# PureStrength (FormCheck AI) vs SHRED

PureStrength (FormCheck AI) records 0 monthly visits with — month-over-month growth and Free pricing. SHRED records 57,430 monthly visits with -15.3% growth and Freemium, Free Trial pricing.

| Metric | [PureStrength (FormCheck AI)](https://openaitools.app/tool/purestrength) | [SHRED](https://openaitools.app/tool/shred) |
| :--- | :--- | :--- |
| Website URL | https://apps.apple.com/gb/app/purestrength/id1621267448 | https://www.shred.app |
| Categories | AI Fitness, AI Coaching, AI Assistant, AI Sports | AI Fitness, AI Assistant, AI Coaching |
| Pricing Model | Free | Freemium, Free Trial |
| Monthly Visits | 0 | 57,430 |
| MoM Growth Rate | — | -15.3% |
| Primary Market | Global | United States |
| Direct Visits | 0 | 9,889 |
| Review Score | 4.1 | 4.2 |
| Saved Count | 1 | 2 |
| Supported Platforms | App | Website |

## PureStrength (FormCheck AI)

PureStrength, now listed on the App Store as FormCheck AI, is a video-based AI personal trainer for the big three powerlifting movements. You record a working set on your iPhone, the app tracks the barbell and key joint positions frame by frame, and it returns plain-language coaching cues on what went right and what needs fixing. Because the models run on the device, your clips are processed locally rather than uploaded to a server.

The strongest part of the app is the depth of its per-lift feedback. For the deadlift it watches shoulder positioning, hip drive and lockout; for the squat it monitors depth, alignment and left/right balance; for the bench press it looks at bar path, control, grip and elbow position. Later releases extended this to bent-over rows and bicep curls, and added on-device 3D rendering so you can rotate a lift and inspect the trajectory of the bar.

The app comes from Purestrength Limited, a small studio that also publishes Larry AI, Deepbarbell and Qutie. It sits firmly in the strength-training niche rather than general fitness: if you compete in powerlifting or take your squat, bench and deadlift seriously, the specific cues are genuinely useful, while anyone looking for a full workout log or calorie tracker will want something broader.

**Pricing & Plans:** Free to download and use as of version 3.0 (January 2025), with optional in-app purchases. The app was previously subscription-based; verify the current pricing and any in-app offers on the App Store page for your region.

- **Deadlift form correction:** Track hip movement, shoulder position and lockout so you avoid a rounded back and get a clean pull.
- **Squat form analysis:** Depth monitoring plus alignment and balance alerts so you activate the right muscles on every rep.
- **Bench press guidance:** Feedback on bar path, control, grip and elbow position across the press.
- **On-device 3D analysis:** In-app 3D rendering and slow-motion playback let you replay each rep and see exactly where technique breaks down.
- **Form library and content:** Articles and videos on lifting technique, nutrition and recovery sit alongside a library of sample lifts.

**Strengths:** Detailed, lift-specific cues for squat, bench press and deadlift rather than generic rep counting.; On-device processing keeps training videos private and works without a constant connection.; 3D rendering and slow-motion replay make it easy to see exactly where form breaks down.; Became free to use in 2025, removing the previous subscription barrier.

**Limitations:** Focused on only three lifts (squat, bench press, deadlift), so it is not a general-purpose workout tracker.; Analysis quality depends on how well you frame and film your set; poor angles produce weaker feedback.; Larger download (~495 MB) because the computer-vision models run on the device.; iOS/visionOS only — no Android or web version.

[Profile (Markdown)](https://openaitools.app/tool/purestrength.md)

## SHRED

SHRED positions itself as a training system rather than a generic workout library. Instead of recycled circuits, it offers coach-built training cycles that auto-progress from beginner to advanced, matched to how many days a week you can train, whether you work out in a full gym, a home setup, or with bodyweight only. The adaptive AI engine sits on top of that programming and suggests your next weight, tunes tempo, and times rest in real time, so you are not left guessing how much to load or how long to pause.

The app deliberately covers two training styles under one membership. Guided Strength Training is structured, progressive, and data-driven, with set/rep logging, rest timers, form guidance, and exercise substitutions. Studio Classes are dynamic and community-driven, spanning HIIT, yoga, dance cardio, and strength circuits with live and on-demand coaching. Progress and preferences carry over between the two modes, so you can switch without losing your history.

Social and accountability features are a big part of the experience: you can build custom challenges for friends and family, see how you stack up on your gym's leaderboard, watch a live workout feed of people training in real time, and sync sessions with a training partner. The platform reports more than 2.7 million active users and 23.5 million completed workouts, alongside a 4.8/5 App Store rating. It is available on mobile with Apple Watch integration, and is operated by Shred Labs, LLC.

**Pricing & Plans:** Freemium with a free tier (limited workout library, basic tracking, standard demos, no personalized programming or AI progression), an annual plan at $119.99/year (~$9.99/month, includes a 7-day free trial), and a monthly plan at $19.99/month. Discounts up to 30% are offered to military members, first responders, medical professionals, teachers, and students.

- **Adaptive AI progression engine:** Real-time AI recommends your next working weight, adjusts tempo, and times rest periods, then continues to adapt as you get stronger, faster, or leaner.
- **Coach-built training cycles:** Programs such as Bulk, Cross-X, Athlete, Signature, Lean-X, and Define auto-progress from day one to advanced, replacing spreadsheet-style planning.
- **Trains to your equipment:** Pick the gear you actually have — full gym, small gym, hotel gym, home setup, or bodyweight only — and SHRED rebuilds the session, with instant substitution if your location changes.
- **Two training styles in one app:** Switch between structured Guided Strength Training and community-driven Studio Classes covering HIIT, yoga, dance cardio, and strength circuits.
- **Community and accountability tools:** Create custom challenges for friends and family, climb your gym's leaderboard, follow a live workout feed, and sync sessions with a training partner.

**Strengths:** Combines coach-written programming with AI-driven weight, tempo, and rest adjustments instead of static plans; Adapts automatically to whatever equipment you have, including bodyweight-only and hotel gyms; Both guided strength training and studio-style classes are included in one membership; Free tier plus a 7-day free trial on the annual plan and up to 30% discounts for key professions

**Limitations:** Personalized programming and AI progression are locked behind the paid plans — the free tier is basic; Annual billing is the only way to reach the ~$9.99/month rate, so the effective monthly price is higher if you pay month to month; Most training content is app-based, so users who prefer in-person coaching still need a separate solution; The breadth of programs, classes, and social features can take some time to navigate at first

[Profile (Markdown)](https://openaitools.app/tool/shred.md)

## Frequently Asked Questions

### How do PureStrength (FormCheck AI) and SHRED compare in monthly traffic?

PureStrength (FormCheck AI) has 0 monthly visits, while SHRED has 57,430. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

PureStrength (FormCheck AI) has a month-over-month growth rate of —; SHRED has -15.3%.

### How does pricing compare?

PureStrength (FormCheck AI): Free. Free to download and use as of version 3.0 (January 2025), with optional in-app purchases. The app was previously subscription-based; verify the current pricing and any in-app offers on the App Store page for your region. SHRED: Freemium, Free Trial. Freemium with a free tier (limited workout library, basic tracking, standard demos, no personalized programming or AI progression), an annual plan at $119.99/year (~$9.99/month, includes a 7-day free trial), and a monthly plan at $19.99/month. Discounts up to 30% are offered to military members, first responders, medical professionals, teachers, and students.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [FitnessAI](https://openaitools.app/tool/fitnessai-com) | 174,453 | -24.6% | Freemium | AI strength training that programs every set, rep and weight | [.md](https://openaitools.app/tool/fitnessai-com.md) |
| 2 | [Planfit - AI Personal Trainer](https://openaitools.app/tool/planfit-ai-personal-trainer) | 137,689 | +3.3% | Free | Free AI personal trainer that builds your gym workout plan in 30 seconds | [.md](https://openaitools.app/tool/planfit-ai-personal-trainer.md) |
| 3 | [Peak Strength](https://openaitools.app/tool/peakstrength-app) | 44,681 | -21.5% | Free Trial | Sport-specific strength programming that tells you exactly what to lift | [.md](https://openaitools.app/tool/peakstrength-app.md) |
| 4 | [BodBot](https://openaitools.app/tool/bodbot-com) | 25,589 | -26.8% | Freemium | An AI personal trainer and nutritionist that adapts every set, rep and meal to your body | [.md](https://openaitools.app/tool/bodbot-com.md) |
| 5 | [Trainer+ by Vitruvian](https://openaitools.app/tool/vitruvianform-com) | 18,126 | -41.4% | Paid | An all-in-one digital home gym with AI and expert coaching | [.md](https://openaitools.app/tool/vitruvianform-com.md) |
| 6 | [MyCoach Ai](https://openaitools.app/tool/mycoachai-com) | 15,959 | +47.2% | Free Trial, Paid | One branded app for nutrition, training and client check-ins | [.md](https://openaitools.app/tool/mycoachai-com.md) |
| 7 | [AI Cycling Coach](https://openaitools.app/tool/ai-cycling-coach) | 8,837 | +32.3% | Free Trial, Paid | Adaptive AI cycling coaching built on your own training data | [.md](https://openaitools.app/tool/ai-cycling-coach.md) |
| 8 | [JuggernautAI](https://openaitools.app/tool/juggernautai-app) | 6,909 | -45.3% | Free Trial, Paid | Personalized powerlifting and strength programs that adapt to every session | [.md](https://openaitools.app/tool/juggernautai-app.md) |
| 9 | [Kiwi Fitness](https://openaitools.app/tool/kiwi-fitness) | 5,785 | +220% | Freemium, Free Trial | AI personal trainer that builds adaptive strength workouts for home and gym | [.md](https://openaitools.app/tool/kiwi-fitness.md) |
| 10 | [SmartGym](https://openaitools.app/tool/smartgym) | 4,332 | -17.9% | Freemium, Free | An AI workout app that builds and adapts your training plan | [.md](https://openaitools.app/tool/smartgym.md) |

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Source: https://openaitools.app/compare/purestrength-vs-shred

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