# Anvil Workout

> Anvil Workout is a paid iOS, watchOS, and iPadOS strength training app (one-time purchase, no subscription) for planning workouts, tracking sets and reps, and reviewing progress over time. It works fully offline with no account required, no ads, and no in-app analytics. Workout data stays on your device.

Anvil Workout is developed by IAMJARL and is available on the Apple App Store for iPhone, iPad, and Apple Watch: https://apps.apple.com/app/id6760627760. The app focuses on a streamlined gym experience: users create workout programs with exercises, sets, reps, weight targets, and rest timers, then follow them in real time during training.

## Business model

Anvil Workout is a paid app with a one-time purchase price on the App Store. There are no subscriptions, no in-app purchases, and no ads. All features are included. Future updates are free. A single purchase grants access to the iPhone app, iPad app, and Apple Watch companion app.

## Key features

- **Workout Program Builder** with exercises, sets, reps, weight targets, rest timers, and **supersets** (paired exercises linked for alternating sets)
- **Real-Time Workout Tracking** with haptic rest countdown on phone and watch
- **Apple Watch Companion App** for wrist-based logging: view active set, log reps/weight, skip/complete sets, rest timer wrist haptics, and watch Smart Stack widget (runs fully offline, syncing directly with the iPhone via local WatchConnectivity)
- **iPad Support** with a multi-pane layout (NavigationSplitView) and a two-column active workout screen (displays current set logger on the left, upcoming exercises/sets sidebar on the right)
- **Automatic Personal Record Detection** for weight and reps
- **Progress Charts**: volume over time, weekly frequency, estimated 1RM progression, muscle group distribution
- **Live Activity** on Lock Screen and Dynamic Island during workouts
- **Smart Dashboard** with weekly metrics, workout streak, and training planner
- **Apple Health and HealthKit Integration** (calories burned, heart rate from Apple Watch logged automatically)
- **Per-Exercise History** with PR tracking and estimated 1RM chart
- **CSV Export** of workout history (sessions, exercises, sets, reps, weights)
- **CSV Import** from Strong or Hevy — migrate full workout history from other trackers in one step
- **Plate Calculator** in the active workout to show which plates to load per side for a target weight
- **Program Tags** to organize workout programs by goal or training block and filter the list
- **RPE Tracking** per set (1–10, half steps) for intensity trends, included in CSV export/import
- **Pre-Completion Set Entry** — tap a pending set to enter the actual weight and reps before marking it done
- **Searchable Exercise Library** and workout history
- **100% Offline** — no account, no internet, no ads, no in-app analytics (workout data stays on your device; anonymous crash reporting via Sentry for bug fixing)

## Technical details

- Built with SwiftUI and SwiftData (on-device storage)
- iOS 17.0+, iPadOS 17.0+, and watchOS 10.0+ required
- WidgetKit home screen widget (streak and weekly stats for iPhone; Smart Stack widget for Apple Watch)
- ActivityKit Live Activity (Lock Screen and Dynamic Island for iPhone)
- HealthKit integration for workout sessions, calories, and heart rate
- No backend, no cloud, no third-party analytics in the app (the marketing website uses Umami for anonymous, cookieless page-view counts)

## Links

- [App Store](https://apps.apple.com/app/id6760627760): Download Anvil Workout for iPhone, iPad, and Apple Watch
- [Home](https://anvilworkout.iamjarl.com/): Product page with features
- [Workout Programs](https://anvilworkout.iamjarl.com/programs.html): Catalogue of the six built-in strength programs (Starting Strength, StrongLifts 5×5, Greyskull LP, GZCLP, Upper/Lower, Push/Pull/Legs) with author, frequency, structure, and progression details
- [Offline Workout App](https://anvilworkout.iamjarl.com/offline-workout-app.html): Explains how the app runs fully on-device with no cloud, no account, and no outbound workout data — includes a comparison table vs cloud-based apps
- [Apple Health for Strength Training](https://anvilworkout.iamjarl.com/apple-health-strength-training.html): Details on the HealthKit integration — what gets written (workout sessions), what gets read (calories, heart rate), the Apple Watch companion app, and the permission model
- [No-Subscription Workout App](https://anvilworkout.iamjarl.com/no-subscription-workout-app.html): Explains the one-time purchase business model versus subscription workout trackers, with honest tradeoff comparison
- [Support](https://anvilworkout.iamjarl.com/support.html): Help and contact information
- [Privacy Policy](https://anvilworkout.iamjarl.com/privacy.html): Privacy policy and data practices