Comparison

Round vs Fit Chronos

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

Fit Chronos

Features
Read full description

# Fit Chronos **Turn every workout into performance!** Do you spend more time looking for your timer than actually training? Fit Chronos is the smart fitness timer that keeps you focused on what matters most: move, improve, and beat your records. ## Professional Timer - High-precision stopwatch with 100 ms refresh rate. - Custom countdown from 5 seconds to 10 minutes. - Adjust duration during a cycle or for the next one. - Multi-sensory alerts: sound, 2-second vibration, and LED flash. - Independent configuration for each exercise type. ## Training Modes - **Workout (Strength Training):** configurable sets, reps, and rest time. - **Stretch:** activity/rest cycles for dynamic stretching. - **Flexibility:** custom stretching routines. - **Exercises:** general training with timer. ## Tracking & Statistics - Automatic recording of every session. - Total duration, active time, rest time, and efficiency ratio. - Full history with interactive charts. - Full-screen view to analyze your progress. - Custom notes for each session. ## Custom Alerts - Built-in sound for transition beeps. - Configurable vibration. - LED flash, depending on device availability. - Enable or disable each alert type by mode. ## Cloud Sync *Optional — available with DevLife packs.* - Automatic backup to MIT-DevLife. - Access your data across multiple devices. - Personalized AI insights based on your performance. - PDF export of your statistics. ## Security - Passkey authentication, including biometrics and security keys. - Local data stored in SQLite. - Privacy respected 100%. ## Languages - Full interface available in French and English. - Instant language switching in settings. Whether you do strength training, HIIT, stretching, or cardio, Fit Chronos is the training companion that never lets you down. Download it now and start improving!

Screenshots

Round4 screens
Fit Chronos4 screens

Verdict

The call

The clearest difference is in-app purchases: Round at none against Fit Chronos's 1. Round also leads on update cadence (weekly vs every 3 months). Fit Chronos's advantage is iOS requirement (15.0 vs 17.2). On price, 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. Fit Chronos sells 1 one-off in-app purchase. Round asks for nothing beyond the download.

UpkeepUpdate frequency

Round ships an update weekly, Fit Chronos every 3 months. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 6 level
Round versus Fit Chronos: the parameters behind the verdict, then further details
ParameterRoundFit Chronos
PriceFreeFree
Rating4.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.215.0 — better
Further details — not scored
Size34 MB66 MB
Age rating4+4+
DeveloperRyosuke NakayamaMathieu Dupleix

In-app purchases

None

Round

No in-app purchases

1 purchases

Fit Chronos

One-time1
  • Premium$3.99

Questions

Is Round free?
Round is free to download, with no in-app purchases.
Is Fit Chronos free?
Fit Chronos is free to download, with in-app purchases available.
Do Round or Fit Chronos have ads?
Neither Round nor Fit Chronos shows ads.
Which is updated more often, Round or Fit Chronos?
Round ships an update weekly, and Fit Chronos every 3 months. Most recently, Round was updated on September 24, 2026 and Fit Chronos on September 13, 2026.

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