Rivalists vs Stack Up
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rivalists
This app helps athletes and active individuals optimize their health and performance by syncing data from wearables and health apps. It facilitates real-time connection with physical therapists, coaches, or trainers for personalized care and progress monitoring.
- Sync health data from 100+ sources
- Message with PT, Coach, or Trainer
- Access assigned workouts
- Track activity, sleep, and recovery
- Share key metrics securely with providers
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Rivalists™ mobile is designed for athletes and active individuals looking to optimize their health and performance. Our app seamlessly syncs data from your favorite wearables and health apps, making it easy to monitor progress and connect with your Physical Therapist, Coach, or Trainer in real-time. With powerful workout and recovery tracking tools, Rivalists™ empowers your support team to deliver truly personalized care, helping you stay active, healthy, and ahead of your goals. Not using a PT or Trainer? Invite them to join and take your health to the next level. We're continuously improving the platform, with new features and updates shaped by feedback from users like you. Your input is key to helping us build the future of proactive, personalized health. Key Features: - Sync health data from over 100+ sources - Message with your PT, Coach, or Trainer - Access assigned workouts - Track metrics like activity, sleep, and recovery - Securely share key metrics with a provider Join the Rivalists™ community and take control of your active life.
Stack Up
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When performance is measured, performance improves. When performance is measured, and results are reported back, improvement accelerates. - Pearsons Law
Screenshots
Verdict
The clearest difference is update cadence: Rivalists at fortnightly against Stack Up's every 4 months. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rivalists ships an update fortnightly, Stack Up every 4 months. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.
| Parameter | Rivalists | Stack Up |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 82 MB | 39 MB |
| Age rating | 12+ | 4+ |
| Developer | Athleticus Inc | David Chabot |
In-app purchases
Rivalists
No in-app purchases
Stack Up
No in-app purchases
