Principled Fitness
Maximize your fitness outcomes
Archived App (Last seen on 11 Oct 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
Visualize your workouts with a dynamic muscle map that highlights which muscles you've trained, missed, or partially worked. Log sets, track progress, and get personalized guidance for your fitness journey. Features include macro tracking, barcode scanning for food logging, and on-device form analysis.
What's New in Principled Fitness
3.2.1
August 11, 2026
The clarity release. One plain vocabulary for the muscle map, everywhere: trained, some work, untouched, rest it. The legend, the weekly summary, the drill-down, the explainer, and VoiceOver now all say the same words. A truth pass: we found eight places the app said something that wasn't true and fixed every one. Settings that described features that don't exist are gone, "Most behind" now actually lists what's most behind, and the map no longer promises credit it never grants. Words mean one thing now: every number you aim at is a "target", and the built-in Zone-2 pin is honestly renamed "Cardio minutes" — it counts all cardio minutes. (Pins you renamed yourself are kept.) New in Fuel: the protein-gap card. Short on protein today? See meals from your own history that would close the gap. Fixed: the lock-screen rest timer is readable in light mode.
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FAQ
What is Principled?
Principled is a health and fitness app that provides a visual muscle map to track your workouts and log your nutrition. It focuses on private, on-device data storage without requiring an account.
Does Principled have ads?
No, Principled is ad-free. It does not contain any advertisements or third-party ad SDKs, ensuring a private and uninterrupted user experience.
What devices does Principled support?
Principled is available for iPhone and Apple Watch. It requires iOS 17 or later.
How does Principled handle user data privacy?
Principled is private by default, with no account required. Your data is stored on your device, and you can export or erase it at any time. Apple Health integration is opt-in and data is only read for display or written back after workouts.
Can I track my nutrition with Principled?
Yes, Principled includes a 'Fuel' tab for tracking full macros against your targets. You can log meals via barcode scan, nutrition label scan, search, or manual entry.
What are the key features for workout tracking in Principled?
Key features include fast set logging with prefilled rows, automatic PR detection, a rest timer with Live Activity, and on-device form check for posture analysis.
How often is Principled updated?
The app was last updated on July 14, 2026, with version 3.0.0. This indicates active development and regular updates.
What is the user sentiment for Principled?
Based on the provided data, Principled has a perfect 5.0-star rating from 1 review, suggesting very positive initial user sentiment.
