# Polylog vs Mental Note

The clearest difference is rating: Polylog at 2.0 against Mental Note's 1.0. Polylog also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.0). Mental Note's advantage is ads (none vs shown) and update cadence (weekly vs fortnightly). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Polylog sells 10 one-off in-app purchases and Mental Note sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Polylog holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Polylog ships an update fortnightly, Mental Note weekly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Polylog | Mental Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/polylog/id1622203191/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/mental-note-ai-mood-diary/id6460934704/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 12 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Thakornkrid Thanatharapokin](https://appshunter.io/developer/1622203193) | [Exhalo](https://appshunter.io/developer/1683499451) |

## What reviewers say

### Polylog

[App page](https://appshunter.io/ios/app/polylog/id1622203191)

This app offers a digital journaling experience, allowing users to express themselves through text, images, and decorative elements. It fosters a community where users can share entries and find inspiration from others.

**Highlights:** Versatile text editor, Add images, stickers, and decorations, Extensive content library, Virtual store for customization, Engage with a global community, Comment on diary entries

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 PolyCoins | $0.99 | one-time |
| 100 PolyCoins | $2.99 | one-time |
| 225 PolyCoins | $5.99 | one-time |
| 525 PolyCoins | $13.99 | one-time |
| 844 PolyCoins | $21.99 | one-time |
| 1070 Polycoins | $26.99 | one-time |
| 1500 PolyCoins | $38.99 | one-time |
| 1850 PolyCoins | $46.99 | one-time |
| 2300 PolyCoins | $54.99 | one-time |
| 3000 PolyCoins | $69.99 | one-time |


### Mental Note

[App page](https://appshunter.io/ios/app/mental-note-ai-mood-diary/id6460934704)

This app uses AI-powered semantic analysis to help you understand your emotions and thoughts through journaling. Record daily musings and reflections to gain personalized insights into your personal development and self-awareness. Your entries are encrypted and securely stored for privacy.

**Highlights:** AI-enhanced semantic analysis, Sentiment and tone evaluation, Personalized insights, Encrypted and secure storage, Selective data sharing options, Daily musings and reflections

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $1.99 | per 7 days |
| Premium Weekly | $2.99 | per 7 days |
| Mental Journal Premium | $29.99 | per 3 months |


## Frequently asked questions

### Is Polylog free?

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

### Is Mental Note free?

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

### Which has better reviews, Polylog or Mental Note?

Polylog is rated higher. Polylog averages 2.0 out of 5 from 1 ratings, while Mental Note averages 1.0 from 1 ratings.

### Do Polylog or Mental Note have ads?

Polylog shows ads; Mental Note does not.

### Which is updated more often, Polylog or Mental Note?

Polylog ships an update fortnightly, and Mental Note weekly. Most recently, Polylog was updated on October 24, 2026 and Mental Note on October 19, 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.*