Weighback vs CTS ActivityLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Weighback
This app helps you track your weight by analyzing your history from Apple Health. It identifies meaningful goals based on past readings and presents them as achievable milestones. The app focuses on privacy, keeping all your data on your device.
- Reads weight from Apple Health
- Identifies historical weight goals
- Presents goals as a milestone staircase
- Shows all-time low and peak weight
- Displays date of current weight history
- Zoomable historical weight chart
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Weighback is a quiet companion for your weight tracking. It reads your existing weight readings from Apple Health, finds the meaningful goals based on your history, and presents them as a progressing staircase of milestones you can target. Treat weight loss like a rewind in time, for you to find your "weigh" back! WHAT YOU'LL SEE • Your all-time low. Every weighback goal you've crossed, in descending order. • Today's "weighback" — the most recent date you previously weighed what you weigh right now. (If the number on the scale feels familiar, it probably is.) • Your peak weight and how far you've come from it. • A chart that zooms cleanly from a single month out to your full history, with momentum panning when you grab the timeline. WHY IT'S DIFFERENT • Your data stays on your iPhone. Weighback never sends it anywhere, never logs in, and has no account. • It doesn't ask you to weigh in. It reads what's already in Apple Health, including readings from any scale or third-party app that writes there. • The full chart goes back as far as your data does. Weighback is free with no ads. A small in-app tip supports continued development; the feature set is the same either way.
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.
- 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
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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
Verdict
The clearest difference is update cadence: CTS ActivityLab at every 2 days against Weighback's every 3 weeks. On price, rating, ratings volume and ads 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
Both are free to download. Weighback 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.
On the App Store both sit at effectively the same score — 5.0 for Weighback against 5.0 for CTS ActivityLab. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Weighback ships an update every 3 weeks, CTS ActivityLab every 2 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.
| Parameter | Weighback | CTS ActivityLab |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Jackson | CTS Media Group LLC |
Customer experience
Weighback
CTS ActivityLab
In-app purchases
Weighback
- Tip$0.99
CTS ActivityLab
- CTS ActiveLab Monthly7 Days trial$1.991 Month









