# Rock Lock vs Plainsight

The clearest difference is iOS requirement: Plainsight at 15.0 against Rock Lock's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Rock Lock sells 1 one-off in-app purchase and Plainsight sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rock Lock ships an update fortnightly, Plainsight every 2 weeks. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Rock Lock | Plainsight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Size | 12 MB | 27 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ron Yahav](https://appshunter.io/developer/1879738117) | [KLEEM STUDIO, LLC](https://appshunter.io/developer/1894041795) |

## What reviewers say

### Rock Lock

[App page](https://appshunter.io/ios/app/rock-lock-app-blocker/id6760949840)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rock Lock Pro | $2.99 | one-time |


### Plainsight

[App page](https://appshunter.io/ios/app/plainsight-private-notes/id6762402258)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plainsight - Private Notes | $4.99 | one-time |


## Frequently asked questions

### Is Rock Lock free?

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

### Is Plainsight free?

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

### Do Rock Lock or Plainsight have ads?

Neither Rock Lock nor Plainsight shows ads.

### Which is updated more often, Rock Lock or Plainsight?

Rock Lock ships an update fortnightly, and Plainsight every 2 weeks. Most recently, Rock Lock was updated on October 2, 2026 and Plainsight 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.*