PB Intervals vs Power Nap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PB Intervals
This app offers a high-precision interval and reaction timer designed for various workouts and training needs. It allows users to create custom sessions, randomize elements, and share their routines. Ideal for athletes, trainers, and fitness enthusiasts seeking accurate timing and dynamic training.
- Zero time drift for accurate timing
- In-app session creator
- Interval and reaction timers
- Randomize workout elements
- Customizable alerts and messages
- Share and import workouts via CSV
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PB Intervals™ is a high precision (zero time drift), easy to use interval & reaction timer. Whether you're smashing HIIT/HIRT/SIT workouts, perfecting your striking combos, hitting some zone 6/7 efforts, or guiding patients through rehab, PB Intervals™ is a bit like that evil coach; you love them because they're so good...but also kinda hate them because they're so good. DESIGNED FOR PROS, PERFECTED FOR EVERYONE Born from frustration with drifting timers & subscription-based apps, PB Intervals™ brings elite sports experience to athletes of all levels. KEY FEATURES - Zero Time Drift: Whether you’re cycling, boxing, or doing a beep test, say goodbye to inaccurate timing - In-App Session Creator: Easily design your workouts on the go - Interval & Reaction Timers: Sharpen your reflexes with our built-in reaction timer - Randomise Everything: Mix up interval order, rest periods, & durations. Keep your body guessing & your mind engaged - Customisation: Colour-code intervals, set spoken alerts, add motivational messages within intervals. Make your timer as unique as your workout style - Share Your Workouts: Share workouts with friends or clients with an easy export function - CSV Import Function: Import custom workouts via CSV. No more tedious manual entry on a small screen PERFECT FOR: - HIIT Enthusiasts - Cycling Coaches - Martial Artists - Personal Trainers - Physio & OT - Sports Reflex Trainers - Group Fitness Instructors - Athletes in Training - Home Fitness Warriors FAQs Q: Is it a subscription thing? A: Nope. We keep it simple: enjoy the free version with essential features, or make a one-time, small payment for the full version. No recurring charges, just support towards your personal best. Q: What do I get if I buy it? A: The full version unlocks all the goodness. You'll get unlimited saved timers (instead of just 3), the ability to enable hundredths of a second input & display (good for beep tests etc.), plus import & share options (& we'll install many of the timers available on the resources page of the website (yes; this does include the beep test)). It's everything in the free version, but super charged. Q: What’s a Reaction session? A: Reaction sessions spice things up with random interval calls. They're great for sharpening your reflexes in martial arts or boxing, or for creating dynamic workouts for rehab; it can be like those fancy light reaction training tools, but using just your phone & some everyday objects. Again, it's just like having a personal coach calling things out, only with this session, you don't know what they're going to call, or for how long. Q: Is there a free trial? A: There isn't a free trail, but the free version (without ads) lets you test drive the core features. Q: How do I share things? A: On the Home screen or in a folder, hit the edit button in the bottom left. Select the workout(s) you want to share, tap the share button in the top right, & voila! Q: How do I import sessions? A: Easy peasy...Start creating a new workout, scroll to the bottom, & tap ‘Import from CSV’. Just make sure your .csv file is formatted correctly before importing. IMPORTANT NOTE Your safety is the top priority. Before diving into any new workout routine: - Consult with your doctor, especially if you have any health conditions or injuries. - Listen to your body & adjust as needed. - Remember, you’re responsible for your own safety during workouts. - Our routines are offered as-is & may not be suitable for all fitness levels. By using PB Intervals™, you agree to these terms. Train smart, push your limits safely, & most importantly, enjoy it... even if (when) it becomes type 2 fun. Privacy Policy: https://www.pbintervals.app/privacy-policy-ios Terms & Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Power Nap
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Stop wasting time being tired. Power Nap is the smart napping app built for people who push their limits and need to recover fast. SMART WAKE TECHNOLOGY Power Nap uses your phone's motion sensors to detect your sleep state and wake you at the optimal moment—before you fall into deep sleep. No more groggy wake-ups. Just clean, efficient rest. THREE NAP MODES • Power Nap (20 min) — Quick boost, wake before deep sleep • Recovery Nap (45 min) — Deep recovery for hard training days • Full Sleep Cycle (120 min) — Complete cycle with REM AMBIENT SOUNDS Drift off faster with built-in sounds—rain, ocean waves, white noise, and more. Sounds fade automatically as you drift off. GENTLE ALARMS Wake up gradually with soft, pleasant tones designed to ease you back to alertness. TRACK YOUR PROGRESS Monitor your nap streaks and build a recovery habit that sticks. WHY NAP? Research shows strategic napping improves focus, reaction time, memory, and athletic recovery. The most productive people in the world nap. Now you can too—smarter. Built by Impossible. Because recovery is part of the work.
Screenshots
Verdict
The clearest difference is price: PB Intervals at Free against Power Nap's $4.99. PB Intervals also leads on iOS requirement (15.0 vs 17.0). Power Nap's advantage is in-app purchases (none vs 1) and update cadence (every 4 months vs every 15 months). On 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
PB Intervals is free to download; Power Nap costs $4.99 up front. PB Intervals sells 1 one-off in-app purchase. Power Nap asks for nothing beyond the download.
PB Intervals ships an update every 15 months, Power Nap every 4 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | PB Intervals | Power Nap |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 2.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 15 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Creative Banks Ltd | Impossible X LLC |
In-app purchases
PB Intervals
- PB Interval Premium$6.99
Power Nap
No in-app purchases









