Comparison

Health Sync by appyhapps vs Rack

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

Head to head
About

Health Sync by appyhapps

This app facilitates seamless data synchronization between various health and fitness platforms. It supports a wide range of popular services, allowing you to consolidate your health metrics. Enjoy automatic background syncing and a privacy-focused approach with on-device processing.

Highlights
  • Syncs data between numerous health platforms
  • Supports Apple Health, Garmin, Strava, and more
  • Automatic background syncing
  • On-device data processing for privacy
  • One-time purchase for lifetime license
  • Historical data sync option
Read full description

Health Sync seamlessly syncs your data between health and fitness platforms. • SYNC FROM: Apple Health, Coros, Google Health (Fitbit), Garmin Connect, HUAWEI Health, Oura, Polar Flow, Strava, and Suunto. • SYNC TO: Apple Health, Coros, Google Health (Fitbit), Guava, HUAWEI Health, Intervals.icu, Runalyze, Selfloops, Strava, Suunto, and TrainItAll. It will sync data from the time you first use the app. Historical data (all data before the day of installation) can be synced after the free trial period. With Garmin Connect you can sync the last five years of activity data, and the last two years of other data (steps, sleep, heart rate etc.). With Polar Flow you can't sync historical data. The sync runs automatically in the background a few times per hour (due to iOS restrictions on background processes). Activity GPS data is synced to Apple Health when the phone screen is unlocked. If activity data is synced while the phone is locked, Health Sync will add the GPS data to the Apple Health workout data the next time you open the Health Sync app. Syncing from Apple Health requires your phone to be unlocked. Health Sync is very easy to use. It offers a one-week free trial period. After the trial period, you can make a one-time purchase (lifetime license) to continue using the app and access the historical data sync option. Try the app and see if it fits your needs. The data you can sync depends on the source app from which you sync data and the destination app(s) to which you sync the data. Health Sync uses a privacy-by-design approach. The sync processes data on your phone, not on cloud servers. Your data won't be used and can't be accessed by others. Read the privacy policy for details. Syncing between health data apps sometimes doesn't work as expected. Don't worry; almost all issues can be solved easily. You can check the Help Center menu in Health Sync. If you can't resolve the issue, you can send a Health Sync problem report (the last option in the Help Center menu) or email info@appyhapps.nl. You will receive support to solve the sync issue.

About

Rack

Log your weightlifting sets and reps directly from your wrist, even offline. Plan workouts on your phone and execute them with your paired smartwatch. Track runs and cardio sessions, and visualize your progress with detailed charts and recovery insights.

Highlights
  • Log sets and reps from your wrist
  • Plan workouts on phone, execute on watch
  • Offline workout tracking
  • Track runs and cardio with GPS
  • Automatic personal record detection
  • Muscle recovery and readiness scores
  • Import/export workout history
Read full description

Your lifts and your runs in one training log. Link Garmin Connect and your Rack workouts can upload there automatically. Log every set's weight and reps from your wrist. No rep counter to fix afterwards. Plan per-set weights and supersets on your phone, then lift from your watch, even offline. Rack is a hybrid training app for iPhone and Garmin watches. Use it on your phone alone, or pair a supported Garmin watch and run the workout from your wrist. ON YOUR WATCH - See the current exercise, its target reps and weight, and your notes - Adjust weight or reps, then confirm the set - Rest timer with +/- adjust and the next set's target - Live heart rate, from the watch or a paired chest strap - Undo a set or reorder exercises from the wrist - No phone? Send a routine to the watch first, train offline, and the sets sync back when you reconnect - A distinct vibration when you finish a workout with a new personal record ON YOUR PHONE - Build routines with per-set reps, weight and rest, supersets, RPE or RIR targets, tempo and warm-up sets - Start from preset routines and ready-made programs, or build your own weekly or custom-length program - Rest timer, hold timer for planks and carries, and a Live Activity on the Lock Screen - Swap or reorder exercises mid-workout RUNS AND CARDIO - Track a run, ride or other cardio session on your phone, with GPS distance and pace - Build interval workouts from warm-up, work, recovery and cool-down steps with repeats - Review splits, heart-rate zones and a heart-rate chart after each session - Import runs and rides from Apple Health so they sit next to your lifts PROGRESS AND RECOVERY - Personal records detected automatically: weight, volume and estimated 1RM - Per-exercise charts, a PR timeline and muscle-group volume over time - A muscle recovery map that updates from your strength and cardio training - A readiness score that can include Body Battery and stress from a paired Garmin watch - Plateau and muscle-imbalance flags BRING YOUR HISTORY - Import from Hevy, Strong or Fitbod (CSV export) - Export your history as CSV or XLSX - Completed workouts save to Apple Health OPTIONAL AI FEATURES Training Intelligence stays off until you turn it on. With it on, Rack can look into a stalled lift and propose program changes, which you approve or skip one by one. SUPPORTED WATCHES Garmin fenix, Forerunner, Instinct, Venu, epix, Enduro, Descent, tactix, MARQ, D2, Approach and quatix families (60+ models). Install the Rack watch app from the Connect IQ Store. RACK PRO Rack is free to download. The free plan keeps a 90-day history window and up to 3 routines. Pro adds full history, no routine limit, ranked exercise swap suggestions, automatic progression rules and a monthly Training Audit. Pro is $8.99/month or $54.99/year, each with a 2-week free trial, or a one-time Lifetime purchase ($119.99 while Charter seats last). US prices; prices in other countries may differ. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID. Manage or cancel in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rackstrength.com/privacy Garmin, Garmin Connect and the Garmin device names above are trademarks of Garmin Ltd. or its subsidiaries. Rack is not affiliated with or endorsed by Garmin.

Screenshots

Health Sync by appyhapps4 screens
Rack4 screens

Verdict

The call

The clearest difference is review sentiment: Rack at 86% against Health Sync by appyhapps's 53%. Health Sync by appyhapps's advantage is rating (4.3 vs 4.0) and ratings volume (124 vs 12). On price, update cadence, ads and in-app purchases 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. Health Sync by appyhapps sells 1 one-off in-app purchase and Rack sells 7 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Health Sync by appyhapps holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Health Sync by appyhapps has 124 ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 53% of Health Sync by appyhapps's written reviews are positive against 86% of Rack's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Health Sync by appyhapps ships an update every 5 days, Rack every 10 days. Both last shipped on November 5, 2026.

Scorecard3 real differences · 7 level
Health Sync by appyhapps versus Rack: the parameters behind the verdict, then further details
ParameterHealth Sync by appyhappsRack
PriceFreeFree
Rating4.3 (124 ratings) — better4.0 (12 ratings)
Positive reviews53.5% of reviews85.7% of reviews — better
Number of ratings124 — better12
Update frequencyEvery 5 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size23 MB43 MB
Age rating4+4+
Developerappyhapps.nl B.V.Aviv Noah

Customer experience

Health Sync by appyhapps

All ratings124 ratings
Positive79.8%
Neutral6.5%
Negative13.7%
Written reviews129 reviews
Positive53.5%
Neutral15.5%
Negative31.0%

Rack

All ratings11 ratings
Positive72.7%
Neutral9.1%
Negative18.2%
Written reviews7 reviews
Positive85.7%
Neutral14.3%
Negative0.0%

In-app purchases

1 purchases

Health Sync by appyhapps

One-time1
  • No-Expiration License$3.99
7 purchases

Rack

Subscriptions2
  • Monthly Pro14 Days trial$8.991 Month
  • Annual Pro14 Days trial$54.991 Year
One-time5
  • Training Audit$1.49
  • Training Audit 3-Pack$3.99
  • Lifetime Pro$89.99
Show 2 more
  • Rack Charter Lifetime$119.99
  • Lifetime Pro$149.99

Questions

Is Health Sync by appyhapps free?
Health Sync by appyhapps is free to download, with in-app purchases available.
Is Rack free?
Rack is free to download, with in-app purchases available.
Which has better reviews, Health Sync by appyhapps or Rack?
Health Sync by appyhapps is rated higher. Health Sync by appyhapps averages 4.3 out of 5 from 124 ratings, while Rack averages 4.0 from 12 ratings.
Do Health Sync by appyhapps or Rack have ads?
Neither Health Sync by appyhapps nor Rack shows ads.
Which is updated more often, Health Sync by appyhapps or Rack?
Health Sync by appyhapps ships an update every 5 days, and Rack every 10 days. Most recently, Health Sync by appyhapps was updated on November 5, 2026 and Rack on November 5, 2026.

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