# Secret Notepad with Password vs OTenkeyCalc

The clearest difference is in-app purchases: OTenkeyCalc at none against Secret Notepad with Password's 1. OTenkeyCalc also leads on update cadence (every 2 weeks vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Secret Notepad with Password sells 1 one-off in-app purchase. OTenkeyCalc asks for nothing beyond the download.

Secret Notepad with Password ships an update monthly, OTenkeyCalc every 2 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Secret Notepad with Password | OTenkeyCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/secret-notepad-with-password/id6480199456/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 37 MB |
| Requires iOS | 17.0 | **16.7.10** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [manabu ueda](https://appshunter.io/developer/1606163236) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Secret Notepad with Password

[App page](https://appshunter.io/ios/app/secret-notepad-with-password/id6480199456)

Securely store your private thoughts and images with a password-protected vault. Features biometric unlock, screen blurring, and the ability to attach photos directly to notes without saving them to your camera roll.

**Highlights:** Password and biometric authentication, Screen blurring for privacy, Attach photos directly to notes, Photos not saved to camera roll, Undo/redo support, Search functionality, Dark mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Plan(Lifetime) | $2.99 | one-time |


### OTenkeyCalc

[App page](https://appshunter.io/ios/app/otenkeycalc/id6502439720)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Secret Notepad with Password free?

Secret Notepad with Password is free to download, with in-app purchases available.

### Is OTenkeyCalc free?

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

### Do Secret Notepad with Password or OTenkeyCalc have ads?

Both Secret Notepad with Password and OTenkeyCalc show ads.

### Which is updated more often, Secret Notepad with Password or OTenkeyCalc?

Secret Notepad with Password ships an update monthly, and OTenkeyCalc every 2 weeks. Most recently, Secret Notepad with Password was updated on October 30, 2026 and OTenkeyCalc on October 27, 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.*