Comparison

Pace by Athlytic 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

Pace by Athlytic

This app analyzes your Apple Watch health data to provide clear, plain-language insights into your well-being. It monitors over 35 health signals, learns your personal baselines, and alerts you to significant changes, offering explanations and celebrating improvements without overwhelming you with raw numbers.

Highlights
  • Reads Apple Watch health data
  • Plain-language health summaries
  • Monitors 35+ health signals
  • Learns personal baselines
  • Alerts for significant changes
  • Health pattern discovery
  • AI-powered health assistant
Features
Read full description

Pace by Athlytic reads your Apple Watch health data and tells you what actually matters -- in plain language, not just charts and numbers. Most health apps overwhelm you with scores, rings, and graphs. Pace takes a different approach. It monitors 35+ health signals, learns what's normal for you, and only speaks up when something is worth your attention. HOW IT WORKS Just wear your Apple Watch. Pace does the rest. No data entry required, no numbers to interpret. Each day, Pace checks your health data and gives you a clear summary of how you're doing. WHAT PACE TRACKS Sleep - Duration, quality, efficiency, and consistency - Deep, REM, and core sleep stages - Breathing disturbance tracking Vitals - Heart rate variability (HRV) and resting heart rate - Blood pressure trends with AHA classification - Blood oxygen, respiratory rate, and wrist temperature Cardio Fitness - VO2 Max tracking with age and sex-adjusted context - Walking heart rate trends Activity - Steps with personalized pacing and goal tracking - Active calories, flights climbed, and standing hours - Time in daylight with weather-aware context Workouts - Automatic detection from Apple Watch - Duration, calories, and heart rate summaries Body Composition - Weight, lean body mass, body fat percentage, and FFMI - Personalized baseline ranges with trend detection Mobility - Walking speed, steadiness, and symmetry - Step length, stair speed, and six-minute walk distance - 8 metrics that research links to long-term health SMART HEALTH INSIGHTS Pace learns your personal baselines over 60 days, then alerts you when something shifts. Instead of showing you a number and hoping you know what it means, Pace explains it: - "Your heart rate variability is lower than usual" - "Your blood pressure trend is elevated -- the AHA considers this Stage 1" - "Your walking speed has declined -- this is one of the strongest predictors of overall health" And when things improve, Pace tells you that too. No open loops -- when a concern resolves, you'll know about it. HEALTH PATTERNS Pace discovers correlations hidden in your data -- like how alcohol affects your HRV, or how daylight impacts your deep sleep. Every pattern is statistically validated and backed by peer-reviewed research. No guessing, no astrology. WHAT MAKES PACE DIFFERENT - Conversational health summaries written in plain English - Alerts you when something needs attention, celebrates when things improve - All monitoring is passive -- just wear your Apple Watch - Personal baselines, not one-size-fits-all thresholds - Weather-aware context for activity and daylight - Every clinical threshold is backed by peer-reviewed research PREMIUM FEATURES - AI-powered health assistant -- ask questions about your data in plain English - Health pattern discovery across 35+ metrics - Smart notifications when something shifts - Step goal celebrations with streak tracking - Weekly health summary notifications - Exportable PDF health reports to share with your doctor - Trend charts for all metrics - Step pacing and detailed concern views - Reads alcohol, caffeine, hydration, and nutrition data from Apple Health YOUR PRIVACY All analysis happens on your iPhone using Apple's on-device AI. No cloud uploads, no accounts, no tracking, no data selling. Your health data never leaves your phone. Pace by Athlytic -- your health, explained.

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

Pace by Athlytic4 screens
CTS ActivityLab4 screens

Verdict

The call

The clearest difference is rating: CTS ActivityLab at 5.0 against Pace by Athlytic's 4.6. CTS ActivityLab also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (17.0 vs 26.0). Pace by Athlytic's advantage is ratings volume (79 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. Pace by Athlytic sells 2 in-app purchases, starting at $4.99 per month 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 4.6. That said, the two scores are not equally well evidenced: Pace by Athlytic has 79 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Pace by Athlytic ships an update every 2 weeks, CTS ActivityLab every 2 days. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Pace by Athlytic versus CTS ActivityLab: the parameters behind the verdict, then further details
ParameterPace by AthlyticCTS ActivityLab
PriceFreeFree
Rating4.6 (79 ratings)5.0 (1 ratings) — better
Positive reviews54.5% of reviews—
Number of ratings79 — better1
Update frequencyEvery 2 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Mac
Requires iOS26.017.0 — better
Further details — not scored
Size14 MB9 MB
Age rating17+4+
DeveloperMyndArc, LLCCTS Media Group LLC

Customer experience

Pace by Athlytic

All ratings76 ratings
Positive89.5%
Neutral0.0%
Negative10.5%
Written reviews22 reviews
Positive54.5%
Neutral13.6%
Negative31.8%

CTS ActivityLab

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

In-app purchases

2 purchases

Pace by Athlytic

Subscriptions2
  • Pace Premium Monthly7 Days trial$4.991 Month
  • Pace Premium Annual7 Days trial$29.991 Year
1 purchases

CTS ActivityLab

Subscriptions1
  • CTS ActiveLab Monthly7 Days trial$1.991 Month

Questions

Is Pace by Athlytic free?
Pace by Athlytic 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, Pace by Athlytic or CTS ActivityLab?
CTS ActivityLab is rated higher. Pace by Athlytic averages 4.6 out of 5 from 79 ratings, while CTS ActivityLab averages 5.0 from 1 ratings.
Do Pace by Athlytic or CTS ActivityLab have ads?
Neither Pace by Athlytic nor CTS ActivityLab shows ads.
Which is updated more often, Pace by Athlytic or CTS ActivityLab?
Pace by Athlytic ships an update every 2 weeks, and CTS ActivityLab every 2 days. Most recently, Pace by Athlytic was updated on October 25, 2026 and CTS ActivityLab on October 10, 2026.

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