# FXV Performance: AI Coach

> FXV Performance: AI Coach (iPhone/iPad app by ALEXANDER EDWARD J BIGBY.)

- Source: https://appshunter.io/ios/app/fxv-performance-ai-coach/id6763757298 (this page in markdown: same URL + `.md`)
- Developer: [ALEXANDER EDWARD J BIGBY](https://appshunter.io/developer/1895458053)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 39 MB
- Languages: American English
- Released: 2026-05-10
- Data updated: 2026-06-28
- User reviews in markdown: https://appshunter.io/ios/app/fxv-performance-ai-coach/id6763757298/reviews.md

## What is FXV Performance?

FXV is an AI-coached training app for athletes who want to know why their programme says what it says. No black-box scoring. Every
  number ships with its formula.

  THE PROGRAMME
  A 12-week macrocycle, three 4-week mesos, written from your training history, equipment, and benchmarks. Strength + aerobic concurrent.
  PM sessions slot at least six hours after morning lifts so you don't blunt your own adaptation.

  The plan adapts every morning. HRV down 18%? The engine drops the lifting volume before you wake up. Sleep under 6 hours? Z2 instead of
  intervals. Cycle phase? Each one shapes the week's load. You just open the app and train.

  THE LOAD MODEL
  Two channels — mechanical kilojoules from the bar (mass × ROM × reps × set × eccentric multiplier) and cardiac TRIMP from your real
  heart rate. Both are saved per session. Both have a budget. The drift between prescribed and actual feeds back into next block's
  prescription. Per Banister 1991 + Plagenhoef 1983 segmental masses for gymnastic movements (toes-to-bar, sit-ups, etc.) so accessory
  work isn't double-counted.

  THE COACH
  A real LLM coach with full programme + recovery context. Ask "why is my readiness 67?" and it cites the formula plugged in with your
  numbers. Ask "can I move tomorrow's run earlier?" and it actually adjusts the schedule. Six tool actions: cap RPE on a lift, shorten a
  session, swap an exercise, skip a session, set tempo, pair supersets.

  HEALTH TAB
  Six surfaces: Recovery (4-component readiness, RHR drift, HRV trend, sleep stages), Training Load (ACWR, polarization, strain budget),
  Sleep (4-axis score + 14-day debt), Body (weight, VO₂, body composition, wellness check-in), Tests (FTP, 5K, 2K row, Cooper benchmark
  protocols), Trends (longitudinal VO₂ + strength PRs).

  IN-SESSION
  Strength: full lifts list, current set highlighted, tap-and-log, slide-up rest timer with RPE prompt. Aerobic: pace hero with
  green-when-on-target, live zone bar, screen-on outdoor mode for sunlight running.

  DEVICES
  Apple Health for HRV / RHR / sleep / VO₂. Direct Bluetooth pairing for Polar / Garmin / Wahoo HR straps in-session. GPS run tracking
  with background updates.

  NOT MAGIC
  Every formula is from peer-reviewed research, citations published at fxvperformance.com/methodology. Confidence flags surface where you
  have less than 14 days of data — Coach refers to them when prescribing.

  Free during beta. Bring your bar, your strap, and twelve weeks of intent.

  Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
  Privacy Policy: https://fxvperformance.com/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| FXV Pro Monthly | $14.99 | per month |



## Version history (last 1 release)

### 1.0.1 — 2026-05-10

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-28.*