Comparison

Core vs Round Timer

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

Head to head
About

Core

This app helps you stay focused during workouts by managing intervals, work times, and rest periods with clear visual and audio cues. Save custom routines for HIIT, Tabata, or boxing, and track your training history to monitor progress.

Highlights
  • Customizable interval timers
  • Audio cues for work/rest phases
  • Save and reuse workout routines
  • Visual countdown and color coding
  • Workout history and trend tracking
  • Optional Pro features via in-app purchase
Features
Read full description

Keep your focus on the workout Core takes care of the intervals, so you can stay with your training. Set your work time, rest time and sets, then follow a clear countdown and audio cues from the first round to the last. Made for your routine Build a timer for HIIT, Tabata, circuit training or boxing rounds. Save your usual workouts and have them ready when it is time to train again. Know when to move and when to recover A large countdown and distinct work and rest colors make each phase easy to recognize at a glance. Choose audio cues that suit the way you train. See the work you have put in Revisit completed sessions and see your weekly training trends. Your training history gives every session a place beyond the final countdown. Go further with Core Pro Unlock unlimited timers and duplicates, full workout history, monthly and yearly trends, and CSV export. These features require an in-app purchase. Core Pro is optional. Available plans and prices are shown before purchase. If you choose an auto-renewable subscription, payment is charged to your Apple Account at confirmation. It renews automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in your App Store account settings. Privacy policy: https://yating-900.github.io/core-timer-site/privacy.html Terms of use: https://yating-900.github.io/core-timer-site/terms.html If you have any ideas to improve the App, please contact us via coretimerapp@gmail.com. Your feedback is highly valued!

About

Round Timer

This interval timer offers extensive customization for workouts, training, or any timed activity. Features include custom presets, sound libraries, voice announcements, and detailed session tracking. Enjoy an intuitive, ad-free experience designed for flexibility.

Highlights
  • Customizable colors
  • Custom presets
  • Rich sound library
  • Voice announcements
  • Proximity sensor support
  • Shake-to-pause
  • Detailed session summaries
Features
Read full description

Round is the ultra-customizable interval timer designed to supercharge anything you do. It’s packed with features like customizable colors, custom presets, a rich library of sounds, voice announcements, proximity sensor support, shake-to-pause, and precise time entry. Track your sessions with detailed summaries, enable tick sounds, and enjoy an intuitive, ad-free interface. Perfect for any activity, from sports to work.

Screenshots

Core4 screens
Round Timer4 screens

Verdict

The call

Core and Round Timer both sit at 5.0 stars, but that hides the real split: 100% of Core's written reviews are positive against 67% of Round Timer's. Round Timer's advantage is update cadence (every 2 weeks vs every 33 months) and monetization model (free vs freemium). On price, rating, ads and in-app purchases 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. Core sells 3 in-app purchases, starting at $1.99 per month and Round Timer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Core against 4.9 for Round Timer. Both are backed by a comparable volume of ratings — 4 and 14 respectively. Written reviews are what separate them: 100% of Core's written reviews are positive against 67% of Round Timer's.

UpkeepUpdate frequency

Core ships an update every 33 months, Round Timer every 2 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Core versus Round Timer: the parameters behind the verdict, then further details
ParameterCoreRound Timer
PriceFreeFree
Rating5.0 (4 ratings) — better4.9 (14 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings414 — better
Update frequencyEvery 33 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size9 MB18 MB
Age rating4+4+
DeveloperYating LuYauhen Bahdanovich

Customer experience

Core

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Round Timer

All ratings14 ratings
Positive92.9%
Neutral7.1%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

3 purchases

Core

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$9.991 Year
One-time1
  • Lifetime$14.99
1 purchases

Round Timer

One-time1
  • Round Pro$0.99

Questions

Is Core free?
Core is free to download, with in-app purchases available.
Is Round Timer free?
Round Timer is free to download, with in-app purchases available.
Which has better reviews, Core or Round Timer?
Core is rated higher. Core averages 5.0 out of 5 from 4 ratings, while Round Timer averages 4.9 from 14 ratings.
Do Core or Round Timer have ads?
Neither Core nor Round Timer shows ads.
Which is updated more often, Core or Round Timer?
Core ships an update every 33 months, and Round Timer every 2 weeks. Most recently, Core was updated on October 30, 2026 and Round Timer on October 24, 2026.

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