The Diet Doc Fit Lab vs Pro Performance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Diet Doc Fit Lab
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With The Diet Doc Fit Lab App, you can manage your membership details, book appointments, and sign up for classes as you work to achieve your fitness goals. - Access digital membership pass - Enroll in classes - Book appointments and view session balance - Edit personal information and view membership details - Stay up-to-date with announcements from your club Download the app today! Features connectivity to Apple Watch (synced to HealthKit app)
Pro Performance
This app serves as a digital companion for members of a fitness center, providing easy club entry and access to class schedules. Users can browse available classes, log their attendance, and receive important updates via push notifications to stay organized with their fitness journey.
- Digital club entry
- Class browsing
- Attendance logging
- Push notifications
- Fitness activity tracking
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Pro Performance App is a free & ad-free companion for Pro Performance Center members, offering digital club entry, class browsing, attendance logging, and push notifications. It's tailored for club-goers to stay organised and keep track of their fitness activities.
Screenshots
Verdict
The Diet Doc Fit Lab and Pro Performance are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
The Diet Doc Fit Lab ships an update every 5 weeks, Pro Performance every 3 weeks. Both last shipped on October 30, 2026.
| Parameter | The Diet Doc Fit Lab | Pro Performance |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (16 ratings) — better |
| Number of ratings | — | 16 — better |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 119 MB | 119 MB |
| Age rating | 4+ | 4+ |
| Developer | Nautilus Connection, LLC | Smart Health Clubs |
In-app purchases
The Diet Doc Fit Lab
No in-app purchases
Pro Performance
No in-app purchases
Questions
Is The Diet Doc Fit Lab free?
Is Pro Performance free?
Do The Diet Doc Fit Lab or Pro Performance have ads?
Which is updated more often, The Diet Doc Fit Lab or Pro Performance?
Other comparisons
