Comparison

BELIEVR vs INTVL

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

BELIEVR

Features
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Become the athlete you know you can be. Train for your next Running or Triathlon event with clarity, structure, and confidence β€” without your training taking over your life. BELIEVR gives you a fully personalized training plan for your 5K, 10K, Half Marathon, Marathon, or your Sprint-, Olympic-, Middle-, or Long Distance Triathlon, that adapts to your schedule, your progress, and your goals β€” so you always know exactly what to do. Whether it is your first race or you are a seasoned athlete, our BELIEVR Coach guides your training and gives you relevant and useful insights before and after every session. Your training adapts as your life changes, syncs with your devices, and you are able to adjust your plan any time. WHY BELIEVR Traditional training plans are too rigid & complex β€” making training hard to sustain in real life. BELIEVR simplifies everything into a personalized plan that adapts to your fitness, schedule, and race goals β€” built from real-world race experience. BENEFITS OF BELIEVR 1) Personalized Running & Triathlon Training Plan: Structured for your Race, your level, and your goals - based on smart scientific training methods and real event experience Triathlon Plans cover Swim-, Bike-, Run-, and optional Mobility & Strength Sessions. Running Plans cover Run-, Strength & Mobility Sessions. 2) Coach Guidance for every session: Know exactly what to focus on before and after each workout, based on your progress and performance. 3) 24/7 Plan Adjustment: We get it, Life happens. Adjust your plan or move your sessions at any time so you can make progress even if your schedule changes. 4) Seamless Sync with Garmin & Apple Watch Sync your sessions to your device and receive data-driven feedback after every workout. BY ATHLETES, FOR ATHLETES Founded by an Ironman finisher and built to enable athletes to experience the mental and physical transformational power of endurance sport. Train to achieve, while still having a life. GET STARTED TODAY Download BELIEVR and start your personalized running or triathlon training plan today. Try for free for 14 days. If you’re not satisfied, our Happy Athlete 14-Day Guarantee gives you peace of mind β€” you can request a refund from Apple within 14 days of purchase through your App Store account. SUBSCRIPTION DETAILS - Payment is charged via your App Store account - Subscription renews automatically unless canceled - Manage or cancel anytime in your App Store settings β€”β€” Privacy Policy: https://joinbelievr.com/privacy-policy Terms & Conditions: https://joinbelievr.com/terms Support: support@joinbelievr.com β€”β€” Apple Watch & Apple Health: BELIEVR sends your planned sessions to the Workout app on Apple Watch and reads your completed workouts from Apple Health to mark sessions done and analyse them. Sending sessions requires watchOS 11 or later (Apple Watch Series 6 or newer, SE 2nd gen, Ultra).

About

INTVL

Features
Read full description

INTVL is the interval timer built for athletes who demand precision. Whether you're crushing a HIIT session, powering through Tabata rounds, or timing your boxing drills β€” INTVL keeps you in the zone with clear audio cues, voice coaching, and haptic feedback so you never miss a beat. PRECISION TIMER Frame-perfect countdown with color-coded intervals. Large, high-contrast display visible from across the room. Loud audio cues that cut through gym noise. Haptic vibrations so you can feel every transition. Background mode keeps the timer running even when your phone is locked. DRAG & DROP WORKOUT BUILDER Design custom workout sequences with an intuitive drag & drop interface. Add work, rest, prepare, and cooldown phases. Set rounds, adjust durations, and preview your total workout time β€” all before you start. Save unlimited presets for your favorite routines. VOICE COACH Built-in voice coaching announces interval changes, countdowns, and motivational cues. Adjustable speech rate and language-aware β€” speaks in your device language. Train without looking at your screen. WORKOUT LIBRARY Browse preset workouts across HIIT, Tabata, Cardio, Strength, and Yoga categories. Filter by intensity level and duration. Start any workout in seconds, or use presets as templates to customize. QUICK SETUP Not ready for the builder? Use Quick Setup to configure work time, rest time, and rounds in 3 taps. Perfect for simple interval sessions. ANALYTICS & STREAKS Track your workout history with detailed stats. See calories burned, total work time, and rounds completed. Maintain consistency streaks and visualize your weekly training trends. Stay motivated with insights into your progress. DESIGNED FOR FOCUS Pure black OLED-optimized interface designed for zero distraction during intense training. Color-coded phases β€” green for work, blue for rest, yellow for prepare, orange for cooldown β€” let you know what's coming at a glance. BUILT FOR EVERY ATHLETE Perfect for HIIT, CrossFit, Tabata, boxing, MMA, circuit training, running intervals, cycling, rowing, yoga flows, stretching routines, and any activity that needs precise timing. INTVL PRO Unlock the full experience with a free trial: β€’ Unlimited custom timer presets β€’ Full workout library access β€’ Advanced analytics and insights β€’ Priority support Download INTVL and take control of your training. Your next personal best starts now. INTVL Pro – Yearly Subscription - Full access to all features - Unlimited interval workouts & custom timers - Auto-renews yearly – cancel anytime in iPhone Settings Privacy Policy: https://intvltimer.app/privacy-policy Terms of Use (EULA): https://intvltimer.app/terms-of-use

Screenshots

BELIEVR4 screens
INTVL4 screens

Verdict

The call

The clearest difference is ads: BELIEVR at none against INTVL's shown. BELIEVR also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. BELIEVR sells 4 in-app purchases, starting at $14.99 per month and INTVL sells 1 in-app purchase, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BELIEVR ships an update every 9 days, INTVL fortnightly. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

Scorecard3 real differences Β· 3 level
BELIEVR versus INTVL: the parameters behind the verdict, then further details
ParameterBELIEVRINTVL
PriceFreeFree
Update frequencyEvery 9 days β€” betterFortnightly
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS15.1 β€” better17.0
Further details β€” not scored
Size57 MB87 MB
Age rating17+4+
DeveloperNiklas SeiboldImperial Sales & Marketing GmbH

In-app purchases

4 purchases

BELIEVR

Subscriptions4
  • BELIEVR PRO Founding Monthly14 Days trial$14.991 Month
  • BELIEVR PRO Monthly14 Days trial$17.991 Month
  • BELIEVR PRO Founding Yearly14 Days trial$89.991 Year
Show 1 more
  • BELIEVR PRO Yearly14 Days trial$99.991 Year
1 purchases

INTVL

Subscriptions1
  • INTVL Pro Annual7 Days trial$39.991 Year

Questions

Is BELIEVR free?
BELIEVR is free to download, with in-app purchases available.
Is INTVL free?
INTVL is free to download, with in-app purchases available.
Do BELIEVR or INTVL have ads?
INTVL shows ads; BELIEVR does not.
Which is updated more often, BELIEVR or INTVL?
BELIEVR ships an update every 9 days, and INTVL fortnightly. Most recently, BELIEVR was updated on October 24, 2026 and INTVL on October 10, 2026.

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