Stretch Timer Interval HIIT vs NatureVoice(BGM For Sleep)
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stretch Timer Interval HIIT
This app helps you build and maintain a consistent stretching routine. Customize your workouts with adjustable sets and times, track your progress with a calendar view, and enjoy a user-friendly interface with dark mode support. It's designed to make daily stretching an effortless habit.
- Customizable sets and times
- Multiple stretching menus
- Calendar history view
- Adjustable sound effects
- Dark mode support
- Automatic backup (premium)
Read full descriptionHide full description
【English Version】 Stay on track as the timer automatically alternates between work and rest. Customize each interval to fit your workout and train your way. Perfect for interval training, strength training, HIIT, circuit training, stretching, and more. Simply set your work time, rest time, and number of sets, and you’re ready to begin. Whether you work out at home or at the gym, this app makes it easy to stay active. It’s also a great choice if you want to build a consistent routine—starting with just two or three workouts a week—to support your health and fitness goals. 【PERFECT FOR YOU IF YOU WANT TO】 • Customize work intervals, rest intervals, and the number of sets • Switch automatically between work and rest • Strength train at home or at the gym • Use a timer for HIIT or circuit training • Focus on your workout instead of counting seconds • Save workout routines tailored to your needs • Review your workout days and track your consistency • Build a lasting exercise habit to stay healthy and fit 【KEY FEATURES】 • Set work and rest intervals freely • Choose the number of sets and repetitions for automatic cycling • Create and register multiple workout routines • Save your custom timers and routines • View the remaining time and current set at a glance with a large, easy-to-read display • Get interval alerts with sound effects, voice countdowns, and vibration • Review your workout history in a calendar • Customize the theme color, background music, and volume • Dark Mode support 【GREAT FOR】 • Interval training • Strength training • HIIT • Circuit training • Bodyweight workouts • Stretching • Yoga • Warm-ups • Core training Create your own routine once, and there’s no need to set it up again. Just open the app and jump straight into your regular workout. Your workout history is displayed in a calendar, making it easy to look back on the days you exercised and see how consistently you’ve kept going. Make your daily workouts simpler with an interval timer that works at your pace. 【PREMIUM FEATURES】 The Premium Plan includes the following features: • No banner or full-screen ads • Full theme color customization • Automatic data backup 【ABOUT THE PREMIUM PLAN】 • This is a monthly auto-renewing subscription. • If a free trial is available, the trial period will be shown on the purchase screen. • Please review the price and subscription period on the in-app purchase screen before subscribing. • Your Apple Account will be charged once the purchase is confirmed. • Your subscription renews automatically unless auto-renewal is turned off at least 24 hours before the end of the current subscription period. • To view or cancel your subscription, open Settings on your iPhone, tap your name, then tap Subscriptions. 【RESTORE PURCHASES】 If you switch to a new device, you can restore your purchased features by signing in with the same Apple Account used for the original purchase. In the app, go to Settings, then select Restore Premium Purchase. 【TERMS OF USE】 https://nilcraft.jp/terms?lang=en 【PRIVACY POLICY】 https://nilcraft.jp/privacy_policy?lang=en
NatureVoice(BGM For Sleep)
Read full descriptionHide full description
NatureVoice – High-Resolution Nature Sound BGM Pure nature, zero distractions. No ads. No internet. Just the highest-quality natural sound experience. 【Recommended: Use Headphones】 NatureVoice is a high-resolution ambient sound app designed to deliver the purest natural sound your device can reproduce. Whether it’s the rustle of trees, the patter of rain, or the gentle flow of a river — every sound is captured with lifelike clarity. Put on your headphones and you’ll feel as if nature itself unfolds right before you. 【Features】 Completely Offline – Enjoy authentic nature sounds anytime, anywhere. No Ads, No Purchases – Immerse yourself without interruptions. Simple & Intuitive – Easy for anyone to use, from kids to seniors. High-Resolution Audio – Experience the highest sound quality your device can provide. 【Included Sounds】 Forest: The whisper of leaves and songs of birds blending in harmony. River: A gentle stream that calms the mind and resets your rhythm. Rain: Soft raindrops against the window, washing away distractions. Waterfall: The powerful rush of falling water that energizes focus. Storm: The vibrant energy of rain and wind — nature in motion. 【Perfect For】 Finding peace and relaxation Meditation, yoga, or mindfulness sessions Taking a quiet break from work or study 【Bring Nature With You】 No network. No ads. Just pure, high-resolution sound that transforms your space into a serene natural world — right from your smartphone. Experience the stillness and beauty of nature, wherever you are. Listen on YouTube: https://www.youtube.com/@SceneVoice
Screenshots
Verdict
The clearest difference is price: Stretch Timer Interval HIIT at Free against NatureVoice(BGM For Sleep)'s $0.99. NatureVoice(BGM For Sleep)'s advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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
Stretch Timer Interval HIIT is free to download; NatureVoice(BGM For Sleep) costs $0.99 up front. Stretch Timer Interval HIIT sells 2 in-app purchases, starting at $3.99 per month. NatureVoice(BGM For Sleep) asks for nothing beyond the download.
Stretch Timer Interval HIIT ships an update every 2 weeks, NatureVoice(BGM For Sleep) every 8 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.
| Parameter | Stretch Timer Interval HIIT | NatureVoice(BGM For Sleep) |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 259 MB | 162 MB |
| Age rating | 4+ | 4+ |
| Developer | NilCraft Inc. | SINN MIRAI, K.K. |
In-app purchases
Stretch Timer Interval HIIT
- Premium Features14 Days trial$3.991 Month
- Premium features$39.991 Year
NatureVoice(BGM For Sleep)
No in-app purchases
Questions
Is Stretch Timer Interval HIIT free?
Is NatureVoice(BGM For Sleep) free?
Do Stretch Timer Interval HIIT or NatureVoice(BGM For Sleep) have ads?
Which is updated more often, Stretch Timer Interval HIIT or NatureVoice(BGM For Sleep)?
Other comparisons















