Interval Timer HIIT Workout vs Sentinel by Solace Group
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Timer HIIT Workout
Customize your HIIT and Tabata workouts with this versatile interval timer. Features AI voice cues from celebrity personalities, music integration, and Apple Health syncing. Track your progress and share routines with ease.
- Customizable work/rest periods
- AI voice cues from celebrity personalities
- Music integration
- Apple Health & Apple Watch sync
- Save and organize workouts
- Real-time exercise on-screen cues
- Share workouts with others
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The ultimate Interval Timer for your HIIT Workouts and Tabata training! Our app is the perfect Workout Timer, offering customizable work/rest periods for High Intensity Interval Training, Tabata, Running, Boxing and circuit training. Achieve peak interval performance with our EXCLUSIVE AI Voice Cues (feat. Arnold, Snoop & The Rock) that keep you motivated without interrupting your music! Why this timer? We added voice cues from AI versions of Arnold Schwarzenegger, Snoop Dogg, and The Rock. Because honestly, who wouldn't want Arnold yelling "PUMP UP THOSE MUSCLES" between sets when you're still wondering "WTF was I thinking doing this workout"? - TURN INSTAGRAM & TIKTOK WORKOUTS INTO FOLLOW-ALONGS. Share any workout post or reel to Peak Interval and it becomes a timed follow-along - exercise clips, reps, rounds and rest all set up for you. Finally, a use for all those workouts you saved "for later". - CUSTOMIZABLE WORKOUTS: Tailor your interval timer for any HIIT, Tabata, or circuit training session. - MUSIC INTEGRATION. Your music keeps playing while the cues run during your interval timer training - no interruptions. Who are we to judge what you listen to? - AI VOICE QUEUES. Get motivated by AI Arnold, Snoop Dogg, & The Rock for a truly fun workout timer experience. - LOCKED SCREEN MODE. Cues still play even when your phone is locked—because you shouldn't have to keep your screen on. You need to save that battery % for all that social media scrolling. - APPLE HEALTH & APPLE WATCH. Your workouts automatically sync to Apple Health with live heart rate monitoring and heart rate zones right on screen. Start a workout on your iPhone and your Watch joins in automatically. Your calories, duration, and heart rate — all tracked, all saved, zero effort. - SAVE AND ORGANIZE INTERVAL TIMER WORKOUTS. color-coded, named, and ready for quick access. Easiest thing about your workout is going to be starting the timer - the workout itself - not so much. - BIG CLEAR NUMBERS WITH COLOR CODED SCREENS - so you can see your time from a distance. Like across the gym. - REAL TIME EXERCISE ON-SCREEN CUES—enter your exercise names, and they'll show up on-screen during interval timer workouts and announce what's coming next during rest. At that point you may regret adding one extra round. - SHARE WORKOUTS WITH OTHERS – perfect for coaches with clients. Or that friend that needs to lay off donuts and do some serious sweating. Perfect for: - Interval timer training - High-Intensity Interval Training (HIIT timer training) - Tabata timer workouts - Circuit training & CrossFit - Boxing/MMA training - Strength training & cardio - Personal trainers & group fitness - Interval timer running - Forcing yourself to take a break while bindge watching Netflix (for real, you can put 40 minutes "work" and 5 minutes "rest"). Again, no judgement zone, you do what you want. Still reading? Just download. See the app for yourself.
Sentinel by Solace Group
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Your Personalised Mental Health Guardian — Anytime, Anywhere. Sentinel is a personalised mental health platform designed by Solace Asia to support your wellbeing through cutting edge digital tools, professional care, and real-time progress tracking. Whether you’re managing stress, navigating burnout, or seeking long-term support, Sentinel offers a seamless care experience tailored to your needs. Sentinel is available for free to all individuals, workplaces, and healthcare providers that are partnered with Solace Asia!
Screenshots
Verdict
The clearest difference is in-app purchases: Sentinel by Solace Group at none against Interval Timer HIIT Workout's 5. Sentinel by Solace Group also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). Interval Timer HIIT Workout's advantage is update cadence (weekly vs fortnightly). On price and device support 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. Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month. Sentinel by Solace Group asks for nothing beyond the download.
Interval Timer HIIT Workout ships an update weekly, Sentinel by Solace Group fortnightly. Both last shipped on October 25, 2026.
| Parameter | Interval Timer HIIT Workout | Sentinel by Solace Group |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (339 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 339 — better | — |
| Update frequency | Weekly — better | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 18.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 98 MB | 214 MB |
| Age rating | 4+ | 17+ |
| Developer | Roli LLC | Wellifiy Pty Ltd |
In-app purchases
Interval Timer HIIT Workout
- Monthly Subscription7 Days trial$1.991 Month
- Monthly Subscription$2.991 Month
- Yearly Subscription1 Year trial$29.991 Year
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- Yearly Subscription7 Days trial$29.991 Year
- One Time Purchase$19.99
Sentinel by Solace Group
No in-app purchases
Questions
Is Interval Timer HIIT Workout free?
Is Sentinel by Solace Group free?
Do Interval Timer HIIT Workout or Sentinel by Solace Group have ads?
Which is updated more often, Interval Timer HIIT Workout or Sentinel by Solace Group?
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