Comparison

Intervals.icu Companion vs Karyo

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

Head to head
About

Intervals.icu Companion

This companion app visualizes your fitness, fatigue, and form trends using data from Intervals.icu. It offers configurable widgets for desktop and home screens, along with Apple Watch faces, to provide quick access to your key metrics and automatic data updates.

Highlights
  • Interactive Fitness, Fatigue & Form Graph
  • Apple Watch App for data viewing
  • Multi-Platform Widgets (iOS, iPadOS, watchOS, macOS)
  • Vitals Tracking (HRV, readiness, sleep)
  • Automatic Data Updates via notifications
  • Sports Summary Widget for goal tracking
  • Customizable Data Settings
Features
Read full description

Intervals Companion is a powerful third-party companion app for Intervals.icu, bringing your training data to iOS, watchOS, and macOS with beautiful widgets, deep Apple Health integration, and advanced analytics. Two-Way Apple Health Sync Automatically sync workouts recorded on Apple Watch or iPhone to Intervals.icu, and push Intervals.icu activities back to Apple Health to close your Activity Rings. Sync daily health metrics like HRV, sleep scores, and readiness scores between Apple Health and Intervals.icu, keeping all your data in one place. Apple Watch Workout Sync Convert planned workouts from your Intervals.icu calendar and send them directly to Apple Watch so your structured sessions are ready to go when you are. FIT File Import Manually import FIT files to Intervals.icu and/or Apple Health. Bring in workouts from any device or platform with a few taps. Metrics & Custom Charts Build personalized charts and widgets across all fitness and health metric fields. Visualize the data that matters most to you, your way. Library Browse your Intervals.icu workout library and add workouts directly to your training calendar from your phone. Training Analytics - Interactive Fitness, Fatigue & Form graph with drag-to-inspect for past activities and planned workouts - Predict future form based on your scheduled training load - Vitals tracking: HRV, readiness & sleep scores, resting and sleeping heart rates - Distance splits and pace zone charts on activity detail screens Chat & Community - Send and receive private messages with coaches and athletes directly from your phone - View and post comments on activities to stay connected with your training community - Push notification alerts for new messages and activity comments Widgets & Watch - Home screen widgets for iOS, iPadOS, and macOS - Apple Watch app and watch face complications - Sports Summary widget: weekly goal rings for distance and time with customizable colors - Silent push notifications trigger automatic updates when new activities or wellness data arrive on Intervals.icu Intervals Companion is an independent hobby project, not affiliated with or endorsed by Intervals.icu. Fitness metrics and scores are for informational purposes only — not a substitute for professional medical or coaching advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Karyo

Read full description

Karyo is the precision reproductive wellness protocol engineered for men. Designed for the data-driven optimizer, the Karyo App serves as the central dashboard for your reproductive wellness, bridging the gap between daily lifestyle inputs and long-term biological outputs. By tracking the variables that actively influence the 90-day spermatogenesis cycle, Karyo provides a clear, uncompromising understanding of your biological trajectory. THE REGENERATION INDEX Your daily Regeneration Index provides a precise measure of your body's baseline. This 0 to 100 score calculates the compounding impact of your lifestyle across seven core pillars of male health, offering actionable guidance to keep your system calibrated. CLEARANCE KINETICS Karyo surfaces the optimal windows so you know exactly where you stand in your 90-day timeline. THERMAL DEFENSE Monitor heat exposure from your environment. Discover how laptops, saunas, and daily habits impact your reproductive health. STRESS RESILIENCE & TOXIN LOAD Understand how daily actions and environmental factors affect your body. Find the required balance between systemic strain and recovery. PRECISION PROTOCOL TRACKING Track your wellness routines alongside the physical Karyo supplement system to maintain impactful nutritional balance. LONG-TERM BIOLOGICAL TRENDS View your daily, weekly, and monthly trends. Track your progress across three distinct biological phases: Fast-Response, Cellular Architecture, and the Clinical Buffer. BIOHACKER'S LIBRARY Get personalized insights and guidance on how your environment impacts your body with deep-dive science modules on oxidative stress, thermoregulation, and reproductive biology. Karyo is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Karyo is only designed for general fitness and wellness purposes. Please do not make any changes to your medication, daily routines, nutrition, sleep schedule, or workouts without first consulting your doctor or another medical professional.

Screenshots

Intervals.icu Companion4 screens
Karyo4 screens

Verdict

The call

The clearest difference is in-app purchases: Karyo at none against Intervals.icu Companion's 2. Karyo also leads on iOS requirement (15.1 vs 18.6). On price, ads and device support 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. Intervals.icu Companion sells 2 in-app purchases, starting at $9.99 per year. Karyo asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Intervals.icu Companion versus Karyo: the parameters behind the verdict, then further details
ParameterIntervals.icu CompanionKaryo
PriceFreeFree
Rating4.8 (40 ratings) — better—
Positive reviews81.5% of reviews—
Number of ratings40 — better—
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.615.1 — better
Further details — not scored
Size78 MB102 MB
Age rating4+17+
DeveloperMcEwen Labs LLCKaryo, LLC

In-app purchases

2 purchases

Intervals.icu Companion

Subscriptions1
  • Yearly Supporter$9.991 Year
One-time1
  • IC+ Super Fan$49.99
None

Karyo

No in-app purchases

Questions

Is Intervals.icu Companion free?
Intervals.icu Companion is free to download, with in-app purchases available.
Is Karyo free?
Karyo is free to download, with no in-app purchases.
Do Intervals.icu Companion or Karyo have ads?
Neither Intervals.icu Companion nor Karyo shows ads.

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