SubZero Gym Support

To cancel your SubZero Gym subscription:

1. Open the Settings app on your iPhone
2. Tap your name at the top
3. Tap "Subscriptions"
4. Find SubZero Gym and tap it
5. Tap "Cancel Subscription"

Your access continues until the end of your current billing period. You can resubscribe anytime.

Go to Settings > Subscription > Restore Purchases. This will restore any previous subscriptions tied to your Apple ID.

Yeti understands natural language for:

• • Exercise changes: "Skip bench press", "Swap this for dumbbells", "Add another set"
• • Weight adjustments: "That was too heavy", "Use 185 for bench", "Make today lighter"
• • Schedule changes: "Skip today", "Swap today with Friday", "Move workout to tomorrow"
• • Workout structure: "I only have 30 minutes", "Add cardio at the end"
• • Physical state: "My shoulder hurts", "I'm exhausted today"
• • Session control: "End workout early", "Longer rest"

Smart AI Features (Pro and above) include:

AI-powered:

• • Post-workout summaries with training intensity analysis
• • Smart warm-ups that prepare you for each session
• • Weekly insights summarizing your training trends

Smart features:

• • Weight/rep suggestions based on history and RIR data
• • Plateau detection alerts
• • Readiness scores using HealthKit data

Yeti Chat (Beta) can answer questions about:

• • Schedule: "What's my workout today?", "Is today a rest day?", "What's tomorrow's workout?"
• • Progress: "What are my PRs?", "What's my bench max?", "How am I doing this week?"
• • History: "Did I work out yesterday?", "What did I do last time?"
• • Body & Readiness: "What's my readiness score?", "What are my measurements?", "What's my body fat?"
• • Weather: "Should I run outside today?", "What's the weather like?"
• • Nutrition (Pro+): "What supplements do I take today?", "What's my daily nutrition?"

• • Download the Yeti model in Settings > AI Assistant (~877MB for Yeti, ~2GB for Yeti Pro)
• • Requires iPhone 12+ for Yeti, iPhone 14+ for Yeti Pro
• • Need ~1GB free storage
• • First use may take 5-10 seconds to load the model
• • Try deleting and re-downloading the model if issues persist

RIR (Reps In Reserve) measures how many more reps you could have done. After each strength set, a popup asks "How many reps left?" with buttons 0-4:

• • 0 (Failure) — Couldn't do another rep
• • 1 (Hard) — 1 more rep possible
• • 2 (Good) — Optimal zone, 2 more possible
• • 3 (Easy) — 3 more reps left
• • 4+ (Too Easy) — Time to increase weight

The AI uses this to suggest better weights. You can long-press any set to add RIR, or disable the popup in Settings.

During rest periods, the app monitors your RIR values to detect fatigue patterns. If you're accumulating too much fatigue, you'll see a weight reduction suggestion:

• • RIR 0 (failure) → 10% reduction suggested
• • Declining pattern (3→2→1) → 5% reduction suggested
• • Consecutive RIR 1s → 5% reduction suggested

Tap 'Apply Reduction' to automatically update all remaining sets with the suggested weight.

Skipping removes a slot from your schedule. All workouts shift forward to fill the gap. You have two options:

A deload week reduces volume by 40-50% to allow recovery. The AI determines when deloads are appropriate based on accumulated training stress, your age, and recovery capacity. Typically they appear every 3-4 weeks of hard training.

The SubZero Gym Watch companion app (Pro and Elite) lets you track workouts from your wrist:

1. Start a workout on your iPhone
2. The workout appears on your Watch automatically
3. Tap 'Start Workout' on Watch
4. Use Digital Crown to adjust weight, +/- for reps
5. Double-tap Done to repeat your last set

Sets sync instantly between devices. You'll also get heart rate tracking, voice announcements, and haptic feedback.

During rest periods, the Watch monitors your heart rate and shows "Ready!" when you've recovered to Zone 2 (light effort). This helps you know when you're physiologically ready for your next set, not just when the timer expires.

Recovery detection can be disabled in iPhone Settings > Watch Features.

'Start Workout' runs SubZero Gym's timer and optionally streams heart rate from your Watch in real-time. This is the full SubZero Gym experience.

'Log with Fitness' lets you log sets on iPhone while Apple Fitness tracks timing and heart rate on your Watch. Use this when you prefer the Fitness app's workout experience but still want detailed set logging.

Both options give you a complete workout record — just different timing sources.

If workouts aren't appearing in Apple Health, check these common issues:

If issues persist, try toggling Apple Health sync off and on in Settings.

Works Offline:

• • Viewing your workout plan
• • Logging workouts (Start Workout, Log After)
• • Viewing workout history
• • Calendar and progress charts
• • Yeti AI features (after model download)
• • Apple Watch companion app

Requires Internet:

• • Generating new workout plans (AI generation)
• • Regenerating plans (injury, goal change, etc.)
• • Generating nutrition stacks
• • iCloud sync (for Pro+/Elite users)
• • Restoring purchases

SubZero Gym offers three levels of data deletion in Settings > Data Management:

IMPORTANT: All deletions sync to iCloud. If you have iCloud Sync enabled, deleting data removes it from ALL your devices permanently.

SubZero Gym features 54 achievements across 9 categories:

• • Workout Count — Complete 1 to 1,000 workouts
• • Total Volume — Lift 10K to 10M lbs total
• • Streaks — Maintain 2-week to 2-year workout streaks
• • Personal Records — Achieve 1 to 100 PRs
• • Consistency — Hit workout completion targets
• • Special/Hidden — Complete hidden challenges (Early Bird, Night Owl, etc.)

Achievements are GLOBAL — they persist across all profiles and are never deleted.

SubZero Gym automatically syncs nutrition data from any HealthKit-connected app (Pro+ and above):

1. Log your meals in MyFitnessPal, Cronometer, MacroFactor, Lose It!, Noom, or any app that writes to Apple Health
2. Your data appears automatically in SubZero Gym's Calendar, Progress Tab, and Supplement Stack
3. Hit your goals to earn achievement badges (Calories on target, Protein goal crushed, etc.)

Targets are based on your Primary Profile's AI-generated nutrition guidelines.