Comparison

Athyx vs FieldSync Pro

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 offers a simple interface to track key training insights and review past sessions. Educational content provides general information on training concepts and performance metrics.

Highlights
  • Lactate capture for training intensity estimation
  • Track key training insights
  • Simple interface for athletes
  • Review past session history
  • Educational content on training concepts
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

FieldSync Pro

This app serves as a comprehensive training log for track and field athletes and coaches. It allows for detailed session logging, performance tracking, and team communication. Athletes can monitor their progress and receive assignments, while coaches can manage workouts, attendance, and team updates.

Highlights
  • Log detailed training sessions rep by rep
  • Track personal records by season (indoor/outdoor)
  • Add videos and notes to jumps/throws
  • Integrate workouts from Apple Health
  • Manage team attendance and communication
  • Prescribe interval sessions with targets
  • View team analytics and progress
Features
Read full description

FieldSync Pro is a training log built for track and field, for the coach writing the workout and the athlete doing it. FOR ATHLETES See what you have today. Your practices and the work your coach assigned sit on one screen, with any session still waiting on your splits called out. Log a session rep by rep. Type each split as you take it and see it against your coach's target. Bring in your workouts from Apple Health. Runs from your watch come in with distance, time and laps, and you choose which lap answers which rep. What your watch measured, like heart rate, pace and cadence, is shown only to you, and a time from a watch is always labelled. Keep your marks by season. Your PRs come from your meets, indoor and outdoor kept apart, with a practice best of their own and a goal for the season ahead. Add a video to a jump or a throw. Up to 15 seconds, with your notes, and you choose who can watch it. Watch it back in slow motion or frame by frame. Log your own training. Runs and cross training you do on your own sit next to the work your coach assigned. Know where you stand for every practice. You're down as coming unless you say otherwise. Can't make it? Tell your coach from the Feed or the practice, with a note if you like, and they decide if you are excused. What your coach marked you shows on the practice and on its card, and a reminder before each practice and meet tells you the time and the place. Cheer each other on in the Feed. Every mark you log and every goal you set posts for your teammates, coaches, parents and circle to like and comment on. Post a few words with a photo or video, or turn sharing off in Settings. See your next practice at a glance. Add the FieldSync widget to your Home Screen or Lock Screen. FOR COACHES Prescribe real work. Interval sessions with sets, reps, distance, recovery and a target band. Hang them on a practice or a date, and assign them to one athlete or a whole squad. Read the session back. Every split against the target, next to the last time that athlete ran it. See the whole team at once. Every athlete with their events, grouped the way you train them. Run practices. A schedule your team can see, weather and lightning holds, and a practice board for the day. Athletes and parents are reminded before each one, and athletes who can't make it tell you there. Take attendance your way. Everyone counts as here unless you mark them, or nobody is in until you check them in, with Check everyone in for a quick start. Team Analytics shows attendance over time: who is missing practices, who is often late and who is always there. Talk to the team. Every team gets a team chat for its athletes and coaches, and announcements reach everyone, parents included, with a PDF or picture attached when you need one. Bring on the whole team. Share the team code, show it as a QR code, or print a sign up sheet, then approve everyone waiting at once. BUILT FOR HIGH SCHOOL TEAMS We do not permit signups under 13. Athletes 13 to 17 sign up on their own and can add a parent's email, so a parent hears that they joined. Parents can follow the team schedule and get its reminders, and any one to one chat between a coach and an athlete under 18 always includes another adult. A team chat opens only once the team has two adults on it. Videos are kept without their sound or the location they were filmed. An athlete or their parent can remove any comment on the athlete's posts, and any post or comment can be reported. Reported posts are hidden at once. There is no advertising, no third party analytics, and nothing about an athlete is sold to anybody, ever. Apple Health is optional and read only: the app reads your workouts and what your watch measured only when you open it and ask. Your coach sees your runs' distance, time and laps; the rest is shown only to you. FieldSync Pro never reads your location and never writes to Apple Health. Free for teams. Built by coaches who were tired of spreadsheets.

Screenshots

Athyx4 screens
FieldSync Pro4 screens

Verdict

The call

The clearest difference is review sentiment: FieldSync Pro at 100% against Athyx's 0%. FieldSync Pro also leads on rating (5.0 vs 2.3). Athyx's advantage is device support (4 vs 2). On price, ratings volume, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

FieldSync Pro holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 0% of Athyx's written reviews are positive against 100% of FieldSync Pro's.

UpkeepUpdate frequency

Athyx ships an update every 2 days, FieldSync Pro daily. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Athyx versus FieldSync Pro: the parameters behind the verdict, then further details
ParameterAthyxFieldSync Pro
PriceFreeFree
Rating2.3 (3 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings3 — better2
Update frequencyEvery 2 daysDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size21 MB44 MB
Age rating4+4+
DeveloperAthyx, Inc.FieldSync LLC

Customer experience

Athyx

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

FieldSync Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Athyx

No in-app purchases

None

FieldSync Pro

No in-app purchases

Questions

Is Athyx free?
Athyx is free to download, with no in-app purchases.
Is FieldSync Pro free?
FieldSync Pro is free to download, with no in-app purchases.
Which has better reviews, Athyx or FieldSync Pro?
FieldSync Pro is rated higher. Athyx averages 2.3 out of 5 from 3 ratings, while FieldSync Pro averages 5.0 from 2 ratings.
Do Athyx or FieldSync Pro have ads?
Neither Athyx nor FieldSync Pro shows ads.
Which is updated more often, Athyx or FieldSync Pro?
Athyx ships an update every 2 days, and FieldSync Pro daily. Most recently, Athyx was updated on November 5, 2026 and FieldSync Pro on October 31, 2026.

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