# Diary.Chat vs My Luna Flow

The clearest difference is in-app purchases: Diary.Chat at none against My Luna Flow's 3. My Luna Flow's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. My Luna Flow sells 3 in-app purchases, starting at $9.99 per month. Diary.Chat asks for nothing beyond the download.

Diary.Chat ships an update every 8 days, My Luna Flow fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Diary.Chat | My Luna Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diarychat/id6737240897/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | Free | — |
| Size | 4 MB | 68 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Underscore LLC](https://appshunter.io/developer/1775499124) | [Kevork Wakimian](https://appshunter.io/developer/1874945338) |

## What reviewers say

### Diary.Chat

[App page](https://appshunter.io/ios/app/diarychat/id6737240897)

This app helps you track your mood and thoughts with AI-powered insights and tailored prompts. Build a journaling habit with fun features and review daily summaries to understand your emotional patterns and improve mental well-being.

**Highlights:** Tailored journaling prompts, AI-driven mood and thought analysis, Daily summaries of emotional patterns, Gamified habit building (reminders, streaks, achievements), Secure and private data storage, Voice recording and image support

**Features:** macOS Compatibility

**In-app purchases:** none


### My Luna Flow

[App page](https://appshunter.io/ios/app/my-luna-flow-period-tracker/id6775867444)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Luna Pro Monthly | $9.99 | per month |
| Luna Pro Annual | $59.99 | per year |
| Luna Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Diary.Chat free?

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

### Is My Luna Flow free?

My Luna Flow is free to download, with in-app purchases available.

### Do Diary.Chat or My Luna Flow have ads?

Neither Diary.Chat nor My Luna Flow shows ads.

### Which is updated more often, Diary.Chat or My Luna Flow?

Diary.Chat ships an update every 8 days, and My Luna Flow fortnightly. Most recently, Diary.Chat was updated on October 30, 2026 and My Luna Flow on October 28, 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.*