# 倍速時計 vs Starlit

The clearest difference is update cadence: Starlit at every 11 days against 倍速時計's every 3 weeks. Starlit also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 倍速時計 sells 1 one-off in-app purchase and Starlit sells 7 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

倍速時計 ships an update every 3 weeks, Starlit every 11 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | 倍速時計 | Starlit |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 33 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Maho Ishikawa](https://appshunter.io/developer/6793993796) | [Katsuhide Leung](https://appshunter.io/developer/6775420732) |

## What reviewers say

### 倍速時計

[App page](https://appshunter.io/ios/app/id6793993794)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro（買い切り） | $1.99 | one-time |


### Starlit

[App page](https://appshunter.io/ios/app/starlit/id6796785576)

This app transforms study sessions into a celestial experience. Earn stars for focused time, creating a unique night sky for each subject. Track progress visually through constellations and graphs, making learning a rewarding journey.

**Highlights:** Focus timer with customizable durations, Subject-specific constellations, Visual progress tracking with night sky creation, Weekly and monthly study time breakdown, Exam countdown, Constellation encyclopedia

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starlit+ 月額プラン | $1.99 | per month |
| Starlit+ 年額プラン | $14.99 | per year |
| 空『暁』 | $1.99 | one-time |
| 空『オーロラ』 | $1.99 | one-time |
| 空『雪の夜』 | $1.99 | one-time |
| 空セット Vol.1（3種） | $3.99 | one-time |
| Starlit+ 買い切り | $19.99 | one-time |


## Frequently asked questions

### Is 倍速時計 free?

倍速時計 is free to download, with in-app purchases available.

### Is Starlit free?

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

### Do 倍速時計 or Starlit have ads?

Neither 倍速時計 nor Starlit shows ads.

### Which is updated more often, 倍速時計 or Starlit?

倍速時計 ships an update every 3 weeks, and Starlit every 11 days. Most recently, 倍速時計 was updated on October 25, 2026 and Starlit on October 25, 2026.

---

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