PB Intervals vs Interval Randomizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PB Intervals
Read full descriptionHide full description
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/
Interval Randomizer
Read full descriptionHide full description
Train without falling into a predictable rhythm. Interval Randomizer creates changing work intervals inside the minimum and maximum range you choose. Set your timing, recovery and workout duration, then let every round develop differently. RANDOMIZED TRAINING - Random work intervals inside your selected range - Adjustable minimum and maximum work time - Custom recovery periods - Configurable total workout duration - Large live timer with clear work and recovery phases BUILT FOR SERIOUS TRAINING - HIIT workouts - Boxing and combat sports - Tabata sessions - MMA and martial arts conditioning - Sparring drills - Cardio and reaction training STAY CONSISTENT - Daily Challenges - Training streaks - XP and levels - Coins and rewards - Session statistics - Training-minute tracking - Save your favorite workout setups FAST DURING A WORKOUT The main controls stay visible so you can change your workout without digging through menus. Clear colors identify work, recovery, timing and progress at a glance. MADE FOR IPHONE AND IPAD Interval Randomizer includes dedicated layouts for iPhone and iPad, giving each device the space and controls appropriate for training. The core timer and Daily Challenges are free. Optional advertising supports continued development, with an available upgrade to remove ads.
Screenshots
Verdict
The clearest difference is in-app purchases: Interval Randomizer at none against PB Intervals's 1. PB Intervals's advantage is iOS requirement (15.0 vs 18.2). 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. PB Intervals sells 1 one-off in-app purchase. Interval Randomizer asks for nothing beyond the download.
| Parameter | PB Intervals | Interval Randomizer |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 12 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Creative Banks Ltd | Hitfire Production AB |
In-app purchases
PB Intervals
- PB Interval Premium$6.99
Interval Randomizer
No in-app purchases
Questions
Is PB Intervals free?
Is Interval Randomizer free?
Do PB Intervals or Interval Randomizer have ads?
Other comparisons















