SparkMove vs Your Stressy
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
SparkMove
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Log strength, runs and walks on iPhone and Apple Watch. Every workout powers your buddy, and a finished workout earns a Fight Charge for an optional boss fight on iPhone. SparkMove turns training into a game you can keep up with. Pick a buddy (Tor for strength, Gust for cardio, Dew for flexibility), train, and watch it evolve through four stages as you earn points, gear and streaks. Then put it to work in the Boss Fight. PLAY THE BOSS FIGHT (IPHONE) โข Finish a workout to earn a Fight Charge, then send your buddy against the Ember Colossus. โข Tor, Dew and Gust each fight with their own moves, and their look changes as they evolve. โข Win shards and spend them in the Ember Forge on looks for your fighter. Cosmetics only, so it never changes your workouts. โข Practice fights are always free. START FAST โข One tap starts your next workout. New here? Your first workout is ready to go. โข Strength and Flex programs with sets, reps, weight and rest timers, plus Digital Crown input on Apple Watch. โข Run and Walk with GPS routes, pace, heart rate and splits. Pause and resume, with haptic taps at every mile or km and when you drift from your target pace. SEE YOUR PROGRESS โข A muscle map shows what you trained and what you skipped. โข Personal records show how much you improved, like 225 lb, up 10 lb. โข Weekly streaks, workout history and shareable stickers for your photos and videos: new bests, level-ups, runs, walks and streaks. MADE FOR APPLE WATCH โข Start and finish workouts from your wrist, even without your iPhone nearby. Everything syncs through iCloud. โข An Up Next card on the Watch start screen, and a SparkMove widget for your watch face and Smart Stack. โข Large, high-contrast live screens built to read mid-run. EARN SOMETHING EVERY SESSION โข Buddy evolution, collectible gear, and rewards for new places you explore on outdoor runs and walks. โข Training Circles: train toward a shared goal with friends. FREE AND TRAINER PASS Your buddy, its evolution, basic gear and the Boss Fight are free. Optional buddy skins (Gale, Geode and Riptide) are one-time purchases. New users get a 14-day trial of Trainer Pass. After that, Trainer Pass adds full report breakdowns (splits, heart rate, pace, elevation), unlimited saved programs (free plan: 3), Coach Mode (real-time weight and rep suggestions that adjust to how each set felt), and creating a Training Circle. Trainer Pass is $4.99 per month or $39.99 per year, auto-renewing. Payment is charged to your Apple ID at confirmation of purchase. The subscription renews unless it is canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel any time in your Apple ID settings. Privacy Policy and Terms: https://nusirichun.github.io/sparkmove-legal/ GOOD TO KNOW โข SparkMove saves workouts to Apple Health and reads heart rate, distance and steps with your permission. Location is used for outdoor route tracking. โข Workouts started on iPhone need iOS 26 or later. On earlier versions, start workouts from your Apple Watch.
Your Stressy
This app transforms your Apple Watch data into a single reserve score, indicating your daily energy levels. It tracks sleep, stress, and activities to provide insights into your body's readiness and fitness.
- Daily reserve score (0-100%)
- Sleep and stress impact tracking
- Activity cost and recharge insights
- Readiness for training predictions
- Body age and cardio fitness calculation
- Sleep summaries with AI insights
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Stressy turns what your Apple Watch already measures into one number: your reserve, from 0 to 100%. Sleep fills it. Stress drains it. Calm slows it down. Glance at your wrist or your iPhone and you know how much you have left today. YOUR MORNING STARTS WITH YOUR NIGHT Deep sleep refills your reserve fastest. Stressy reads how your heart and HRV recovered overnight against your own usual, so a short or restless night starts you lower and a good one starts you high. THROUGH THE DAY Every five minutes, your heart is compared with your own calm. Stress drains the reserve, calm slows the drain, mindful minutes and naps recharge it. Workouts and walks count as effort, never as stress. SEE EXACTLY WHY Today shows your whole day in one curve, your stress every five minutes, every activity with what it cost or gave back, and Behind the number: where yesterday ended, last night's recovery, and where your reserve went since you woke up. LOOK AHEAD โข Readiness: whether today suits hard training, from your reserve, recovery, sleep and recent training. Plan a workout and see tomorrow's wake-up with and without it. โข Bedtime coach: the latest bedtime that still wakes you at 100, 90 or 80%, on a Liquid Glass dial. YOUR WHOLE DAY โข Steps: your steps and distance hour by hour and across the week. โข Workouts: the route on a map, time, distance, pace, heart rate and its zones, and what the workout cost your reserve. โข Stories: turn your steps, sleep or a workout into a video or image for Instagram and anywhere else, made right on your iPhone. YOUR BODY AGE How old your fitness and habits look, in years: your cardio fitness, resting heart rate, steps and sleep, each against what's typical for your age and sex, combined the way researchers build biological age. Every step of the calculation is shown, with the studies behind it. A wellness estimate, not a medical one. YOUR CARDIO FITNESS Stressy calculates your VOโmax itself, from the steady stretches of your runs, walks, hikes and rides and how hard your heart worked against your own maximum, instead of Apple Watch's estimate, which reads low in independent lab studies. Every step is shown. See where you stand for your age and sex, or take the 12-minute Fitness Test on Apple Watch. YOUR NIGHT, EVERY MORNING Wake up to a short sleep summary: time asleep, deep and REM sleep, and how charged you woke up. On the Sleep page, an AI Summary says what the night meant, written by Apple Intelligence right on your iPhone: offline, never in the cloud. Apple Watch has a sleep page of its own, and Sleep widgets put last night on your Home Screen, Lock Screen and watch face. ON YOUR WRIST AND EVERY SCREEN The living tank on Apple Watch, complications and the Smart Stack, plus widgets for your Home Screen and Lock Screen, including today's stress in detail, as bars or as a flowing line, and your steps or distance. MADE FOR iPHONE DUO Open iPhone Duo and your number and your whole day sit side by side: the living tank on one side, Today on the other. Closed, it works like any iPhone. DESIGNED FOR iOS 26 AND LATER A living liquid tank, glass numbers that hold their own liquid, and Liquid Glass throughout. Light and dark appearance, Dynamic Type, VoiceOver and Reduce Motion. PRIVATE BY DESIGN No account. No servers. No analytics. No ads. Your health data is read on your iPhone and Apple Watch and never leaves them. One price, no subscription. WHAT YOU NEED An iPhone and an Apple Watch. Stressy reads sleep, heart rate, heart rate variability, resting heart rate, workouts and their routes, distance, active energy, running speed, cycling power, weight, steps and mindful minutes from Apple Health, plus your age and sex. Wear your watch to sleep for the best results; your personal baseline settles in within about a week. Stressy is a wellness app, not a medical device. Your reserve is an estimate to help you notice how sleep, stress and rest shape your day.
Screenshots
Verdict
The clearest difference is price: SparkMove at Free against Your Stressy's $4.99. SparkMove also leads on iOS requirement (18.0 vs 26.0). Your Stressy's advantage is in-app purchases (none vs 5) and update cadence (daily vs every 5 days). On ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
SparkMove is free to download; Your Stressy costs $4.99 up front. SparkMove sells 5 in-app purchases, starting at $4.99 per month. Your Stressy asks for nothing beyond the download.
SparkMove ships an update every 5 days, Your Stressy daily. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.
| Parameter | SparkMove | Your Stressy |
|---|---|---|
| Price | Free โ better | $4.99 |
| Positive reviews | โ | 100.0% of reviews |
| Update frequency | Every 5 days | Daily โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Monetization | โ | Paid |
| Best chart rank | โ | #149 โ better |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 18.0 โ better | 26.0 |
| Further details โ not scored | ||
| Size | 190 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Nathapon Usirichun | Ervo Labs |
In-app purchases
SparkMove
- Trainer Pass (Monthly)14 Days trial$4.991 Month
- Trainer Pass (Annual)14 Days trial$39.991 Year
- Gust: Gale Skin$2.99
- Tor: Geode Skin$2.99
- Dew: Riptide Skin$2.99
Your Stressy
No in-app purchases









