Comparison

Worldgate Spa vs SubZero Gym

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Worldgate Spa

Easily book spa appointments and connect with social media pages directly from your mobile device. Streamline your wellness experience with convenient access to services.

Highlights
  • Book spa appointments
  • Access social media pages
  • Convenient mobile booking
Features
Read full description

Download the Worldgate Spa app today to book your spa appointment! You can also click through to our social pages! Download the app today!

About

SubZero Gym

Features
Read full description

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/

Screenshots

Worldgate Spa3 screens
SubZero Gym4 screens

Verdict

The call

The clearest difference is in-app purchases: Worldgate Spa at none against SubZero Gym's 10. Worldgate Spa also leads on iOS requirement (14.0 vs 18.6). SubZero Gym's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 weeks). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SubZero Gym sells 10 in-app purchases, starting at $3.99 per month. Worldgate Spa asks for nothing beyond the download.

UpkeepUpdate frequency

Worldgate Spa ships an update every 6 weeks, SubZero Gym every 3 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Worldgate Spa versus SubZero Gym: the parameters behind the verdict, then further details
ParameterWorldgate SpaSubZero Gym
PriceFreeFree
Rating2.3 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 6 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS14.0 — better18.6
Further details — not scored
Size96 MB92 MB
Age rating4+4+
DeveloperArch Apps L.L.C.ShadowPing LLC

In-app purchases

None

Worldgate Spa

No in-app purchases

10 purchases

SubZero Gym

Subscriptions10
  • Basic Monthly$3.991 Month
  • Pro Monthly$7.991 Month
  • Elite Monthly$14.991 Month
Show 7 more
  • Pro+ Monthly$15.991 Month
  • Elite+ Monthly$29.991 Month
  • Basic Annual$39.991 Year
  • Pro Annual$79.991 Year
  • Elite Annual$149.991 Year
  • Pro+ Annual$159.991 Year
  • Elite+ Annual$299.991 Year

Questions

Is Worldgate Spa free?
Worldgate Spa is free to download, with no in-app purchases.
Is SubZero Gym free?
SubZero Gym is free to download, with in-app purchases available.
Do Worldgate Spa or SubZero Gym have ads?
Worldgate Spa shows ads; SubZero Gym does not.
Which is updated more often, Worldgate Spa or SubZero Gym?
Worldgate Spa ships an update every 6 weeks, and SubZero Gym every 3 days. Most recently, Worldgate Spa was updated on November 3, 2026 and SubZero Gym on October 30, 2026.

Other comparisons