WODProof vs FLEX Stronger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WODProof
Record, share, and analyze your cross-training workouts. Features include proof-perfect video recording, competition-ready sharing, AI-powered insights, and diverse training programs. Connect with devices and access daily mobility sessions.
- Proof-perfect video recording
- Competition-ready sharing
- AI-powered mobility plans
- 15+ training programs
- Large timer display
- Concept2 and HR monitor connectivity
- Daily mobility sessions
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WODProof: Your Cross-Training Powerhouse Record, share, and level up your fitness with WODProof, the ultimate cross-training app. - Proof-Perfect Recording: Capture every rep and movement with our stable, reliable recorder. Upload instantly and say goodbye to YouTube challenges. - Competition Ready: Share your workouts with unique, cheat-free links. Get the validation you deserve for online competitions. - AI-Powered Insights: Get personalized mobility plans based on your individual needs and see key workout highlights with AI-generated clips. - Train Like a Champion: Choose from 15+ training programs, designed for all skill levels, across Cross-training, gymnastics, weightlifting, and more. - Advanced Features: Large timer display, Concept2 and HR monitor connectivity, cloud backup, and daily mobility sessions. Become a Bionic Athlete with WODProof. Download today! ******************************************************************************************************* SUBSCRIPTION TERMS AND PRICING Calling all new WODProofers! Unlock your fitness journey with a one-time, 14-day free trial, exclusively for first-time users. Explore all the features and find your perfect fit. Payment will be charged to your credit card through your iTunes account at confirmation of purchase. Subscription renews automatically unless cancelled at least 24 hours prior to the end of the subscription period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of renewal. There is no increase in price when renewing. Subscriptions can be managed, and auto-renewal turned off in Account Settings in iTunes after purchase. Once purchased, refunds will not be provided for any unused portion of the term. Payment will be charged to iTunes Account at confirmation of purchase. Terms of use: http://wodproofapp.com/terms-and-conditions/ Privacy policy: http://wodproofapp.com/privacy-policy/
FLEX Stronger
This app revolutionizes weight training by syncing with a sensor to provide real-time performance feedback. Track, manage, and review your training like elite athletes, with automated workouts and group training options. It offers detailed metrics, video recording with data overlay, and a community feature for sharing and downloading workouts.
- Real-time performance feedback
- Velocity-based training (VBT)
- Automated workouts
- Group training for up to three people
- Video recording with synced data
- 1RM prediction
- Workout creation and sharing
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Revolutionise the way you train and prepare in the weights room! The FLEX Stronger app syncs to a FLEX barbell sensor to deliver real-time feedback straight to your device. Track, manage and review training performance just like elite and professional athletes right across the globe, through the Major Leagues, UFC, Premier League and Olympic institutes. Developed by the team at GymAware, FLEX packages everything we learned from delivering gold standard products to the pro ranks into the only VBT system developed specifically for individual use. The smartest system on the market, FLEX automates your entire training experience. Select an exercise. Load some weight. Lift. Completely wireless. No calibration, adjustments or exercise creation required. Perfect for individual athletes, remote coaches and personal trainers. *Performance Metrics & Targets* Precise and immediate feedback on Mean and Peak Velocity, Mean and Peak Power, Distance, Height, Eccentrics, Position and live bar path tracing. Set targets on key performance metrics to benchmark effort across your session. *Group Training* Add other lifters into your session for group training with up to three people. Complete regular training, pre-programmed workouts or even the 1RM prediction with your group. Training partners who complete sessions with you can collect and store their data in their own profiles once the session is done. Training partners can be added or removed from sessions at any time. *Video Mode* Switch to video mode and record your set with synced data overlaid on the saved file. Send to friends, coaches or share online. Handsfree start and stop. Set your device up and lift. Your video will start, stop and crop to capture the set you just completed. *Automated Workouts* Complete workouts that step you through the entire program, from exercise and weight changes to targets and rest times. *Create, Share and Download Workouts* Create custom workouts directly in the app. Let FLEX run you through your new program, or share them via our Community feature with training partners or clients using FLEX. Looking for inspiration, download sessions from any of your connections in Community and complete them yourself. Set targets based on their results and compete and compare over the same workout. *1RM Predictions* Use the automated 1RM prediction protocol to gauge current strength and readiness levels without an actual 1RM attempt. *Multitasking* There are no limits in the FLEX app. Start regular sessions and add in training partners, or start a pre-programmed workout. Background the app and switch on your favourite tunes. Browse your historical results in the middle of your training sessions. Whatever you need is accessible any time. *Community* Create connections in the FLEX community so you can browse their training history, download sessions (complete with their results), send workouts, train in groups. View session data live as it is uploaded set by set, and interact with fist bumps and comments directly on the platform. *Store and Review* All your data is stored and reviewable in History right in your app. Data is securely backed upon our servers and retrieved on your device at any time.
Screenshots
Verdict
The clearest difference is in-app purchases: FLEX Stronger at none against WODProof's 7. FLEX Stronger also leads on ads (none vs shown) and review sentiment (71% vs 39%). WODProof's advantage is rating (4.8 vs 4.4) and ratings volume (845 vs 8). On price, update cadence, device support and iOS requirement 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
Both are free to download. WODProof sells 7 in-app purchases, starting at $6.99 per month. FLEX Stronger asks for nothing beyond the download.
WODProof holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: WODProof has 845 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 39% of WODProof's written reviews are positive against 71% of FLEX Stronger's, so the app with the better star average is not the one people write more warmly about.
WODProof ships an update every 3 weeks, FLEX Stronger monthly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | WODProof | FLEX Stronger |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (845 ratings) — better | 4.4 (8 ratings) |
| Positive reviews | 39.2% of reviews | 71.4% of reviews — better |
| Number of ratings | 845 — better | 8 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 321 MB | 56 MB |
| Age rating | 12+ | 17+ |
| Developer | WODProof LTD | Kinetic Performance Technology Pty Ltd |
Customer experience
WODProof
FLEX Stronger
Bugs and requests
WODProof
Reported bugs
6 issues- Videos not uploading or saving
- Crashes and loses workout data
- Subscription issues and can't cancel
- Mobility testing and training not working
- App freezes and requires constant restarts
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- Incompatible with older devices
Requested features
6 requests- Add free version with just timers
- Improve mobility testing and training
- Add ability to switch camera angles
- Improve video scrubbing and highlights
- Add time cap feature for workouts
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- Improve integration with music playback
FLEX Stronger
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WODProof
- WODProof Membership | Monthly14 Days trial$6.991 Month
- WODProof PRO | Monthly7 Days trial$19.991 Month
- WODProof PRO | 3-months7 Days trial$54.993 Months
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- WODProof Membership | Yearly14 Days trial$54.991 Year
- WODProof Membership | Yearly14 Days trial$59.991 Year
- WODProof PRO | Annual7 Days trial$99.991 Year
- WODProof Competitor | Lifetime$54.99
FLEX Stronger
No in-app purchases









