Comparison

Round vs Interval Timer (Simple)

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

Head to head
About

Round

This interval timer is designed for high-intensity interval training (HIIT), Tabata, and circuit workouts. It allows users to create custom routines with multiple exercises and track their progress. The app offers haptic alerts and can be controlled from an Apple Watch.

Highlights
  • Customizable interval routines
  • HIIT, Tabata, and circuit training support
  • Apple Watch control
  • Haptic alerts for round changes
  • Visual arc timer
  • Workout progress tracking
  • Apple Health integration
Features
Read full description

Round is a visual interval timer for HIIT, Tabata, circuit training, strength workouts, mobility, and stretching. TRAIN WITH 3D MOVEMENT GUIDES Choose from 71 exercises and see each movement in 3D while building your routine and while the timer runs. Side-specific and alternating exercises are handled clearly, so you always know what comes next. BUILD A ROUTINE IN SECONDS • Start with a ready-made template or build from the exercise catalog • Reorder, duplicate, edit, and delete steps directly • Add custom exercises with your own name and emoji • Set work, step rest, set rest, preparation, and number of sets STAY FOCUSED • Follow the 3D animation or switch to a larger remaining-time display • See your current step, progress, and upcoming lineup at a glance • Audio and haptic cues announce every transition WORKS WITH WATCH Control your workout from your wrist and receive haptic cues without reaching for your iPhone. TRACK YOUR PROGRESS • Sessions are logged automatically • Review total training time, streaks, and your most-used routines • Save workouts to Apple Health • Delete individual history entries whenever needed No account. No ads. Fully offline.

About

Interval Timer (Simple)

Features
Read full description

Why are all these interval timers so complicated? Ain't nobody got time for that. Stupid simple interval timer. Set interval. Toggle sound. Get to work. EXOX timer (Every X On The X).

Screenshots

Round4 screens
Interval Timer (Simple)3 screens

Verdict

The call

The clearest difference is in-app purchases: Round at none against Interval Timer (Simple)'s 1. Interval Timer (Simple)'s advantage is iOS requirement (15.1 vs 17.2). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer (Simple) sells 1 one-off in-app purchase. Round asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 24, 2026 and September 5, 2026 respectively.

Scorecard2 real differences · 7 level
Round versus Interval Timer (Simple): the parameters behind the verdict, then further details
ParameterRoundInterval Timer (Simple)
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.215.1 — better
Further details — not scored
Size34 MB28 MB
Age rating4+4+
DeveloperRyosuke NakayamaDomett Xing

In-app purchases

None

Round

No in-app purchases

1 purchases

Interval Timer (Simple)

One-time1
  • Lifetime Purchase$6.99

Questions

Is Round free?
Round is free to download, with no in-app purchases.
Is Interval Timer (Simple) free?
Interval Timer (Simple) is free to download, with in-app purchases available.
Do Round or Interval Timer (Simple) have ads?
Neither Round nor Interval Timer (Simple) shows ads.
Which is updated more often, Round or Interval Timer (Simple)?
Round ships an update weekly, and Interval Timer (Simple) weekly. Most recently, Round was updated on September 24, 2026 and Interval Timer (Simple) on September 5, 2026.

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