# Protopixel vs Memo Lock

The clearest difference is update cadence: Memo Lock at fortnightly against Protopixel's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Protopixel ships an update every 2 months, Memo Lock fortnightly. The most recent releases landed on September 20, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Protopixel | Memo Lock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 48 MB | 89 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ProtoPixel S.L.](https://appshunter.io/developer/1567878723) | [Memo International Limited](https://appshunter.io/developer/1764225200) |

## What reviewers say

### Protopixel

[App page](https://appshunter.io/ios/app/protopixel/id6450700467)

**In-app purchases:** none


### Memo Lock

[App page](https://appshunter.io/ios/app/memo-lock/id6654903493)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Protopixel free?

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

### Is Memo Lock free?

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

### Do Protopixel or Memo Lock have ads?

Neither Protopixel nor Memo Lock shows ads.

### Which is updated more often, Protopixel or Memo Lock?

Protopixel ships an update every 2 months, and Memo Lock fortnightly. Most recently, Protopixel was updated on September 20, 2026 and Memo Lock on September 15, 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.*