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.
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.
- Client engagement tools
- Online training plan delivery
- Nutrition and habit coaching
- Progress tracking
- In-app messaging and groups
- Customizable workouts
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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.
Underwave Training
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Train breathing, breath holds, and mental control with the Underwave Method — trusted by elite ocean athletes.
Screenshots
Verdict
The clearest difference is chart position: Fitness App (ABC Trainerize) at #170 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.
| Parameter | Fitness App (ABC Trainerize) | Underwave Training |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (69K ratings) — better | — |
| Positive reviews | 55.4% of reviews | — |
| Number of ratings | 69K — better | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Freemium | — |
| Best chart rank | #170 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 489 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Trainerize.com | Augusto 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
Fitness App (ABC Trainerize)
No in-app purchases
Underwave Training
No in-app purchases
Questions
Is Fitness App (ABC Trainerize) free?
Is Underwave Training free?
Do Fitness App (ABC Trainerize) or Underwave Training have ads?
Which is updated more often, Fitness App (ABC Trainerize) or Underwave Training?
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