# ASTROTIMER vs 勉強タイマー

The clearest difference is price: ASTROTIMER at Free against 勉強タイマー's $0.99. ASTROTIMER also leads on update cadence (every 6 days vs every 4 weeks) and device support (3 vs 1). 勉強タイマー's advantage is in-app purchases (none vs 1) and ads (none vs shown).

ASTROTIMER is free to download; 勉強タイマー costs $0.99 up front. ASTROTIMER sells 1 one-off in-app purchase. 勉強タイマー asks for nothing beyond the download.

ASTROTIMER ships an update every 6 days, 勉強タイマー every 4 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ASTROTIMER | 勉強タイマー |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Monetization | — | Paid |
| Size | 6 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Tsunoda](https://appshunter.io/developer/1884742586) | [SMART BIT K.K](https://appshunter.io/developer/1896559487) |

## What reviewers say

### ASTROTIMER

[App page](https://appshunter.io/ios/app/astrotimer/id6761328042)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### 勉強タイマー

[App page](https://appshunter.io/ios/app/id6794773283)

A visual countdown timer that helps you manage study, work, and break times. Color bars decrease to show remaining time at a glance, with customizable skins and sound options. Works offline and requires no account.

**Highlights:** Visual countdown timer with color bars, Adjustable time settings up to 199 minutes, Large horizontal display for easy viewing, Customizable aluminum-style skins, Adjustable notification sounds and haptic feedback, Offline functionality

**In-app purchases:** none


## Frequently asked questions

### Is ASTROTIMER free?

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

### Is 勉強タイマー free?

勉強タイマー costs $0.99, with no in-app purchases.

### Do ASTROTIMER or 勉強タイマー have ads?

ASTROTIMER shows ads; 勉強タイマー does not.

### Which is updated more often, ASTROTIMER or 勉強タイマー?

ASTROTIMER ships an update every 6 days, and 勉強タイマー every 4 weeks. Most recently, ASTROTIMER was updated on October 25, 2026 and 勉強タイマー on October 29, 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.*