Comparison

Fitness App (ABC Trainerize) vs Underwave Training

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

Head to head
About

Fitness App (ABC Trainerize)

This app connects fitness professionals with their clients, offering tools for online coaching, personalized training plans, nutrition guidance, and progress tracking. It aims to enhance client engagement and help individuals achieve their health goals through a comprehensive digital experience.

Highlights
  • Client engagement tools
  • Online training plan delivery
  • Nutrition and habit coaching
  • Progress tracking
  • In-app messaging and groups
  • Customizable workouts
Features
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ABC Trainerize is the all-in-one coaching software for personal trainers, online coaches, gyms, and fitness studios. Build workout programs, deliver nutrition coaching, message clients, track progress, manage habits, and grow your fitness business all from one platform. Whether you coach clients online, in person, or in a gym, ABC Trainerize helps you manage every aspect of your coaching business while giving clients an engaging fitness experience. WORKOUTS & TRAINING Create and deliver personalized workout programs, on-demand workouts, classes, and exercise libraries. Update training plans instantly and track workout completion and adherence. NUTRITION COACHING Deliver meal plans, recipes, calorie tracking, and nutrition coaching in the same app. Help clients build healthier habits and stay accountable. CLIENT MANAGEMENT Manage client calendars, check-ins, progress, and coaching programs in one place. Invite new clients and keep every account connected to your business. MESSAGING & ACCOUNTABILITY Chat with clients in real time, create groups and challenges, automate reminders, and keep clients engaged between sessions. PROGRESS TRACKING Track body measurements, workout adherence, habits, photos, and performance to help clients stay motivated and achieve their fitness goals. WEARABLES & INTEGRATIONS Sync data from Apple Health, Apple Watch, Fitbit, Garmin, and Withings, including steps, activity, sleep, heart rate, and weight. Connect your business with integrations like Mindbody, Glofox, Zapier, and YouTube. WHO IS IT FOR? ABC Trainerize is designed for fitness professionals and their clients. Coaches create accounts and invite clients to join. Clients can only access the app through a trainer, gym, or fitness business using ABC Trainerize. WHY FITNESS PROFESSIONALS CHOOSE ABC TRAINERIZE • Manage clients, workouts, nutrition, and communication in one platform • Build personalized training programs faster • Deliver workout and nutrition coaching together • Track client progress, habits, and accountability • Keep clients engaged with messaging, challenges, reminders, and badges • Sync wearables and connect your favorite business tools • Coach clients from anywhere, on any device ABC Trainerize helps fitness professionals save time, deliver better coaching, increase client engagement, and grow their business. FEATURES FOR CLIENTS Access personalized workout programs and track your workouts with ease. Log meals and monitor calorie intake with the built-in food tracker. Plan daily meals and discover healthy recipes. Chat with your coach in real time and participate in groups and challenges. Track body stats, progress photos, habits, and fitness milestones in one place. Stay motivated with streaks, badges, and personalized reminders. Receive notifications for scheduled workouts, check-ins, and activities. Sync with Apple Health, Apple Watch, Fitbit, Garmin, Withings, and other supported devices to automatically track steps, sleep, activity, heart rate, and weight. Important: ABC Trainerize is a companion app for fitness professionals and businesses using the platform. Clients can only access the app after being invited by their trainer, coach, gym, or fitness studio. An online account is required. For more information, visit our website.

About

Underwave Training

Features
Read full description

Train breathing, breath holds, and mental control with the Underwave Method — trusted by elite ocean athletes.

Screenshots

Fitness App (ABC Trainerize)4 screens
Underwave Training4 screens

Verdict

The call

The clearest difference is chart position: Fitness App (ABC Trainerize) at #155 against Underwave Training's unranked. Fitness App (ABC Trainerize) also leads on device support (4 vs 2). Underwave Training's advantage is iOS requirement (13.0 vs 15.5). On price, update cadence, 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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 8 level
Fitness App (ABC Trainerize) versus Underwave Training: the parameters behind the verdict, then further details
ParameterFitness App (ABC Trainerize)Underwave Training
PriceFreeFree
Rating4.9 (69K ratings) — better—
Positive reviews55.4% of reviews—
Number of ratings69K — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreemium—
Best chart rank#155 — better—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.513.0 — better
Further details — not scored
Size489 MB30 MB
Age rating4+4+
DeveloperTrainerize.comAugusto Carrara

Bugs and requests

Fitness App (ABC Trainerize)

Reported bugs

5 issues
  • Workout tracking issues
  • Sync problems with other apps
  • Frequent crashes and freezes
  • Account access/login problems
  • Inconsistent performance on iOS devices

Requested features

5 requests
  • Add ability to edit workouts
  • Improve Apple Watch integration
  • Provide more exercise options
  • Add detailed weight/body metric tracking
  • Enable manual meal/activity logging

Underwave Training

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Fitness App (ABC Trainerize)

No in-app purchases

None

Underwave Training

No in-app purchases

Questions

Is Fitness App (ABC Trainerize) free?
Fitness App (ABC Trainerize) is free to download, with no in-app purchases.
Is Underwave Training free?
Underwave Training is free to download, with no in-app purchases.
Do Fitness App (ABC Trainerize) or Underwave Training have ads?
Neither Fitness App (ABC Trainerize) nor Underwave Training shows ads.
Which is updated more often, Fitness App (ABC Trainerize) or Underwave Training?
Fitness App (ABC Trainerize) ships an update every 3 weeks, and Underwave Training every 3 weeks. Most recently, Fitness App (ABC Trainerize) was updated on October 31, 2026 and Underwave Training on October 25, 2026.

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