# Zen vs Three

The clearest difference is ads: Three at none against Zen's shown. Zen's advantage is iOS requirement (15.0 vs 18.5). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Zen sells 2 in-app purchases, starting at $2.99 per month and Three sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Zen ships an update every 10 days, Three weekly. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Zen | Three |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/zen-daily-diary-journal/id1665333520/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 30 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryunosuke Nagase](https://appshunter.io/developer/1506451599) | [SageLabs](https://appshunter.io/developer/1810657904) |

## What reviewers say

### Zen

[App page](https://appshunter.io/ios/app/zen-daily-diary-journal/id1665333520)

This minimal journaling app helps you build a daily habit of recording your thoughts and experiences. It offers a simple, line-by-line entry system, calendar synchronization, and security features like password and biometric unlock. Organize entries with tags for easy retrieval.

**Highlights:** Effortless line-by-line recording, Calendar synchronization for context, Daily notification reminders, Minimalist and intuitive design, Password and biometric security, Tag-based organization and search

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PREMIUM - MONTHLY | $2.99 | per month |
| PREMIUM - ANNUAL | $19.99 | per year |


### Three

[App page](https://appshunter.io/ios/app/three-data-driven-journaling/id6757117935)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription - Monthly | $3.99 | per month |
| Premium Subscription - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Zen free?

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

### Is Three free?

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

### Do Zen or Three have ads?

Zen shows ads; Three does not.

### Which is updated more often, Zen or Three?

Zen ships an update every 10 days, and Three weekly. Most recently, Zen was updated on September 24, 2026 and Three on September 10, 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.*