Comparison

Health Sync by appyhapps vs CTS ActivityLab

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

Seamlessly transfer your health and fitness data between various popular apps and devices. This tool automates background syncing, ensuring your information is up-to-date across your chosen platforms. Enjoy a week-long free trial to explore its capabilities before a one-time purchase unlocks full historical data syncing.

Highlights
  • Syncs data between health and fitness apps
  • Supports Apple Health, Fitbit, Garmin, Strava, and more
  • Automatic background syncing
  • Historical data sync option
  • Privacy-by-design approach
  • Easy-to-use interface
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

CTS ActivityLab

Analyze detailed fitness data from various sports devices. Compare multiple activities, inspect GPS accuracy, and visualize routes and statistics with powerful charts. Gain insights beyond basic watch metrics.

Highlights
  • Compare multiple activities side-by-side
  • Import activities from Apple Health
  • Analyze GPS accuracy and track quality
  • Inspect elevation and altitude data
  • Review sensor metrics (heart rate, pace, etc.)
  • Visualize routes and statistics with charts
  • Compare device accuracy with custom algorithm
Features
Read full description

ActivityLab is designed for athletes who want to understand their fitness data beyond the basic metrics shown by their watch and to compare multiple devices side by side. Import GPX, FIT, and TCX files from Garmin, COROS, Apple Watch, Suunto, Polar, Amazfit, Wahoo, and many other devices to explore detailed performance data. With ActivityLab you can: • Compare multiple activities side-by-side • Import activities directly from Apple Health (IOS Only) • Analyze GPS accuracy and track quality • Inspect elevation and altitude data • Review heart rate, pace, cadence, power, battery usage, and other sensor metrics • Visualize routes and activity statistics with powerful charts • Discover insights that aren't available in your watch's companion app • Compare device accuracy side-by-side with ActivityLabs custom agreement algorithm • Save and Sync comparisons across multiple devices (iPhone, iPad, and Mac!) Whether you're testing new GPS watches, training for your next race, or simply curious about your data, ActivityLab gives you professional-grade analysis tools in an easy-to-use interface. CTS ActivityLab is free for importing, viewing, analyzing, and sharing one activity at a time. An optional ActivityLab Pro auto-renewing subscription is required to compare multiple activities, view agreement statistics, and save or sync comparisons with iCloud. Eligible new subscribers receive a 7-day free trial, followed by the localized monthly App Store price. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Health Sync by appyhapps4 screens
CTS ActivityLab4 screens

Verdict

The call

The clearest difference is rating: CTS ActivityLab at 5.0 against Health Sync by appyhapps's 4.3. CTS ActivityLab also leads on update cadence (every 2 days vs every 5 days). Health Sync by appyhapps's advantage is ratings volume (120 vs 1). On price, ads, in-app purchases and monetization model 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 CTS ActivityLab sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CTS ActivityLab holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Health Sync by appyhapps has 120 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Health Sync by appyhapps ships an update every 5 days, CTS ActivityLab every 2 days. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
Health Sync by appyhapps versus CTS ActivityLab: the parameters behind the verdict, then further details
ParameterHealth Sync by appyhappsCTS ActivityLab
PriceFreeFree
Rating4.3 (120 ratings)5.0 (1 ratings) — better
Positive reviews54.2% of reviews—
Number of ratings120 — better1
Update frequencyEvery 5 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.017.0
Further details — not scored
Size22 MB9 MB
Age rating4+4+
Developerappyhapps.nl B.V.CTS Media Group LLC

Customer experience

Health Sync by appyhapps

All ratings114 ratings
Positive80.7%
Neutral6.1%
Negative13.2%
Written reviews120 reviews
Positive54.2%
Neutral15.8%
Negative30.0%

CTS ActivityLab

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Health Sync by appyhapps

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

CTS ActivityLab

Subscriptions1
  • CTS ActiveLab Monthly7 Days trial$1.991 Month

Questions

Is Health Sync by appyhapps free?
Health Sync by appyhapps is free to download, with in-app purchases available.
Is CTS ActivityLab free?
CTS ActivityLab is free to download, with in-app purchases available.
Which has better reviews, Health Sync by appyhapps or CTS ActivityLab?
CTS ActivityLab is rated higher. Health Sync by appyhapps averages 4.3 out of 5 from 120 ratings, while CTS ActivityLab averages 5.0 from 1 ratings.
Do Health Sync by appyhapps or CTS ActivityLab have ads?
Neither Health Sync by appyhapps nor CTS ActivityLab shows ads.
Which is updated more often, Health Sync by appyhapps or CTS ActivityLab?
Health Sync by appyhapps ships an update every 5 days, and CTS ActivityLab every 2 days. Most recently, Health Sync by appyhapps was updated on October 27, 2026 and CTS ActivityLab on October 10, 2026.

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