Sonar Fit vs Riven
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonar Fit
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Train smarter. Move better. Track every rep effortlessly. Sonar Fit turns your Apple Watch and AirPods Pro into intelligent workout companions, using built-in motion sensors and AI to automatically count reps, track sets, and optimize your rest — so you can focus on lifting, not logging. WHAT IS SONAR FIT Sonar Fit is a next-generation strength training app designed for iPhone and Apple Watch. It uses real-time motion data and machine learning to automatically detect your reps, sets, and rest periods — hands-free. Whether you’re doing squats, deadlifts, presses, or curls, Sonar Fit recognizes your movements and keeps track of your workout without needing to tap your watch or phone. It even uses your AirPods Pro (2nd Gen or newer) for head-motion tracking if you’re not wearing your watch. KEY FEATURES - Automatic Rep Counting – No manual input required. Your Watch or AirPods detect each clean rep. - Real-Time Feedback – Instantly see your progress on Watch or iPhone during a workout. - Hands-Free Rest Timer – Rest starts automatically when your set ends. - Smart Set Tracking – View reps, sets, and history without lifting a finger. - Watch and AirPods Support – Use either device, or both. You choose. WHO IT’S FOR Sonar Fit is built for people who lift: - In home gyms or commercial gyms - Without a training partner - Who want to avoid tapping screens mid-set - Who care about form, focus, and tracking their progress over time WHY SONAR FIT IS DIFFERENT Unlike traditional fitness trackers or rep counters, Sonar Fit doesn’t rely on you to manually press buttons or enter numbers. Instead, it uses sensor data from your Apple Watch or AirPods Pro to recognise reps and intelligently guide your rest. We believe in frictionless training. No distractions. No guesswork. Just better sessions. DEVICE COMPATIBILITY - Apple Watch Series 6 or newer is recommended for best motion accuracy. - AirPods Pro (2nd Gen or newer) & AirPods Max are supported for head motion tracking. - iPhone required to install the Watch app. - Requires iOS 17+ and watchOS 10+. PRIVACY-FIRST We don’t sell your data — and your workouts stay securely stored in your private account. GET STARTED FREE Sonar Fit is free. Just install the app, connect your Apple Watch or AirPods, and start moving. QUESTIONS OR FEEDBACK? We’re always improving. If you have questions, feedback, or want to request a feature, get in touch at help@sonar.fit Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Riven
This app automatically detects and counts your exercise repetitions and measures how close you are to muscle failure during each set. It provides instant feedback with a score and color-coded tiers, helping you optimize your training for muscle growth. Requires an Apple Watch and iPhone.
- Auto-counts reps without manual input
- Auto-detects over 30 exercises
- Scores sets for muscle failure proximity (0-100)
- Color-coded feedback tiers
- Weekly per-muscle failure summary
- Automatic workout logging to Apple Health
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Your dream physique is built on muscle failure. We turn your Apple Watch into an automatic workout tracker. It starts your sets, counts your reps, names the exercise and measures how close each set came to muscle failure. No buttons, no phone, no logging between sets. FULLY AUTOMATIC ◆ Starts sets: Riven sees when a set starts and when it ends. Nothing to start or stop. ◆ Counts reps: every rep is counted from your wrist as you do it. ◆ Names exercises: 100+ exercises supported, and the most common lifts are recognized on their own, including bench press, squat, curls, rows, pulldowns and lateral raises. ◆ Measures muscle failure: the moment you rack the weight, your set gets a score from 0 to 100 for how close you came to muscle failure. ◆ Scores every muscle: see which muscle groups reached muscle failure in each workout. ◆ Syncs with Apple Health: sets, reps, exercises and scores are saved on their own. SHARE YOUR WORKOUTS ◆ Post to the feed: share any workout, with the muscles you took to muscle failure, and get kudos and comments from other lifters. ◆ Weekly league: see where your average muscle failure score ranks against lifters worldwide, and join challenges. ◆ Your choice: make your profile private any time, and report or block anyone. WHAT IS MUSCLE FAILURE? It's the rep you can't finish. Muscle grows when you train close to it, but most lifters stop a few reps short and never know it. Riven tells you after every set, in colors you can read at a glance: Red: stopped short Orange: working Yellow: near muscle failure Green: muscle failure HOW IT MEASURES MUSCLE FAILURE Your Apple Watch reads your wrist's motion 100 times a second. As a muscle tires, your reps slow down. Riven measures that slowdown, called velocity loss, which is the best-studied sign of fatigue in strength training. Heart rate is saved to your log, but it isn't part of the score. NOTHING EXTRA No camera, no barbell clip, no chest strap. Works with barbells, dumbbells, cables and machines, using the watch you already wear. REQUIREMENTS Apple Watch Series 6 or later (watchOS 10+), paired with an iPhone on iOS 17 or later. Detection, counting and scoring run on the watch. The iPhone app handles setup, history and plans. PRIVACY Motion is processed on your devices. No ads. No third-party trackers. Full policy at riven.fit/privacy. PLANS ◆ Free: 1 workout per week, forever. ◆ Unlimited: no weekly limit, monthly or yearly. Prices are shown in the app for your region. Payment is charged to your Apple ID when you confirm your purchase. Subscriptions renew automatically unless turned off at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. You can manage or cancel subscriptions in your Apple ID account settings. Privacy: riven.fit/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms: riven.fit/terms
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Verdict
Sonar Fit and Riven are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sonar Fit sells 2 in-app purchases, starting at $3.99 per month and Riven sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Sonar Fit ships an update every 2 weeks, Riven every 10 days. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.
| Parameter | Sonar Fit | Riven |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Floxx Labs | Bara Bilal |
In-app purchases
Sonar Fit
- Unlimited Access$3.991 Month
- Unlimited access$29.991 Year
Riven
- Pro Monthly7 Days trial$2.991 Month
- Unlimited Monthly7 Days trial$4.991 Month
- Pro Yearly7 Days trial$29.991 Year
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- Unlimited Yearly7 Days trial$39.991 Year
- Unlimited Lifetime$99.99
Questions
Is Sonar Fit free?
Is Riven free?
Do Sonar Fit or Riven have ads?
Which is updated more often, Sonar Fit or Riven?
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