# CTS ActivityLab — GPX, TCX, FIT File Analyzer

> Advanced analysis and comparison of sports activity files from multiple devices. (iPhone/iPad app by CTS Media Group LLC.)

- Source: https://appshunter.io/ios/app/cts-activitylab/id6786826686 (this page in markdown: same URL + `.md`)
- Developer: [CTS Media Group LLC](https://appshunter.io/developer/6786826688)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 9 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, European Portuguese, European Spanish
- Released: 2026-07-17
- Data updated: 2026-10-10
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/cts-activitylab/id6786826686/reviews.md

## What is CTS ActivityLab?

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/

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CTS ActiveLab Monthly | $1.99 | per month |



## Frequently asked questions about CTS ActivityLab

### What devices can I import activity data from into CTS ActivityLab?

You can import GPX, FIT, and TCX files from a wide range of devices including Garmin, COROS, Apple Watch, Suunto, Polar, Amazfit, and Wahoo.

### What are the benefits of CTS ActivityLab Pro?

CTS ActivityLab Pro is required to compare multiple activities side-by-side, view agreement statistics between devices, and save or sync your comparisons using iCloud.

### Does CTS ActivityLab have ads?

No, CTS ActivityLab does not contain advertisements. The core functionality is free, with an optional subscription for advanced features.

### What is the subscription cost for CTS ActivityLab Pro?

The CTS ActiveLab Monthly subscription is $1.99 per month and includes a 7-day free trial for eligible new subscribers.

### What age rating does CTS ActivityLab have?

CTS ActivityLab has an age rating of 4+, making it suitable for a broad audience.

### On which devices can I use CTS ActivityLab?

CTS ActivityLab is available on Mac, iPhone, and iPad, allowing you to sync and save comparisons across multiple Apple devices.

### How often is CTS ActivityLab updated?

The latest version, 1.17, was released on October 9, 2026, indicating a consistent update schedule from the developer.

### Can I import activities directly from Apple Health?

Yes, CTS ActivityLab allows direct import of activities from Apple Health on iOS devices, making it easy to access your existing fitness data.

## Version history (last 5 releases)

### 1.17 — 2026-10-09

-Optimizations for performance improvements
-Updated Apple Health integration with disclaimer of what information can be imported
-Added Pace as a metric for comparison

### 1.16 — 2026-10-07

Beta Update: Apple Health import optimizations.

### 1.15 — 2026-10-05

-Fixed issue when importing multiple files from Apple Health resulted in partial imports in some cases.
-Optimizations and improvements to performance.

### 1.14 — 2026-08-14

-Fixed an error that would result in misaligned charts with certain devices
-Added ability to hide/show devices from charts and map
-optimized and improved stability and performance

### 1.13 — 2026-07-20

Update includes new Free Tier for single activity analysis.

## Apps similar to CTS ActivityLab

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Gym Tracker - Hybrid](https://appshunter.io/ios/app/gym-tracker-hybrid/id6744580206) | 5.0 (1) | Free | Health & Fitness |
| [Vita AI Fitness & Health Buddy](https://appshunter.io/ios/app/vita-ai-fitness-and-health-buddy/id6769347697) | 5.0 (2) | Free | Health & Fitness |
| [Velo Dash](https://appshunter.io/ios/app/velo-dash/id6737304738) | 1.0 (1) | Free | Health & Fitness |
| [Spark Direct](https://appshunter.io/ios/app/spark-direct/id1509813684) | 4.8 (19) | Free | Health & Fitness |
| [Polsen Health (NOWATCH)](https://appshunter.io/ios/app/polsen-health-nowatch/id1594187321) | 3.5 (27) | Free | Health & Fitness |
| [Boston Sports Med](https://appshunter.io/ios/app/boston-sports-med/id6466039413) | 4.4 (7) | Free | Health & Fitness |

## Related topics

[lab](https://appshunter.io/ios/topics/lab)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*