# inti light vs Astrel：ケガ予防×コンディション管理

The clearest difference is in-app purchases: inti light at none against Astrel：ケガ予防×コンディション管理's 2. inti light also leads on ads (none vs shown) and device support (3 vs 1). Astrel：ケガ予防×コンディション管理's advantage is update cadence (every 9 days vs every 4 weeks). On price there is nothing between them.

Both are free to download. Astrel：ケガ予防×コンディション管理 sells 2 in-app purchases, starting at $0.99 per 7 days. inti light asks for nothing beyond the download.

inti light ships an update every 4 weeks, Astrel：ケガ予防×コンディション管理 every 9 days. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | inti light | Astrel：ケガ予防×コンディション管理 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 138 MB | 88 MB |
| Requires iOS | **7.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Moon moon, Inc.](https://appshunter.io/developer/982020558) | [Tensho Yashiro](https://appshunter.io/developer/1850230279) |

## What reviewers say

### inti light

[App page](https://appshunter.io/ios/app/inti-light/id1313172451)

This app enhances your wake-up experience by simulating sunlight to regulate your body's natural rhythm. It supports a more comfortable awakening and improved sleep quality. Requires a separate light alarm device to function.

**Highlights:** Sunrise simulation control, Energy light on/off and color adjustment, Counseling function, Automatic clock synchronization via Bluetooth, Light alarm status display, Operation guide

**Features:** macOS Compatibility

**In-app purchases:** none


### Astrel：ケガ予防×コンディション管理

[App page](https://appshunter.io/ios/app/astrel/id6755174672)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| トレーニングモードPro(1週間) | $0.99 | per 7 days |
| トレーニングモード(1ヶ月) | $3.99 | per month |


## Frequently asked questions

### Is inti light free?

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

### Is Astrel：ケガ予防×コンディション管理 free?

Astrel：ケガ予防×コンディション管理 is free to download, with in-app purchases available.

### Do inti light or Astrel：ケガ予防×コンディション管理 have ads?

Astrel：ケガ予防×コンディション管理 shows ads; inti light does not.

### Which is updated more often, inti light or Astrel：ケガ予防×コンディション管理?

inti light ships an update every 4 weeks, and Astrel：ケガ予防×コンディション管理 every 9 days. Most recently, inti light was updated on October 21, 2026 and Astrel：ケガ予防×コンディション管理 on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*