# ErgoNova Appen vs notesDiary

The clearest difference is in-app purchases: ErgoNova Appen at none against notesDiary's 2. ErgoNova Appen also leads on iOS requirement (12.0 vs 16.0). notesDiary's advantage is update cadence (fortnightly vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. notesDiary sells 2 in-app purchases, starting at $6.99 per month. ErgoNova Appen asks for nothing beyond the download.

ErgoNova Appen ships an update every 12 months, notesDiary fortnightly. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | ErgoNova Appen | notesDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/notesdiary/id6474940011/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Monetization | — | Subscription |
| Size | 94 MB | 13 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AB Utbildning & Co](https://appshunter.io/developer/561876521) | [Fox.ai Limited](https://appshunter.io/developer/1703764034) |

## What reviewers say

### ErgoNova Appen

[App page](https://appshunter.io/ios/app/ergonova-appen/id1048531221)

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

**In-app purchases:** none


### notesDiary

[App page](https://appshunter.io/ios/app/notesdiary/id6474940011)

A private digital diary app that functions like a Twitter feed for your thoughts. It features an AI writing assistant for polished entries and offers customization options. Track personal growth with smart analytics and access your entries securely anytime, anywhere.

**Highlights:** Twitter-style private diary entries, AI writing assistant for revisions, Lock and encryption for security, Customizable themes, fonts, and colors, Intuitive timeline and search, Smart analytics for personal growth, Cross-device access

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $6.99 | per month |
| 6-Month Subscription | $24.99 | per 6 months |


## Frequently asked questions

### Is ErgoNova Appen free?

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

### Is notesDiary free?

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

### Do ErgoNova Appen or notesDiary have ads?

Neither ErgoNova Appen nor notesDiary shows ads.

### Which is updated more often, ErgoNova Appen or notesDiary?

ErgoNova Appen ships an update every 12 months, and notesDiary fortnightly. Most recently, ErgoNova Appen was updated on September 30, 2026 and notesDiary on October 1, 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.*