Performance Dynamics vs The Nook Sauna
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Performance Dynamics
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Guiding you through your health and fitness journey! - Book classes online in just a few clicks - Create your own exercise programmes or select from a range provided by the club - Track your progress from all your workouts - Keep track of your body measurements and progress - Take part in regular fitness challenges - Contact club staff directly - Interact and get to know your fellow members - See all the latest club news, offers and events - Refer Friends to the club online - Recipes Library - Video Workout Library Apple Health App Integration Track your progress with our HealthKit app integration to import and measure your daily steps, distance or calories burnt. Also use HealthKit to import your data from a range of different wearable devices.
The Nook Sauna
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Whatever you're in for, a solo float, a social sweat or a regular weekly ritual. Book your spot, check the schedule for the week, and walk in knowing you're sorted.
Screenshots
Verdict
The clearest difference is update cadence: The Nook Sauna at every 3 months against Performance Dynamics's every 9 months. The Nook Sauna also leads on device support. On price, in-app purchases and iOS requirement 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.
Performance Dynamics ships an update every 9 months, The Nook Sauna every 3 months. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.
| Parameter | Performance Dynamics | The Nook Sauna |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 3 months — better |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPhone, iPod — better |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 55 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | TeamUp Sports | Frankie Dolphin |
In-app purchases
Performance Dynamics
No in-app purchases
The Nook Sauna
No in-app purchases
Questions
Is Performance Dynamics free?
Is The Nook Sauna free?
Which is updated more often, Performance Dynamics or The Nook Sauna?
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