Comparison

Round vs Session

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

Session

Features
Read full description

Session is the interval training timer that adapts to YOUR sport. Whether you're running, doing HIIT, Tabata, or any other interval-based workout, Session lets you build fully customized sessions: number of reps, duration of each phase, type of effort (sprint, recovery, endurance, exercise, prep). WHY SESSION? 100% custom sessions — create as many phases as you want, in whatever order you want Real-time visual timeline — see exactly where you are in your session at a glance Customizable alerts — sound, vibration, or voice guidance to stay focused without looking at your screen Works with locked screen — start your session, pocket your phone, go Music-friendly — alerts play clearly even over your playlist No sign-up required — open the app and start, no account needed Free, no ads, no in-app purchases WHO IS IT FOR? Runners, athletes in physical training, interval trainers, HIIT and Tabata practitioners, or anyone who needs a reliable, simple interval timer. Your data stays on your phone. No account, no ad tracking. Your sport. Your pace. Your Session.

Screenshots

Round4 screens
Session4 screens

Verdict

The call

The clearest difference is update cadence: Session at every 4 days against Round's weekly. Session also leads on iOS requirement (15.6 vs 17.2). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Round ships an update weekly, Session every 4 days. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 7 level
Round versus Session: the parameters behind the verdict, then further details
ParameterRoundSession
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.215.6 — better
Further details — not scored
Size34 MB38 MB
Age rating4+4+
DeveloperRyosuke NakayamaVincent DOLLO

In-app purchases

None

Round

No in-app purchases

None

Session

No in-app purchases

Questions

Is Round free?
Round is free to download, with no in-app purchases.
Is Session free?
Session is free to download, with no in-app purchases.
Do Round or Session have ads?
Neither Round nor Session shows ads.
Which is updated more often, Round or Session?
Round ships an update weekly, and Session every 4 days. Most recently, Round was updated on September 24, 2026 and Session on September 19, 2026.

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