Comparison

Interval Timer vs Yollo

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

Head to head
About

Interval Timer

Organize your running and high-intensity interval training sessions with ease. Quickly set up custom time intervals for running, walking, warm-ups, and cool-downs. Receive voice and vibration notifications for interval changes, and enjoy background music playback.

Highlights
  • Intuitive design
  • Customizable time intervals
  • Warm-up and cool-down timers
  • Voice and vibration notifications
  • Background music support
  • Foreground/background operation
Features
Read full description

Create custom run-walk intervals, HIIT sessions, and cardio workouts in seconds. Train with voice announcements and haptic cues, control workouts from Apple Watch, save sessions to Apple Health, and track your workout history. Set your intervals, hit Start, and focus on your workout—not the clock. CREATE YOUR CUSTOM WORKOUTS • Build warm-up, running, walking, and cool-down intervals • Customize each interval duration and repeat cycle for any training goal • Save multiple custom workouts for quick access • Preview your full workout before you start • Relaunch your favorite sessions in just a few taps STAY IN THE FLOW • Hear clear voice announcements at every interval transition • Feel haptic cues when it’s time to change pace • Keep your workout running while your iPhone is locked or the app is in the background • Listen to music, podcasts, or audiobooks while you train TRAIN WITH APPLE WATCH • Sync your custom workouts to Apple Watch • Start, control, and monitor workouts directly from your wrist • Train phone-free with workouts ready on your Watch • Track heart rate, distance, and active energy during your workout • Save completed workouts to Apple Health TRACK YOUR PROGRESS • Browse completed workouts in calendar and history views • Review total duration, intervals, distance, and active energy • Look back at your training over time • Share your workout results • Export and restore backups of your workout data BUILT FOR EVERY WORKOUT Whether you're starting a beginner run-walk program, adding sprint intervals to your training, preparing for a race, or building a focused HIIT session, Interval Run keeps you on track from the first interval to the last. Create your workout. Start running. Let Interval Run handle the timing. Some features shown, including multiple workouts and full workout history, require Interval Run Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Yollo

This app helps you create custom interval running routines with adjustable voice guidance. It also features social connections, appointment scheduling for runs, and integration with health data.

Highlights
  • Customizable interval running courses
  • Adjustable voice guidance frequency
  • Music playback without interruption
  • Run appointment scheduling
  • Follow nearby runners
  • Direct messaging with connections
Features
Read full description

*The best interval running timer app Yollo that provides you with the best running experience! - An app that allows you to set up the optimal interval running courses and adjust the frequency of voice guidance for your needs. *Clean Voice Coaching Running App - A running app with a no-frills voice coach that allows you to run while listening to music uninterrupted. *Appointments - A way to not procrastinate running! - Make appointments to run at the same time at your respective locations. *Social - Follow nearby runners and stimulate your running instincts. *Dating - If you follow each other, you can chat. Yollo Subscription • Get customized interval runs even after free use of 1 month. • Unlimited access to view runner profiles. • Unlimited access to view distance/rankings on the ranking list. • Create appointments with others without restriction. • Create clubs without restriction. • Invite club members without restriction. Yollo uses HealthKit to export your Yollo activities to the Health app and read heart rate and biometric data. You can subscribe and pay through your iTunes account. Payment will be charged to your iTunes account at confirmation of purchase. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renew may be turned off after purchase by going to the 'Manage Subscription' page in settings. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. The subscription will renew at the same cost. Terms of Service: https://support.yolloapp.com/terms Privacy Policy: https://support.yolloapp.com/

Screenshots

Interval Timer4 screens
Yollo4 screens

Verdict

The call

The clearest difference is review sentiment: Yollo at 74% against Interval Timer's 21%. Yollo also leads on rating (5.0 vs 4.5) and update cadence (every 4 weeks vs every 3 months). Interval Timer's advantage is ratings volume (534 vs 15). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $2.99 per month and Yollo sells 2 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Yollo holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Interval Timer has 534 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 21% of Interval Timer's written reviews are positive against 74% of Yollo's.

UpkeepUpdate frequency

Interval Timer ships an update every 3 months, Yollo every 4 weeks. The most recent releases landed on September 1, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Interval Timer versus Yollo: the parameters behind the verdict, then further details
ParameterInterval TimerYollo
PriceFreeFree
Rating4.5 (534 ratings)5.0 (15 ratings) — better
Positive reviews21.1% of reviews74.2% of reviews — better
Number of ratings534 — better15
Update frequencyEvery 3 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS26.014.0 — better
Further details — not scored
Size11 MB203 MB
Age rating4+4+
DeveloperRoma SosnovskyStudio Y Inc.

Customer experience

Interval Timer

All ratings534 ratings
Positive86.9%
Neutral3.4%
Negative9.7%
Written reviews95 reviews
Positive21.1%
Neutral8.4%
Negative70.5%

Yollo

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews31 reviews
Positive74.2%
Neutral9.7%
Negative16.1%

Bugs and requests

Interval Timer

Reported bugs

4 issues
  • Timer resets or freezes during workout
  • Prompts not working when phone is locked or in pocket
  • Unexpected interval changes or duration changes
  • Compatibility issues with music playback

Requested features

6 requests
  • Option to pause/resume timer
  • Larger time remaining display
  • Apple Watch app
  • Ability to play audio prompts even with screen off
  • More interval options (run/walk/jog)
Show 1 more
  • Congratulatory audio cue at the end

Yollo

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Interval Timer

Subscriptions2
  • Interval Run Pro Monthly$2.991 Month
  • Interval Run Pro Annual7 Days trial$19.991 Year
One-time1
  • Full Version$2.99
2 purchases

Yollo

Subscriptions1
  • Yearly Subscription$39.991 Year
One-time1
  • Coach$1.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Yollo free?
Yollo is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or Yollo?
Yollo is rated higher. Interval Timer averages 4.5 out of 5 from 534 ratings, while Yollo averages 5.0 from 15 ratings.
Do Interval Timer or Yollo have ads?
Neither Interval Timer nor Yollo shows ads.
Which is updated more often, Interval Timer or Yollo?
Interval Timer ships an update every 3 months, and Yollo every 4 weeks. Most recently, Interval Timer was updated on September 1, 2026 and Yollo on September 18, 2026.

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