# AI Voice Diary vs Space Master

The clearest difference is ads: AI Voice Diary at none against Space Master's shown. AI Voice Diary also leads on update cadence (every 3 days vs weekly) and iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AI Voice Diary ships an update every 3 days, Space Master weekly. The most recent releases landed on October 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AI Voice Diary | Space Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/ai-voice-diary/id6757315015/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free | — |
| Size | 8 MB | 9 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuki Hayakawa](https://appshunter.io/developer/1298453024) | [ISHIFUKU JUNYA](https://appshunter.io/developer/1857168754) |

## What reviewers say

### AI Voice Diary

[App page](https://appshunter.io/ios/app/ai-voice-diary/id6757315015)

This app offers a unique journaling experience by allowing users to record their thoughts for up to three minutes daily. It automatically transcribes and summarizes voice entries, making it easy to review your year visually on a calendar.

**Highlights:** 3-minute daily voice recording limit, Automatic silence trimming, AI-powered transcription, Multi-language support, AI-generated summaries, Visual year calendar

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Space Master

[App page](https://appshunter.io/ios/app/space-master/id6758099865)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI Voice Diary free?

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

### Is Space Master free?

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

### Do AI Voice Diary or Space Master have ads?

Space Master shows ads; AI Voice Diary does not.

### Which is updated more often, AI Voice Diary or Space Master?

AI Voice Diary ships an update every 3 days, and Space Master weekly. Most recently, AI Voice Diary was updated on October 9, 2026 and Space Master on October 31, 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.*