Chronoji

The clearest difference is in-app purchases: Chronoji at none against Lock&Key's 2. Lock&Key's advantage is ads (none vs shown) and update cadence (every 10 days vs monthly). On price and device support there is nothing between them.

Both are free to download. Lock&Key sells 2 in-app purchases, starting at $4.99 per month. Chronoji asks for nothing beyond the download.

Lock&Key ships an update every 10 days, Chronoji monthly. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Lock&Key | Chronoji |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Monthly |
| Size | 73 MB | 12 MB |
| Requires iOS | **16.6** | 18.5 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | +4 | 4+ |
| Developer | [TURKTICARET.Net Yazilim Hiz. San. ve Tic. A.S.](https://appshunter.io/developer/332535029) | [gulsen ates](https://appshunter.io/developer/1803850887) |

## What reviewers say

### Lock&Key

[App page](https://appshunter.io/ios/app/lock-and-key-screen-time/id6758299678)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $21.99 | per year |


### Chronoji

[App page](https://appshunter.io/ios/app/chronoji-countdown-timer/id6759876573)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lock&Key free?

Lock&Key is free to download, with in-app purchases available.

### Is Chronoji free?

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

### Do Lock&Key or Chronoji have ads?

Chronoji shows ads; Lock&Key does not.

### Which is updated more often, Lock&Key or Chronoji?

Lock&Key ships an update every 10 days, and Chronoji monthly. Most recently, Lock&Key was updated on October 12, 2026 and Chronoji on October 1, 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.*