FormCheck AI vs PerformanceX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FormCheck AI
This AI-powered personal trainer analyzes your exercise videos to provide instant feedback on your squat, deadlift, and bench press form. Improve your technique, prevent injuries, and achieve your fitness goals with personalized guidance.
- AI video analysis for exercise form
- Deadlift, squat, and bench press correction
- Injury prevention guidance
- Personalized AI feedback
- Progress tracking
- Fitness and nutrition articles
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Welcome to FormCheck AI, the premier AI-powered personal trainer designed to help you perfect your form, increase your strength, and transform your body! Struggling with form during workouts? FormCheck AI is here to change that. Our cutting-edge AI analyzes your exercise videos and provides instant feedback on your squat, bench press, and deadlift performance. Unlock your potential and become a stronger, bigger, and healthier version of yourself! PureStrength's Key Functionalities: 1. Deadlift form correction: * Detects shoulder positioning to avoid rounding * Ensures proper hip movement and lat/core tightness * Checks lockout technique for maximum efficiency 2. Squat form analysis: * Monitors depth to ensure optimal muscle activation * Alerts users of any imbalances or alignment issues 3. Bench press guidance: * Provides feedback on bar path and control * Evaluates grip, elbow position, and body mechanics Why choose FormCheck AI? * Achieve your fitness goals with personalized AI feedback * Improve your form to prevent injuries and maximize results * Track your progress and celebrate your milestones * Access a comprehensive library of articles and videos on fitness, nutrition, and wellness Download FormCheck AI now to start your journey towards better form, increased strength, and a healthier lifestyle. Revolutionize your workouts with the power of AI! SUBSCRIPTION INFO: Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed and auto-renewal may be turned off by going to Account Settings after purchase. Support Email: madhav@purestrength.ai Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://purestrength.ai/privacy.txt
PerformanceX
This app uses advanced video analysis and biomechanical algorithms to provide precise jump performance testing and data analysis for athletes and coaches. It offers various jump tests, strength-speed relationship analysis, and functional strength assessments, with detailed biomechanical parameter calculations.
- Vertical jump testing (CMJ, SJ, DJ)
- Strength-speed relationship analysis
- Functional strength testing (Nordic Hamstring)
- Automatic biomechanical parameter calculation
- Video analysis with high frame rate support
- Athlete and team data management
- CSV data export
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PerformanceX是一款专为运动员、教练员和体育科研人员设计的专业运动表现分析应用。通过先进的视频分析技术和生物力学计算算法,为您提供精准的跳跃能力测试和数据分析。 - 垂直跳跃测试系列: CMJ(反向跳) — 经典的反向跳跃测试,评估运动员的下肢爆发力和牵张-缩短循环能力 SJ(蹲跳) — 无反向移动的跳跃测试,精准评估纯力量输出能力 Abalakov(摆臂反向跳) — 允许摆臂的反向跳跃测试,全面评估上下肢协调发力能力 DJ(落体跳) — 从一定高度跳下后立即向上跳跃,评估反应力量和弹性能力 RSImodify(修正反应强度指数) — 专门的反应力量评估测试,量化运动员的快速伸缩复合能力 单腿跳跃 — 单侧肢体力量评估,检测双侧力量不对称性 - 力量-速度关系分析: CMJ-FV(反向跳力量-速度关系) — 深入分析反向跳的力量-速度特征曲线 SJ-FV(蹲跳力量-速度关系) — 无反向移动状态下的力量-速度关系分析 - 水平跳跃与单侧测试: 立定跳远 — 水平跳跃距离测试,评估下肢水平爆发力 - 功能性力量测试: 北欧降(Nordic Hamstring) — 专业的腘绳肌离心力量测试,评估后链肌群力量,预防运动损伤 *自动计算多项生物力学参数: 飞行时间与跳跃高度 起飞速度与平均速度 力、功率与相对功率 冲量与加速度 做功距离等 *强大的数据管理 运动员档案管理 — 记录身高、体重、腿长等关键身体数据 队伍组织管理 — 轻松管理多个运动员和团队 历史数据追踪 — 长期监测训练进步 雷达图对比分析 — 直观比较不同测试结果 CSV数据导出 — 便于深入分析和报告制作 *专业的视频分析 支持240fps高帧率视频拍摄 支持导入已有视频 精确的关键帧提取(离地/落地瞬间) 直观的帧控制操作 【PerformanceX自动订阅服务说明】 订阅选项 提供以下自动续期订阅选项: 专业版月度套餐 专业版年度套餐 订阅内容 订阅后,您将获得以下专业功能: 完整跳跃力学分析数据 无限制的历史记录保存 高级数据对比分析 专业跳跃报告导出 无广告体验 所有价格均包含适用税费。价格可能因所在国家/地区、汇率波动或其他因素而异。我们保留随时调整订阅价格的权利,价格变更前将通知您。 服务条款:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 用户协议:https://docs.qq.com/doc/DRGtwUWxwZkpodGJB?u=ee30bf6d33dc4a14b9a3832cd5aa15e5&no_promotion=1 隐私协议:https://docs.qq.com/doc/DRGRJT0hIemZVYnJz?u=ee30bf6d33dc4a14b9a3832cd5aa15e5&no_promotion=1
Screenshots
Verdict
The clearest difference is price: PerformanceX at Free against FormCheck AI's $0.99. FormCheck AI's advantage is chart position (#94 vs unranked) and update cadence (fortnightly vs monthly). On ads, in-app purchases, monetization model 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
PerformanceX is free to download; FormCheck AI costs $0.99 up front. FormCheck AI sells 6 in-app purchases, starting at $1.99 per 7 days and PerformanceX sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
FormCheck AI ships an update fortnightly, PerformanceX monthly. The most recent releases landed on September 23, 2026 and September 15, 2026 respectively.
| Parameter | FormCheck AI | PerformanceX |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #94 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 472 MB | 119 MB |
| Age rating | 4+ | 4+ |
| Developer | Purestrength Limited | 顽石运动智能科技(北京)有限公司 |
In-app purchases
FormCheck AI
- weekly pro2 variants$1.997 Days
- Discounted Monthly Sub14 Days trial$4.991 Month
- weekly pro$9.997 Days
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- Monthly Subscription$19.991 Month
- Yearly Subscription$19.991 Year
- Discounted Yearly Subscription$99.991 Year
PerformanceX
- 月度会员7 Days trial$2.991 Month
- 年度会员$24.991 Year
- 终身会员$59.99








