# SubZero Gym — Your AI Personal Trainer > Your AI Personal Trainer (iPhone/iPad app by ShadowPing LLC.) - Source: https://appshunter.io/ios/app/subzero-gym/id6755252688 (this page in markdown: same URL + `.md`) - Developer: [ShadowPing LLC](https://appshunter.io/developer/1826310023) - Category: Health & Fitness, Lifestyle - Price: Free - Age rating: 4+ - Requires: iOS 18.6 · 46 MB - Languages: Arabic, French (France), German (Germany), Greek, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Vietnamese - Released: 2026-01-19 - Data updated: 2026-01-26 - User reviews in markdown: https://appshunter.io/ios/app/subzero-gym/id6755252688/reviews.md ## What is SubZero Gym? SubZero Gym is a complete fitness platform that puts a personal trainer in your pocket. Generate AI-powered workout plans, track every rep, monitor your recovery, and crush your goals — whether you train at a full gym, at home with dumbbells, or anywhere in between. PICK YOUR AI, BUILD YOUR PLAN Choose from 7 AI providers — Claude, GPT, Gemini, Grok, DeepSeek, Groq, or Perplexity — and 15 models. Generate 2 to 12-week progressive programs with periodization: Foundation, Build, Peak, and Deload phases. Plans adapt to your equipment (65+ types), schedule, and goals. Got injured? Changed your schedule? AI regenerates your plan while preserving progress. YETI: YOUR ON-DEVICE AI (Basic and above) Yeti runs locally on your iPhone — no internet required, instant responses. Workout Control (98 Commands): "Skip bench press." "My shoulder hurts." "Go lighter." "Swap to dumbbells." "Only have 30 minutes." "Add a set." Coaching: "How do I do this exercise?" — form tips, muscles, technique. "Should I train today?" — checks readiness. "Am I plateauing?" — analyzes progress. Schedule: "Swap today with tomorrow." "Skip today." "I need rest." AI Generation: Post-workout summaries with coaching tips. Weekly insights with volume trends. Personalized warm-ups based on today's workout. (Pro and above) SMART FEATURES (Pro and above) • Smart weight suggestions from your history • Readiness score from sleep, HRV, and resting heart rate • Plateau detection with intervention strategies • Effort PR detection — same weight at lower RIR = strength gain • Mid-workout fatigue detection with weight adjustment suggestions All local. Your data never leaves your device. TRAIN YOUR WAY • iPhone only — workout logging, rest timer, PR detection, Live Activity • iPhone + Apple Watch — real-time HR, voice announcements, haptic feedback • Log on iPhone while Apple Fitness tracks HR on Watch — data merges automatically • Apple Watch standalone — complete workouts from your wrist TRACK EVERYTHING • 8 PR types: max weight, reps, volume, 1RM, effort PRs, distance, pace, duration • RIR tracking with intensity analysis • Muscle recovery heat map — 13 muscle groups, tap for details • Volume trends, frequency charts, complete workout history BODY COMPOSITION • Weight tracking with smart scale sync and trend charts • 12 body measurements with progress indicators • Encrypted progress photos — AES-256, Face ID required, stays on device NUTRITION & SUPPLEMENTS (Pro and above) • AI supplement stacks with research citations from PubMed • Three tiers: Essential, Beneficial, Optional with daily timing • Sync from MyFitnessPal, Cronometer, or any HealthKit app • Macro tracking with AI-personalized targets 54 ACHIEVEMENTS, 9 CATEGORIES Bronze through Diamond tiers. Workouts, volume, streaks, PRs, cardio, consistency, nutrition. Full-screen unlock celebrations. Shareable achievement cards. APPLE ECOSYSTEM • 8 Home Screen + 5 Lock Screen widgets • Live Activity & Dynamic Island during workouts • 4 Control Center controls • 7 Siri Shortcuts • WorkoutKit sync to Apple Fitness • Focus Filters for notification control • Apple Journal integration • iCloud sync across devices (Pro+ and above) • Family Sharing up to 6 members (Pro+/Elite+) 550+ EXERCISES. 65+ EQUIPMENT TYPES. Full gym, home gym, hotel gym, bodyweight only — SubZero adapts to what you have. PRIVACY FIRST All data stored locally. No ads. No third-party analytics. Progress photos encrypted. AI requests processed but never stored. 6 TIERS • Free: Core tracking, 1 plan/month • Basic ($3.99): Yeti AI, 98 commands • Pro ($7.99): Smart AI, Watch app, widgets • Pro+ ($15.99): iCloud sync, Family Sharing • Elite ($14.99): Unlimited plans, research citations • Elite+ ($29.99): Everything + Family Sharing Train smarter. Track everything. Achieve more. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Version history (last 4 releases) ### 1.2.2 — 2026-01-25 Thank you for being part of the SubZero Gym community. We're always working to make your training experience even better. Here's what's new in this update: Exercise Form Database Every exercise now includes expert-written form cues and instructions, ensuring consistent quality guidance. Form data loads locally for faster plan generation and instant guidance when Yeti swaps exercises. Yeti Chat (Beta) Ask Yeti any fitness question and get conversational responses with full context of your training. 31 specialized tools cover workouts, progress, weather, body composition, and more. New Features • Time-aware AI - Yeti knows the current date/time for schedule questions • Weather integration - Ask about conditions for outdoor workouts • Body fat estimation using CUN-BAE formula • Streak tracking for consecutive workout weeks • Upgraded Yeti model with improved responses • Enhanced server security with cryptographic signing Improvements • Smarter plan recovery - auto-retries when servers are busy • Better resume if plan generation is interrupted • Clearer error messages with one-tap retry • Improved Yeti Profile Validator accuracy • Better AI response parsing • Standardized Yeti branding • Smarter exercise swaps from your equipment profile • Equipment badges wrap to show full names • Unified muscle database for consistency Coming Soon • Multi-language support (localization groundwork complete) ### 1.2.1 — 2026-01-21 Thank you for being part of the SubZero Gym community. We're always working to make your training experience even better. Here's what's new in this update: Yeti Chat (Beta) Ask Yeti any fitness question and get conversational responses with full context of your training. 31 specialized tools cover workouts, progress, weather, body composition, and more. New Features • Time-aware AI - Yeti knows the current date/time for schedule questions • Weather integration - Ask about conditions for outdoor workouts • Body fat estimation using CUN-BAE formula • Streak tracking for consecutive workout weeks • Upgraded Yeti model with improved responses Improvements • Improved Yeti Profile Validator accuracy • Better AI response parsing • Standardized Yeti branding • Smarter exercise swaps from your equipment profile • Equipment badges wrap to show full names • Unified muscle database for consistency ### 1.2.0 — 2026-01-20 Thank you for being part of the SubZero Gym community. We're always working to make your training experience even better. Here's what's new in this update: Yeti Chat (Beta) Ask Yeti any fitness question and get conversational responses with full context of your training. 31 specialized tools cover workouts, progress, weather, body composition, and more. New Features • Time-aware AI - Yeti knows the current date/time for schedule questions • Weather integration - Ask about conditions for outdoor workouts • Body fat estimation using CUN-BAE formula • Streak tracking for consecutive workout weeks • Upgraded Yeti model with improved responses Improvements • Smarter exercise swaps from your equipment profile • Equipment badges wrap to show full names • Unified muscle database for consistency Fixes • Fixed subscription validation for expired purchases Have feedback or found a bug? We'd love to hear from you at subzerogym.app/subzerogym/support ### 1.1.2 — 2026-01-19 No release notes. ## More apps by ShadowPing LLC - [MessageMaster](https://appshunter.io/ios/app/messagemaster/id6755541810) All apps by ShadowPing LLC: https://appshunter.io/developer/1826310023 --- *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 2026-01-26.*