Comparison

Athalyze vs Water Tracker

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

Head to head
About

Athalyze

Consolidate fitness data from multiple wearables into a single view. Analyze key metrics, compare device accuracy, and track training progress. Offers advanced insights and personalized readiness scores with an optional subscription.

Highlights
  • Multi-device data merging
  • Device priority setting
  • Vitals tracking (HRV, RHR, SpO2)
  • Training Load and Readiness scores
  • Performance analysis and records
  • Route playback with chart sync
Features
Read full description

Athalyze is a training log for athletes who wear more than one device. It runs on iPhone (including iPhone Duo), iPad, Apple Watch and Mac. Run with an Apple Watch and a Garmin, or ride with a bike computer while wearing an Oura ring, and Athalyze merges the recordings into one activity. It works with Apple Watch, Garmin, WHOOP, Oura, Strava, and Google Health devices like Pixel Watch and Fitbit. For each metric it picks the most reliable data, and it keeps the originals so you can see where every number came from. Athalyze is free, with an optional Athalyze Pro subscription for Training Load, Readiness, and deeper analysis. Multi-Device Merging • Recordings of the same workout are combined automatically • Set device priority for each metric if you prefer one source • Compare devices on one chart, each in its own color. Tap a swatch to show or hide it • Import FIT files, including Garmin developer fields like core body temperature • See when a recording switches source, such as heart rate moving from Apple Watch to AirPods Pro • Press play on the map to fly along your route while the charts follow • Two Apple Watches, or a watch and a sleep app like Pillow or AutoSleep, each keep their own heart rate, HRV, sleep and vitals Vitals • Last night's HRV, resting heart rate, respiratory rate, SpO2, skin temperature and sleep on one screen • A Sleep Score for every night, based on how long and how well you slept • Readiness (Pro) gives you a score each morning and suggests how hard to train, using your vitals and your recent training • Choose which device each vital comes from, like HRV from your watch and SpO2 from your ring • HRV is shown as RMSSD, the measure Garmin, Oura and WHOOP use, including Recovery HRV from the newest Apple Watch models. You can also view it as SDNN if your devices record it • Each vital is compared with your own normal range, and you get a morning alert when one falls outside it • Steps and blood glucose are charted against your normal range too Training Load (Pro) • Fitness, Fatigue and Form from every workout, whichever device recorded it • Scored from power, pace or heart rate, with thresholds estimated from your own efforts • Form updates through the day and projects forward to show what a rest day would do Records and Analysis • Best efforts from short intervals to ultra distances, and best power from a few seconds to an hour • Filter by sport and time period • Power and pace curves, with time periods compared on one chart • Correlation heatmaps (Pro) show how two metrics relate, like pace and stride length, and how that has changed between two periods • Histograms (Pro) show how your pace, power, stride length or temperature is distributed, and how that shifts over time Apple Watch • See today's steps against your typical day, plus daily, weekly and monthly trends • Check last night's vitals against your normal range • Follow your training load Fitness, Fatigue and Form (Pro) • Browse recent activities, activity trends and your personal records • Check challenge leaderboards • Put Form on your watch face as a number or a gauge (Pro), and follow a challenge from the Smart Stack Gear and Devices • Track mileage on shoes, bikes and other gear, and see which workouts used each one • Gear rules add your shoes or bike to new activities by sport, type, or sensor • See every device you've used and the activities it recorded • Follow battery levels, and get a notification when a battery runs low Challenges • Step challenges with friends and family, whatever device each person wears • Switch devices during the day and your total stays right. Wearing two at once doesn't count steps twice • Get a notification when your place changes Terms of service: https://www.athalyze.com/terms Privacy policy: https://www.athalyze.com/privacy

About

Water Tracker

Features
Read full description

You know you should drink more water. But here's what most apps won't tell you: not all beverages hydrate you equally. ThisDrinkNow is the first hydration tracker that understands the science behind what you drink. Coffee doesn't hydrate like water. Tea has different effects than soda. Your body knows the difference and now your tracking app does too. SMART TRACKING BASED ON SCIENCE Most water trackers treat every drink the same. ThisDrinkNow uses scientifically-backed hydration factors to calculate your true hydration levels. Track eight different beverage types—water, coffee, tea, soda, juice, milk, energy drinks, and alcohol—with intelligent algorithms that understand how each affects your body. No more guessing. Just accurate, personalized hydration monitoring. PERSONALIZED FOR YOUR BODY Generic advice doesn't work. Our smart calculator analyzes your body weight and recommends a personalized daily goal based on the gold standard: 35ml per kilogram. Real-time progress tracking shows exactly where you stand, while beautiful visualizations keep you motivated. ACHIEVEMENTS THAT MOTIVATE Building habits is hard. We make it rewarding. Unlock achievements as you progress from your first logged drink to maintaining week-long streaks. Watch your streak counter grow. Earn badges for consistency. See progress transform into accomplishments. APPLE HEALTH INTEGRATION Your health data should work together, not live in silos. ThisDrinkNow integrates directly with Apple Health, automatically syncing your water intake with your complete health profile. One ecosystem, complete visibility, zero extra effort. SMART PUSH NOTIFICATIONS Life gets busy. Hydration gets forgotten. Our intelligent push notification system ensures you never go too long without drinking. Customize intervals from 30 minutes to 3 hours. Set your active hours to match your schedule. Get gentle nudges exactly when you need them—and silence when you don't. COMPREHENSIVE INSIGHTS Your hydration history tells a story. See patterns emerge across days, weeks, and months. Export detailed PDF reports for your doctor or personal records. Track consistency with visual progress indicators that make data meaningful at a glance. BEAUTIFUL DESIGN Our gradient design with smooth animations makes tracking effortless. Dark mode ensures comfort in any lighting. Color-coded beverages provide instant recognition. When you hit your goal, confetti celebrations make success feel special. The home screen widget keeps your progress visible without opening the app. PREMIUM FEATURES Custom beverage amounts for precise tracking. Advanced notification scheduling. Priority support. Ad-free experience that respects your time. WHY IT WORKS Most people fail at hydration tracking because apps make it complicated or boring. ThisDrinkNow succeeds because it makes tracking accurate, automatic, and actually enjoyable. Whether you're an athlete optimizing performance, a professional fighting afternoon fatigue, or simply someone who wants to feel better every day, this app meets you where you are. THE BENEFITS ARE REAL Proper hydration isn't a trend—it's fundamental physiology. Better energy. Sharper focus. Improved athletic performance. Healthier skin. Optimal metabolism. These aren't promises; they're documented benefits of maintaining proper hydration levels. Download the app for free and explore limited features. Access full features with a subscription. This app offers auto-renewing subscriptions. Payments will be charged to your Apple ID account at confirmation of purchase. Privacy Policy: https://doc-hosting.flycricket.io/app/3eda98dd-0b07-4f65-9434-fe772dfcc860/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Connect with me: X: https://x.com/w12_dev_apps Instagram: https://instagram.com/w12.devapps Tik Tok: https://tiktok.com/@w12.devapps Youtube: https://youtube.com/@w12.devapps Threads: https://threads.net/@w12.devapps

Screenshots

Athalyze4 screens
Water Tracker4 screens

Verdict

The call

The clearest difference is update cadence: Athalyze at every 10 days against Water Tracker's every 2 months. Athalyze also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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. Athalyze sells 2 in-app purchases, starting at $9.99 per month and Water Tracker sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Athalyze ships an update every 10 days, Water Tracker every 2 months. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

Scorecard2 real differences · 8 level
Athalyze versus Water Tracker: the parameters behind the verdict, then further details
ParameterAthalyzeWater Tracker
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size93 MB26 MB
Age rating4+4+
DeveloperPerimint LLCW12 Consultoria

In-app purchases

2 purchases

Athalyze

Subscriptions2
  • Athalyze Pro (Monthly)1 Month trial$9.991 Month
  • Athalyze Pro (Annual)$99.991 Year
2 purchases

Water Tracker

Subscriptions1
  • Weekly PRO3 Days trial$0.997 Days
One-time1
  • Lifetime$6.99

Questions

Is Athalyze free?
Athalyze is free to download, with in-app purchases available.
Is Water Tracker free?
Water Tracker is free to download, with in-app purchases available.
Do Athalyze or Water Tracker have ads?
Neither Athalyze nor Water Tracker shows ads.
Which is updated more often, Athalyze or Water Tracker?
Athalyze ships an update every 10 days, and Water Tracker every 2 months. Most recently, Athalyze was updated on November 12, 2026 and Water Tracker on November 8, 2026.

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