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AI fitness coach

Ask about your training. Get answers from your numbers.

An AI coach that reads what you've logged, from your sets and food to your sleep and labs, so you don't have to explain yourself. Plus a debrief after every workout and weekly and monthly reports you generate when you want them.

Apex Pro + AI, $8.99/month with a 7-day free trial. iPhone and Android.

Apex Stacked home screen with Monthly Insight and Weekly Insight buttons, today's checklist of food, water, mental check-in, sleep and training, and the AI Chat tab in the bottom bar

A coach that has read your log

Ask in plain language. Answers are grounded in what you've logged, not a generic plan.

Training

This week's plan, your last five sessions set by set, training volume and readiness, cardio and recovery from the last 14 days, and your top lifts.

Pro + AI

Body and recovery

Your profile, 30-day health trends, latest measurements, your last 7 nights of sleep and your mood, energy and stress check-ins.

Pro + AI

Food

Your nutrition targets, today's plan, water, fasting, and recent macros.

Pro + AI

Protocols and labs

Your active protocols and, if you opt in to bloodwork sharing, your lab panels with the previous result alongside.

Pro + AI

Your own reports

The summaries and highlights from weekly and monthly reports you've generated.

Pro + AI

Honest about gaps

Turn a section off and the coach is told it's off, so it says so instead of guessing or treating it as nothing logged.

Pro + AI

After every workout

Talk to AI Coach

From the workout complete screen, open a chat about the session you just finished. It starts from your own set count and the volume you moved.

Pro + AI

One-off workouts

Generate an extra session for a date you choose. It doesn't change your weekly plan or your adherence.

Pro + AI

AI fill for custom exercises

Name a new exercise and AI fills in its details. It checks your library for a likely match first and asks before creating a duplicate.

Pro + AI

Plans without AI

Apex Pro builds your training week on your phone, with progressive overload and deload weeks, and no AI involved. Training plans

Apex Pro

Weekly and monthly insights

A written report on your last completed week or calendar month. It's generated only when you tap Generate, never automatically.

What's in a report

An overview, a grid of key numbers compared with earlier periods, "What went well" and "Worth a look", then sections for Training, Body Metrics, Nutrition, Wellbeing, Cycle & Phase, Protocols & Compounds, Bloodwork and Cross-Domain Observations.

Pro + AI to generate

Re-read for free

Reports you've generated stay readable on any plan. Export Data gives you the exact figures behind a report, on any plan. A formatted PDF needs Apex Pro.

Free

Data to include

15 switches control what a report may read. A section you've turned off says so in the report instead of quietly going missing.

Free

Written by code, not AI

Three parts of every report never come from the AI: your protocols shown next to out-of-range labs (with no connection drawn between them), your injury and sick days, and how the numbers were calculated.

Only when there's enough

A report is offered once you've logged enough for that week or month, so you don't spend it on a near-empty period.

Every past week

Weekly Reports lists every completed week since your first logged day, with the status of each and a Generate button.

Pro + AI to generate

Your data and the AI

Is it right for you?

A good fit if you already log your training, food or health numbers and want to ask questions about them, or get a written summary of your week or month without building spreadsheets.

Maybe not if you want medical advice, dosing guidance or a diagnosis. The coach describes your own data, can be wrong, and won't help with dosing, protocols or sourcing. If you'd rather have no AI at all, Apex Pro plans your training on your phone without it.

Questions

What does the AI coach know about me?

Only what you have logged in Apex Stacked and allowed it to read: your profile, recent health trends and sleep, check-ins, nutrition targets and recent food, active protocols, bloodwork if you opt in, this week's plan, your recent workouts set by set, cardio and recovery, top lifts, and your own past reports. If a section is switched off, the coach is told it is off, so it says so instead of guessing.

How much does the AI coach cost?

The AI features come with Apex Pro + AI, $8.99/month with a 7-day free trial. If you already have Apex Pro, the Apex AI add-on adds the same features for $5.99/month, also with a 7-day free trial. AI features include generous monthly limits for personal use. See pricing.

Does my health data get sent to an AI?

Only if you allow it. The app asks first, names Anthropic as the AI provider, and nothing is sent unless you choose "Allow AI features". After that, each AI feature sends the data it needs, through our server, to Anthropic. Apple Health or Health Connect data needs a separate opt-in, and even then only figures calculated on your phone, such as averages, trends and recent daily values, are sent, never your sample-by-sample record. Anthropic keeps what it receives for up to 30 days, longer only if a request is flagged for a policy violation, and does not use it to train its models.

Is the AI coach medical advice?

No. It describes your own logged data and can be wrong. It won't help with dosing, protocols or sourcing for peptides or other substances, and reports never recommend starting, stopping or changing a medication, dose or supplement. Talk to a licensed professional about health decisions and out-of-range lab values.

Are the weekly and monthly reports automatic?

No. A report is written only when you tap Generate. Each one covers your last completed week or calendar month, and is offered only once you have logged enough data for that period. Generating needs Apex Pro + AI. Reports you already have stay free to re-read.

Can I use Apex Stacked without AI?

Yes. The free plan has no AI, and Apex Pro ($2.99/month or $24.99/year) builds your weekly training plan on your phone with no AI involved. AI features only run on Apex Pro + AI, and only after you allow them in the app.

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