Precision Interval Timer vs Rollbook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Precision Interval Timer
Create custom workout routines with pre-programmed warm-ups, intervals, conditioning, and cool-downs. Set work and rest periods, repeat cycles, and let the timer guide your training session.
- Pre-program entire workouts
- Customizable work and rest intervals
- Repeat cycles for exercises
- Warm-up, conditioning, and cool-down sections
- Guided training sessions
- Stackable interval sections
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With this interval timer you can pre-program your entire workout without having to stop and reset the intervals for your next exercise. Pre-program your warm-up, your intervals, your conditioning, and cool-down. Start the clock and let the timer guide you based on your inputs. The example below will illustrate what you can program in a full workout. Warm-up - 5 mins work, 0 mins rest, repeat 1 (in green bar repeat only 1, default setting) Add a section: (This will add a green bar, then program the intervals below in yellow) Skip rope intervals - 30 secs work, 30 secs rest, repeat 10 Rest between exercises - 0 mins work, 2 mins rest, repeat 1 Mountain Climber Intervals - 20 secs work, 10 secs rest, repeat 8 Rest between exercises - 0 mins work, 2 mins Let's say you wanted to repeat this entire cycle 3 times, you would then input 3 in the green bar above. You will cycle through this stack of intervals 3 times before moving on to your next activity. Add a section: Shadowboxing - 3 mins work, 1 min rest, repeat 4 Rest between to put on hand wraps - 0 mins work, 6 mins rest, repeat 1 Heavy bag - 3 mins work, 1 min rest, repeat 6 Rest before next activity - 0 mins work, 3 mins rest, repeat 1 Tabata Punchouts - 20 secs work, 10 secs rest, repeat 8 Let's say for example that you wanted to repeat the above section twice, you could in put 2 in the green bar and you will go through the whole process twice. This would be advantageous if you wanted to do perform a circuit and move from one type of exercise to the next. You could cycle through as many times as you want. Add a Section: Cool down - work 5 mins, rest 0, repeat 1 At the very bottom is the option to repeat the entire cycle. If you wanted to set-up an entire workout that you cycle through twice you could input 2 at the very bottom.
Rollbook
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The simplest way to track your BJJ journey: from white belt to black. Rollbook is the training companion serious grapplers have been waiting for. Log sessions in seconds, build your technique journal, and track every gym you've trained at worldwide. ▸ QUICK SESSION LOGGING No more forgotten training days. Log your rolls with one tap—record duration, training type (gi or no-gi), intensity, and key takeaways. Your entire training history, searchable and organized. ▸ TECHNIQUE JOURNAL That sweep your professor showed? The detail that finally made your armbar click? Capture techniques with notes, tags, and position categories. Never lose another insight from the mat. ▸ GYM PASSPORT Training while traveling? Visiting open mats? Track every academy you've trained at worldwide. Build your grappling passport and see your BJJ journey mapped across the globe. ▸ BELT PROGRESSION TIMELINE Document every stripe and promotion. See your progression visualized—from your first class to your next belt. Set goals and track the hours that matter. ▸ TRAINING STATS & INSIGHTS Weekly, monthly, and yearly breakdowns. Training frequency, favorite gyms, most-practiced techniques. Data that helps you train smarter. Whether you're a fresh white belt or a seasoned competitor, Rollbook keeps your entire jiu jitsu journey in one place—clean, fast, and reliable. Download free and start logging your first session today. Terms of Service: https://rollbook.app/terms/ Privacy Policy: https://rollbook.app/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: Precision Interval Timer at none against Rollbook's 3. Precision Interval Timer also leads on iOS requirement (9.0 vs 15.0). Rollbook's advantage is update cadence (every 10 days vs every 4 months). On price, ads 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. Rollbook sells 3 in-app purchases, starting at $1.99 per month. Precision Interval Timer asks for nothing beyond the download.
Precision Interval Timer ships an update every 4 months, Rollbook every 10 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | Precision Interval Timer | Rollbook |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 131 MB |
| Age rating | 4+ | 4+ |
| Developer | Jason Van Veldhuysen | Philipp Butzmann |
In-app purchases
Precision Interval Timer
No in-app purchases
Rollbook
- RollBook Monthly7 Days trial$1.991 Month
- Rollbook Supporter7 Days trial$14.991 Year
- Rollbook Supporter Lifetime$49.99
Questions
Is Precision Interval Timer free?
Is Rollbook free?
Do Precision Interval Timer or Rollbook have ads?
Which is updated more often, Precision Interval Timer or Rollbook?
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