Stackdd PT
Your PT in your pocket
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
A personal trainer in your pocket.
Stackdd PT is a complete coaching system, powered by AI — one place that tracks your training, food, body and activity, and adapts the plan to you as you go. Not another tracker that does one thing and forgets the rest.
Most apps give you a single piece. A food app logs lunch. A workout app counts reps. A tracker draws a line on a chart. None of them talk to each other, and none of them coach. Stackdd brings it together: one coach, working from the full picture, helping you stay consistent and actually hit your goal.
EVERYTHING IN ONE SYSTEM
Training, nutrition, body measurements and daily activity all feed one place. Because it sees everything, the guidance is built on your real history — not generic tips.
TRAINING PLANS THAT ADAPT TO YOU
A plan designed around your goal, experience and equipment — then adjusted as you progress. Log weight, reps and RPE set by set, with rest timed for you. 1,376 exercises with demonstrations, swapped in a tap if a machine's taken.
FOOD LOGGING, MACROS THAT MOVE WITH YOU
Point your camera at the plate and turn a photo into macros in seconds. Your calorie and protein targets adjust based on your progress and training — heavier week, more fuel; trend stalling, a sensible nudge. Plus recipes built around your numbers.
TRACK YOUR BODY, NOT JUST THE SCALE
Weight trend, body measurements and progress photos over time — so you see real change, read against where you're going, not just a single number on a bad morning.
ONE COACH FOR EVERYTHING
The same coach runs the whole loop — check-in, train, fuel, ask, adjust. Ask it anything and it answers with your numbers in hand, makes a sensible call within set guardrails, and explains it in a line. Consistency is the whole game, and the system is built to keep you in it.
BUILT FOR CONSISTENCY
Quick daily check-ins, four rings to close, and a coach that reads the 7-day trend so one heavy meal or one bad night never derails the plan. Small, steady, repeatable — that's how goals get hit.
SUPPORT ON A GLP-1
If you're losing weight with the help of a GLP-1 medication, Stackdd builds your training and nutrition around it — protein targets and resistance training to help you hold on to muscle while the weight comes down, and steady habits for when you reach your goal. (Stackdd does not provide or manage medication; always follow your doctor's guidance.)
WORKS WITH APPLE HEALTH
Steps, sleep and move calories sync automatically, so your home screen and your coach see the full picture without manual entry.
SAFETY BUILT IN
Every reply is checked against ten coaching principles before it reaches you — honest, specific, evidence-led, no false promises. And if a conversation points toward disordered eating or crisis, it steps back and signposts the right help.
British-built. Trains in kg. There for every rep, every meal, every check-in — and it remembers all of it.
SUBSCRIPTION
Start with a 3-day free trial, then choose your plan:
Standard — £19.99/month
Premium — £32/month
Annual plans available at a discount. Cancel anytime in two taps.
Stackdd is a fitness and nutrition tool, not a medical service. Coach guidance is for general fitness and is not medical advice. Always consult a qualified healthcare professional before starting a new exercise or nutrition programme, or if you are on any medication.
Terms of Use (EULA): https://www.stackdd.store/terms
Privacy Policy: https://www.stackdd.store/privacy
Under-the-hood improvements to make Stackdd faster and more reliable.
The developer, Certi technologies ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Certi technologies ltd
- Size
- 82.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Premium Yearly £289.00
- Premium Monthly £32.00
- Standard Yearly £179.00
- Standard £19.99
- Copyright
- © Certi Technologies Ltd