# BTワットチェッカー vs VoiceTimeSignal

The clearest difference is ads: BTワットチェッカー at none against VoiceTimeSignal's shown. VoiceTimeSignal's advantage is update cadence (every 2 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BTワットチェッカー ships an update every 3 months, VoiceTimeSignal every 2 weeks. The most recent releases landed on September 9, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | BTワットチェッカー | VoiceTimeSignal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 3 MB | 35 MB |
| Requires iOS | **15.6** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### BTワットチェッカー

[App page](https://appshunter.io/ios/app/bt/id1490362165)

**Features:** macOS Compatibility

**In-app purchases:** none


### VoiceTimeSignal

[App page](https://appshunter.io/ios/app/voicetimesignal/id6503018936)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BTワットチェッカー free?

BTワットチェッカー is free to download, with no in-app purchases.

### Is VoiceTimeSignal free?

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

### Do BTワットチェッカー or VoiceTimeSignal have ads?

VoiceTimeSignal shows ads; BTワットチェッカー does not.

### Which is updated more often, BTワットチェッカー or VoiceTimeSignal?

BTワットチェッカー ships an update every 3 months, and VoiceTimeSignal every 2 weeks. Most recently, BTワットチェッカー was updated on September 9, 2026 and VoiceTimeSignal on August 3, 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.*