4D Gym vs Project Mood
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
4D Gym
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Download the 4D Gym app to easily book classes and manage your fitness experience - anytime, anywhere. Make a reservation, get added to a wait list, check your profile and membership status, and more – all from your device. Visit https://www.4dgyms.com/ to learn more.
Project Mood
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Features: -Purchase Class Packs and Memberships Easily browse and purchase our class packs or membership options -View our schedule Filter classes by type to find the perfect fit for your routine. -Manage your reservations Book your class reservations with ease. Keep track of your upcoming classes and manage your schedule to stay organized and committed to your fitness goals.
Screenshots
Verdict
The clearest difference is update cadence: Project Mood at every 3 weeks against 4D Gym's every 13 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.
4D Gym ships an update every 13 months, Project Mood every 3 weeks. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.
| Parameter | 4D Gym | Project Mood |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 13 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 31 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | The Trustee for ACMO Family Trust | Project Mood Pty Ltd |
In-app purchases
4D Gym
No in-app purchases
Project Mood
No in-app purchases
