# Lokk. vs Cala

The clearest difference is in-app purchases: Lokk. at none against Cala's 2. Lokk. also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Cala sells 2 in-app purchases, starting at $7.99 per month. Lokk. asks for nothing beyond the download.

Lokk. ships an update every 2 weeks, Cala every 2 months. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Lokk. | Cala |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 34 MB | 26 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LUIS VALENTIN WARNECKER](https://appshunter.io/developer/1827529790) | [Spark Digital Incorporated](https://appshunter.io/developer/1875625754) |

## What reviewers say

### Lokk.

[App page](https://appshunter.io/ios/app/lokk/id6748835451)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cala

[App page](https://appshunter.io/ios/app/cala-app-blocker-screen-time/id6761075944)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cala Pro — Monthly | $7.99 | per month |
| Cala Pro — Yearly | $59.99 | per year |


## Frequently asked questions

### Is Lokk. free?

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

### Is Cala free?

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

### Do Lokk. or Cala have ads?

Neither Lokk. nor Cala shows ads.

### Which is updated more often, Lokk. or Cala?

Lokk. ships an update every 2 weeks, and Cala every 2 months. Most recently, Lokk. was updated on October 11, 2026 and Cala on October 14, 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.*