# My Notes Safe vs SD401

The clearest difference is in-app purchases: SD401 at none against My Notes Safe's 1. SD401 also leads on ads (none vs shown). My Notes Safe's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (13.0 vs 15.5). On price and device support there is nothing between them.

Both are free to download. My Notes Safe sells 1 one-off in-app purchase. SD401 asks for nothing beyond the download.

My Notes Safe ships an update every 2 months, SD401 every 5 months. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | My Notes Safe | SD401 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (83 ratings)](https://appshunter.io/ios/app/my-notes-safe/id689971781/reviews)** | — |
| Number of ratings | **83** | — |
| Positive reviews | 78.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 25 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [炜 桂](https://appshunter.io/developer/599269607) | [Owen Brown](https://appshunter.io/developer/979499266) |

## What reviewers say

### My Notes Safe

[App page](https://appshunter.io/ios/app/my-notes-safe/id689971781)

Securely store your private thoughts and sensitive information with multiple layers of protection. Features include flexible lock options, instant auto-lock, and customizable note organization. Back up your data to the cloud for easy recovery on new devices.

**Highlights:** Flexible lock options (PIN, password, pattern), Decoy password protection, Instant auto-lock, Quick note capture, Swipe gestures for actions, Cloud backup and restore

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### SD401

[App page](https://appshunter.io/ios/app/sd401/id979499267)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is My Notes Safe free?

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

### Is SD401 free?

SD401 is free to download, with no in-app purchases.

### Do My Notes Safe or SD401 have ads?

My Notes Safe shows ads; SD401 does not.

### Which is updated more often, My Notes Safe or SD401?

My Notes Safe ships an update every 2 months, and SD401 every 5 months. Most recently, My Notes Safe was updated on October 11, 2026 and SD401 on October 9, 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.*