BTワットチェッカー vs VoiceTimeSignal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BTワットチェッカー
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【1】 アプリケーション概要 ラトックシステムのワットチェッカーRS-BTWATTCH2で計測された消費電力など各種データの表示と電源ON・OFF操作をするアプリケーションです。 【2】 特徴 ● 消費電力・電流・電圧をリアルタイム表示 ● 消費電力量を電気料金・CO2排出量に換算表示 ● 1時間・１日・1ヶ月・1年単位で棒グラフ表示 ● 計測データをCSVファイル保存 ● 電源ON/OFF操作
VoiceTimeSignal
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The time will be announced by voice. *The voice tone, reading tone, etc. are changeable.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | BTワットチェッカー | VoiceTimeSignal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | RATOC Systems, Inc. | Hideaki Uchikoshi |
In-app purchases
BTワットチェッカー
No in-app purchases
VoiceTimeSignal
No in-app purchases
Questions
Is BTワットチェッカー free?
Is VoiceTimeSignal free?
Do BTワットチェッカー or VoiceTimeSignal have ads?
Which is updated more often, BTワットチェッカー or VoiceTimeSignal?
Other comparisons
