SleepSign vs MuscleTrainingTimer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SleepSign
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SleepSign-Cloud (スリープサイン クラウド)は、研究の参加者向けのアプリです。 研究機関からの指示に従って、操作ください。 ・日々の活動量計データを読み込みクラウドへ送信・登録します. ・就床・離床時刻を登録・修正します. ※研究内容によっては登録・修正できない場合もあります. ーーーーーーー よくあるご質問 ーーーーーーー 下記のWebサイトに掲載しております。 https://support.sleepsign-cloud.jp/faq/index.html ーーーーーーー 対応機種とご注意点 ーーーーーーー ・NFC(フェリカ)を使用するため、未搭載の端末(iPhone6/6S以前、iPad)ではご利用できません。 ・インターネット接続ができない環境でのご利用はできません。
MuscleTrainingTimer
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The all-in-one interval timer for HIIT, Tabata, circuit & strength training — designed by a Physical Therapist. Build multi-exercise routines, keep your own music playing, and stay on pace with 50+ sound cues, Live Activities, and 26 customizable themes. ■ WORKOUT BUILDER - Combine multiple exercises into one routine with rounds and rest between blocks - Ladder workouts like 21-15-9, plus reps-based or time-based intervals - Cooldown periods and per-block notes for weight, distance or target reps - Start instantly with ready-made presets ■ SOUND & MUSIC - 50+ sound effects: per-second ticks, interval signals, countdown & finish cues - Layers over your music — plays on top without stopping Apple Music, Spotify or podcasts - Turn individual sounds on/off; spoken cues announce "Work", "Rest" and more - Background playback with the screen locked, plus haptic feedback ■ CONTROLS - Start, pause, resume, reset - Skip to the next phase or step back to the previous one - Voice commands ("Start", "Pause", "Reset") and Siri Shortcuts ■ MAKE IT YOURS - 26 color themes or build your own palette - Ring or linear layout, solid or glass background, adjustable spacing - Live Activity & Dynamic Island show your phase and time on the Lock Screen ■ ORGANIZE & SHARE - Full-text search, favorites, and sorting by usage, created or updated date - Share routines by QR code or link, and save your own templates - Log sets with weight, reps & notes; auto-sync to Apple Health - Workout reminders on the days and times you choose ■ FREE & PRO Use the core timer for free. Upgrade to Pro for unlimited menus, multi-block workouts, Live Activities, custom themes, Apple Health sync, voice control, reminders & more — monthly, yearly, or one-time lifetime. ----------Designed by a Physical Therapist-------------- This app was developed by a physical therapist. Exercises performed with efficient time management are easier to sustain and more effective. Whether you train at the gym, do CrossFit or yoga, study, or work through rehabilitation, preset values let you start right away. Free sound files from Springin Sound Stock https://www.springin.org/sound-stock/ Free sound files from Sound Effect Labo https://soundeffect-lab.info/ Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: SleepSign at none against MuscleTrainingTimer's 1. MuscleTrainingTimer's advantage is update cadence (every 9 days vs monthly). On price, ads, 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. MuscleTrainingTimer sells 1 one-off in-app purchase. SleepSign asks for nothing beyond the download.
SleepSign ships an update monthly, MuscleTrainingTimer every 9 days. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.
| Parameter | SleepSign | MuscleTrainingTimer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.5 — better | 16.0 |
| Further details — not scored | ||
| Size | 32 MB | 20 MB |
| Age rating | 12+ | 4+ |
| Developer | Kissei Comtec Co., Ltd. | ryo muranaka |
In-app purchases
SleepSign
No in-app purchases
MuscleTrainingTimer
- Lifetime Pro$19.99
Questions
Is SleepSign free?
Is MuscleTrainingTimer free?
Do SleepSign or MuscleTrainingTimer have ads?
Which is updated more often, SleepSign or MuscleTrainingTimer?
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