# Diseen vs One

The clearest difference is ads: One at none against Diseen's shown. One also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (13.0 vs 18.5). 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.

Diseen ships an update every 2 months, One every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Diseen | One |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 5 MB | 20 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jun Kishihara](https://appshunter.io/developer/1822756745) | [Yuga Matsumi](https://appshunter.io/developer/1866567850) |

## What reviewers say

### Diseen

[App page](https://appshunter.io/ios/app/diseen/id6754192307)

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

**In-app purchases:** none


### One

[App page](https://appshunter.io/ios/app/one-line-diary-mood-log/id6757390722)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diseen free?

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

### Is One free?

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

### Do Diseen or One have ads?

Diseen shows ads; One does not.

### Which is updated more often, Diseen or One?

Diseen ships an update every 2 months, and One every 3 days. Most recently, Diseen was updated on October 30, 2026 and One 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.*