Question 1

What is Carbyne Lab?

Accepted Answer

Carbyne Lab is a personal training PWA (Progressive Web App) for tracking workouts, nutrition, and body metrics. It features auto-periodized program generation, an exercise library with YouTube tutorial links, real-time motion analysis (Motion Lab), AI-powered meal logging with photo recognition, AI Chat assistant, in-app text and voice messaging between trainers and trainees, video calling with your coach (coming soon), and tools for trainers to manage their clients. All core logging features are free and unlimited.

Question 2

How do I install the app on my phone?

Accepted Answer

On iOS Safari, tap the Share button and select "Add to Home Screen." On Android Chrome, tap the three-dot menu and select "Add to Home Screen" or "Install App." This gives you a full-screen app experience without needing the App Store or Play Store.

Question 3

What subscription plans are available?

Accepted Answer

There are four plans: Free ($0, unlimited logging but no premium features), Personal ($2/mo, full access including Motion Lab, AI Chat, and Generate Program), Basic ($5/mo, trainer dashboard with up to 10 trainees), and Premium ($10/mo, everything in Basic plus Motion Lab, AI Chat, Generate Program, and up to 30 trainees). All plans are free during the beta period. If you link to a trainer, your Personal plan fee is automatically waived.

Question 4

How do I link to a trainer?

Accepted Answer

You can link to a trainer in two ways: (1) During sign-up, enter the Trainer Code provided by your trainer. (2) After sign-up, go to Settings and enter the code under "Link to a Trainer." Your trainer can also send you an invite from their dashboard. Once linked, your trainer can view and manage your workouts, nutrition, and body metrics. Your subscription is automatically upgraded to Personal (waived) while linked.

Question 5

What happens if I remove my trainer?

Accepted Answer

Removing your trainer (or your trainer removing you) will automatically downgrade your subscription from Personal to Free. You will keep unlimited logging but lose access to Motion Lab, AI Chat, and Generate Program. You can link to a new trainer or upgrade to a paid plan at any time in Settings.

Question 6

How do training cycles and weeks work?

Accepted Answer

Workouts are organized in a hierarchy: Cycles > Weeks > Days. Cycles represent training blocks (e.g., hypertrophy, strength, peaking phases). Each cycle contains weeks (microcycles), and each week contains your daily workouts. You can reorder cycles and weeks via drag-and-drop, duplicate them, and edit their names and notes.

Question 7

How does the Workout Program Generator work?

Accepted Answer

The Program Generator creates a complete 12-week periodized training program based on your fitness goal (fat loss, hypertrophy, strength, or general fitness), training days per week (2–6), session duration (30–120 min), and fitness level (beginner, intermediate, or advanced). Beginners get more machine/cable exercises and fewer sets, while advanced users get free-weight compounds and Olympic lifts. The program is auto-periodized into Foundation, Building, Peak, and Deload phases. Find it under the Workouts tab by tapping "Generate Program."

Question 8

How does the Motion Lab work?

Accepted Answer

Motion Lab uses your device camera and on-device pose estimation to count reps and analyse form in real-time. Supported exercises include Squats, Push-ups, Deadlifts, and Pull-ups. There is also a Gait Analysis feature. Position your phone so your full body is visible and follow the on-screen guide.

Question 9

How do I log a meal with a photo?

Accepted Answer

On the Nutrition page, tap "Log Meal" and use the camera or photo picker. The app uses AI to analyse the food in the image and estimate macros (calories, protein, carbs, fat). You can edit the values before saving. Meals can be grouped together (e.g., breakfast, lunch, dinner).

Question 10

What is the Daily Calorie Goal?

Accepted Answer

You can set a daily calorie target in Settings. Once set, the Nutrition page displays a progress bar showing how many calories you've logged versus your goal for the day. The 14-day nutrition chart at the bottom of the Nutrition page shows your calorie and macro trends over time.

Question 11

How do I use the exercise history (Past button)?

Accepted Answer

When editing a workout, each exercise has a "Past" button. Tapping it shows your previous entries for that exercise across all workouts — including sets, reps, weight, and rest times — so you can track progression and decide on your next working weight.

Question 12

What exercise videos are available?

Accepted Answer

Many exercises in the library include linked YouTube tutorial videos from reputable fitness channels such as Renaissance Periodization, Athlean-X, Jeff Nippard, Squat University, and ScottHermanFitness. Look for the YouTube icon next to the exercise name when browsing the exercise library.

Question 13

Can I message my trainer?

Accepted Answer

Yes. If you are linked to a trainer, you can send and receive text and voice messages via the Messages tab. You can also edit or delete your own messages. Trainers can message their trainees from the trainee detail page. Messages are private between you and your trainer.

Question 14

How do I send a voice message?

Accepted Answer

In the chat, when the text input is empty, tap the microphone icon to start recording. The app will request microphone access if not already granted. Tap the stop button to send the voice message. Your trainer (or trainee) will see a play button to listen to the recording.

Question 15

Is video calling with my coach available?

Accepted Answer

Video calling is currently in development and will be available soon. It will allow you to schedule and join live video sessions with your trainer for real-time coaching, form checks, and personalized guidance.

Question 16

Can I export my data?

Accepted Answer

Yes. Go to Settings and use the Data Export section to download your workout logs as a CSV file. This includes all exercises, sets, reps, weights, and dates.

Question 17

What calculators are available?

Accepted Answer

The Stats page includes TDEE (Total Daily Energy Expenditure), BMI (Body Mass Index), and Body Fat percentage calculators. Your height and gender from Settings are pre-filled automatically.

Question 18

How do I change my nationality or language?

Accepted Answer

You can set your nationality and preferred language (English or Chinese) during sign-up. After account creation, go to Settings and update them in the account section.

Question 19

Is my data private?

Accepted Answer

Your workout, nutrition, and body metrics data are stored securely in our database and only accessible to you (and your trainer, if linked). Progress photos are stored locally on your device and are never uploaded to any server.

Question 20

The app isn't working offline — what should I do?

Accepted Answer

Make sure you've visited the app at least once with an internet connection so the service worker can cache the necessary files. After that, core pages should load offline. Note that features requiring the database (logging new data, fetching history) need a connection.

Question 21

How do I report a bug or suggest a feature?

Accepted Answer

Go to Settings and tap "Suggestions / Report Issues." This opens a feedback form where you can leave your name, phone number, and email (all optional) along with your message. Include as much detail as possible — device, browser, steps to reproduce, and screenshots if applicable.

Question 22

How do I delete my account?

Accepted Answer

Go to Settings and scroll to the very bottom. You will find the option to delete your account. This permanently removes all your data including workouts, nutrition logs, body metrics, and messages. This action cannot be undone.

Frequently Asked Questions - AI Personal Training

Frequently Asked Questions - AI Personal Training