# Memo Lock vs Simple Notes

The clearest difference is in-app purchases: Memo Lock at none against Simple Notes's 1. Memo Lock also leads on update cadence (fortnightly vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Simple Notes sells 1 one-off in-app purchase. Memo Lock asks for nothing beyond the download.

Memo Lock ships an update fortnightly, Simple Notes monthly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Memo Lock | Simple Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 89 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Memo International Limited](https://appshunter.io/developer/1764225200) | [HIMON SOFTWARE LTD](https://appshunter.io/developer/1734108790) |

## What reviewers say

### Memo Lock

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Notes

[App page](https://appshunter.io/ios/app/simple-notes-markdown-notes/id6761061027)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Development | $1.99 | one-time |


## Frequently asked questions

### Is Memo Lock free?

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

### Is Simple Notes free?

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

### Do Memo Lock or Simple Notes have ads?

Neither Memo Lock nor Simple Notes shows ads.

### Which is updated more often, Memo Lock or Simple Notes?

Memo Lock ships an update fortnightly, and Simple Notes monthly. Most recently, Memo Lock was updated on October 27, 2026 and Simple Notes on October 25, 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.*