HyNext
YUYUAN LIU Health & Fitness iPhoneiPadiPod touch
HyNext is a free Health & Fitness app for iPhone and iPad by YUYUAN LIU. Requires iOS 15.0. Updated October 27, 2026.
- Price
- Free
- on the App Store
- Size
- 43 MB
- Age 4+
- Updated
- Oct 27
- 2026 · v1.6
Screenshots
About HyNext
HyNext. Built for muscle growth. No more working out how much to add next time. HyNext looks at how many reps you actually did in every set and plans your next weights and reps. Every recommendation says where it comes from: research, common coaching practice, or HyNext's own method. The engine plans it for you. If you disagree, you can change it any time. Free ・Generates a program from your training experience, body type and the look you want, your goal, available equipment and training days per week ・Log every set, exercise library with how-to guides, history and personal bests ・Optional sign-in and cloud backup, so your training log comes with you to a new phone Full version (all features free for the first 14 days, counted from the first time you open the app, no payment needed) ・Decides after every workout whether to add weight, hold or drop ・Gives you a little more rest when your reps drop too much between sets ・Explains why you are stuck and what to do next, not just "keep going" ・Adds sets in small steps during a muscle-gain phase, and watches for two weeks after each increase before asking again; suggests a deload when recovery can't keep up ・Make up or skip missed sessions ・Weekly reports, a yearly review, body weight and per-exercise trends ・The evidence and studies behind every recommendation No ads. HyNext full version is an auto-renewing subscription: ・Monthly NT$150 / month ・Yearly NT$1,000 / year ・These are early-bird prices; the actual price and currency are shown in the App Store ・Payment is charged to your Apple ID account when you confirm the purchase ・The subscription renews automatically unless cancelled before the end of the current period; you can manage or cancel it any time in your App Store account settings Privacy Policy: https://hynext.space-yuan.com/docs/legal/en/privacy-policy.md Terms of Service: https://hynext.space-yuan.com/docs/legal/en/terms.md
What’s new
Version 1.6 · Updated October 27, 2026
・No more guessed weights for weighted exercises you are trying for the first time: use “Warm up to find your weight” at the start of your workout, starting with the lightest weight and working up set by set, or choose your own weight ・Quick workouts: set the number of sets for each exercise, with a simpler layout and an estimated workout duration ・Post-workout share cards: resistance-band-only and bodyweight workouts now show total reps and the level used in the session ・Feedback for timed exercises now uses seconds ・Fixed occasional screen flickering when switching exercises, plus text improvements and other small fixes
App privacy
The developer, YUYUAN LIU, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Health & Fitness: Health, Fitness
- Purchases: Purchase History
- Contact Info: Email Address
- User Content: Other User Content
- Identifiers: User ID
Used for: App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Product Interaction
Used for: Analytics, App Functionality
Alternatives to HyNext
Looking for apps like HyNext? Here are 6 similar apps on the App Store. The highest rated is Body Breakthrough - AI Fitness (5.0/5), and all 6 are free to download.
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Body Breakthrough - AI Fitness
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trifit Strength Log
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Vectis: AI Fitness & Diet
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| HyNext | – | Free | October 27, 2026 | |
| Body Breakthrough - AI Fitness | 5.0 / 5 (1) | Free | Oct 27, 2026 | Compare |
| trifit Strength Log | – | Free | Jul 8, 2026 | Compare |
| CFP Tracker - Calorie & Macro | – | Free | Sep 12, 2026 | Compare |
| iOGYM GO | – | Free | Nov 4, 2026 | Compare |
| InnerGarden - Sleep & Relax | – | Free | Sep 21, 2026 | Compare |
| Vectis: AI Fitness & Diet | – | Free | Oct 5, 2026 | Compare |
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