Comparison

Athyx vs Star Chaser Run

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

Head to head
About

Athyx

This app helps athletes estimate training intensity by capturing lactate data. It provides insights into training sessions and offers educational content on performance metrics. Review your past activities and understand training patterns with a simple interface.

Highlights
  • Lactate data capture
  • Training intensity guidance
  • Performance metric insights
  • Session history review
  • Educational training content
  • Simple interface for athletes
Features
Read full description

Athyx captures lactate during training and is used as an estimate to guide training intensity. Track key training insights and view your sessions in a simple, fast interface built for athletes. EDUCATIONAL CONTENT The AI provides general information about training concepts and performance metrics. Content is designed to help users understand common patterns and terminology used in athletic training. SESSION HISTORY Review past sessions, including time, activity, and associated training data in a simple interface. Athyx products and services are not medical devices and are not intended to diagnose, treat, cure, monitor, or prevent any disease or medical condition. They are designed solely for general fitness and training purposes. The data provided is for informational use only and should not be considered medical advice. Do not make changes to your health, medication, nutrition, or training routines without consulting a qualified healthcare professional.

About

Star Chaser Run

Features
Read full description

StarChaser Run keeps you ahead of every deadline for the Abbott World Marathon Majors — Tokyo, Boston, London, Sydney, Berlin, Chicago, New York City, and new for 2027: Cape Town, Africa's first Major. Never miss another registration window, lottery deadline, charity entry, or qualification cutoff. Each major's full annual timeline is one tap away, and you can add your own races alongside the Majors. Features: • Every important date in one timeline — registration opens and closes, lottery deadlines and results, charity entry windows, qualification cutoffs, expo days, and race day • "Action Required" section surfaces the deadlines closing in the next 30 days • Home screen widgets show the closest deadlines at a glance — stack the Countdown and Action Required variants for both views • Local reminders 7 days and 1 day before every milestone you care about • Animated route playback on real maps for the full marathon course • Add your own marathons outside the Majors, with optional GPX course import • Fully offline — data is fetched once, cached, and works without a connection • Privacy-first: no accounts, no analytics, no tracking, no data collected Built for runners chasing their next big race.

Screenshots

Athyx4 screens
Star Chaser Run4 screens

Verdict

The call

The clearest difference is update cadence: Athyx at every 2 days against Star Chaser Run's every 8 days. Athyx also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Athyx ships an update every 2 days, Star Chaser Run every 8 days. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Athyx versus Star Chaser Run: the parameters behind the verdict, then further details
ParameterAthyxStar Chaser Run
PriceFreeFree
Rating2.3 (3 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 days — betterEvery 8 days
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size19 MB12 MB
Age rating4+4+
DeveloperAthyx, Inc.Lukasz Pomianek

In-app purchases

None

Athyx

No in-app purchases

None

Star Chaser Run

No in-app purchases

Questions

Is Athyx free?
Athyx is free to download, with no in-app purchases.
Is Star Chaser Run free?
Star Chaser Run is free to download, with no in-app purchases.
Do Athyx or Star Chaser Run have ads?
Neither Athyx nor Star Chaser Run shows ads.
Which is updated more often, Athyx or Star Chaser Run?
Athyx ships an update every 2 days, and Star Chaser Run every 8 days. Most recently, Athyx was updated on October 17, 2026 and Star Chaser Run on October 7, 2026.

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