# Iris公式 vs Luludiary

The clearest difference is update cadence: Luludiary at every 3 days against Iris公式's every 50 months. On price, ads, 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.

Iris公式 ships an update every 50 months, Luludiary every 3 days. The most recent releases landed on September 8, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Iris公式 | Luludiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 3 days** |
| Size | 16 MB | 45 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [HIROMI SATO](https://appshunter.io/developer/1631474557) | [Seiya.k](https://appshunter.io/developer/383021944) |

## What reviewers say

### Iris公式

[App page](https://appshunter.io/ios/app/iris/id1631474525)

**In-app purchases:** none


### Luludiary

[App page](https://appshunter.io/ios/app/luludiary-private-client-log/id6797946558)

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

**In-app purchases:** none


## Frequently asked questions

### Is Iris公式 free?

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

### Is Luludiary free?

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

### Do Iris公式 or Luludiary have ads?

Neither Iris公式 nor Luludiary shows ads.

### Which is updated more often, Iris公式 or Luludiary?

Iris公式 ships an update every 50 months, and Luludiary every 3 days. Most recently, Iris公式 was updated on September 8, 2026 and Luludiary on September 21, 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.*