# b4-app: AI Batting Partner — user reviews > 62 indexed App Store user reviews of b4 by KeepTossingLab, rated 4.30/5 from 158 ratings. - Source: https://appshunter.io/ios/app/b4-app-ai-batting-partner/id1612791859/reviews - App overview in markdown: https://appshunter.io/ios/app/b4-app-ai-batting-partner/id1612791859.md - Rating breakdown: 5★ 115 · 4★ 15 · 3★ 6 · 2★ 5 · 1★ 17 ## What do users think of b4? Overall sentiment: positive **Pros** - ✅ Accurate exit velocity readings matching professional equipment - 📊 Real-time swing analysis and biomechanics feedback - 🎯 Launch angle tracking is precise and reliable - 👨‍👧‍👦 Suitable for all ages and skill levels - 🏋️ Effective tool for identifying and fixing swing weaknesses - 📱 User-friendly interface and quick setup - 🎬 Swing path visualization and video comparison features - 💪 Helps track progress over time and maintain motivation - 🏆 Clutch mode for pressure situation training - 🤝 Responsive developer support and customer service - 💰 Good value for serious players and coaches **Cons** - 🐛 Inconsistent exit velocity readings (off by ±15%) - 🐛 Intermittent detection failures after initial readings - ❌ Login and authentication issues preventing app access - ⚠️ Temperature sensitivity affecting accuracy above 80°F - 🔧 Unreliable setup requiring multiple attempts - 💸 Premium subscription required for full features - 📱 Incompatible with older iPhone models - ⏱️ Lengthy setup process despite claims of quick setup - 🚫 App crashes and stops working without explanation - 😞 Poor customer support response times **Commonly reported bugs** - Exit velocity readings fail after first swing - Login fails repeatedly even after reinstalling app - App stops providing readings mid-session - Inaccurate measurements in certain temperature conditions - Setup configuration not recognized despite proper calibration - App crashes and becomes unresponsive - Inconsistent accuracy across different users and conditions **Most requested features** - Distance tracking in feet for hit balls - More in-depth analytics and statistics - Support for older iPhone models - Enhanced data visualization and reporting ## Newest reviews (14 of 62) ### 4/5 — Game-Changing Training Tool! *2026-02-06* Fantastic! It accurately tracks EV readings and helps me analyze my swing like never before. It feels like having a real coach in my pocket! ### 4/5 — Great app *2025-08-30* This app works really well, but every few times I swing it just gives me no reading even though it gave me readings before, also I would love to see how far I hit the ball in feet. Overall good app but could use some changes. **Developer response:** Hi Danny1846, thanks so much for your feedback! Regarding the occasional swings with no reading, feel free to DM us on Instagram (@b4.app) or email us at support@b4-app.com. We’d be happy to help. Also, great idea on showing distance! That’s already on our roadmap, and we’re excited to bring it to a future update so you can see how far your hits travel. ### 4/5 — Won’t work *2025-05-02, version 2.5.8* I set it up properly it still won’t work I don’t understand. ### 5/5 — Great *2025-04-30, version 2.5.8* Great app ### 5/5 — Quick Setup *2025-03-27* Takes a second to set up, but works great ### 5/5 — Focused Training *2025-03-27, version 2.5.4* Training feels more focused with this ### 5/5 — Pretty Solid *2025-03-26, version 2.5.4* Solid app ### 5/5 — Launch Angle Win *2025-03-26, version 2.5.4* Launch angle feedback is spot on ### 5/5 — Track Your Progress *2025-03-26* Helps me track my progress week to week. ### 5/5 — Needs Older iPhone Support *2025-03-25* Not bad, just wish it worked with older iPhones ### 5/5 — Fixed My Bat Path *2025-03-25, version 2.5.4* This helped me fix my bat path ### 5/5 — Perfect for Hitters *2025-03-24, version 2.5.4* Would recọmmend for any serious hitters ### 5/5 — Daily Tool *2025-03-24, version 2.5.4* I use it every day after practice. Super useful ### 5/5 — Feels Like a Coach *2025-03-23, version 2.5.4* It’s like having a coach in your pocket ## Most critical reviews (10 lowest-rated) ### 1/5 — Sheldon *2025-07-10, version 2.5.10* Really I had to pay you could have gotten 5 stars but I had to pay so you get a 1 star ### 1/5 — Terrible *2025-06-13, version 2.5.10* Just stopped working wasted my money trash ### 1/5 — It doesn’t do anything *2025-06-12, version 2.5.10* I might be doing smth wrong but I tried it for 30 minutes and it didn’t try to do anything there was no reads ### 1/5 — Login in problem *2025-06-12, version 2.5.10* I cannot sign up when I download the app it keeps saying failed logging and no matter if I delete the app and redownload the app, restart my phone, or anything it won’t allow me to login ### 1/5 — Exit velocity *2024-11-15, version 2.4.2* At first I thought it was good but it started to not track the velo anymore it’ll detect the first one but the next 13 nothing just the launch angle ### 1/5 — Inaccurate Readings *2024-10-13* I reached out via email to “b4” and didn’t receive a reply on how to resolve my issues. It has been over a week now with no response. I contacted them through their support link on the app. I have tried baseballs and softballs. I have tried lower pitching and higher pitching. I have switched batters. I have double and triple checked the setup and measurements. Nothing I have tried has lead to accurate Exit Velocity (EV). We’re hitting balls over 300’ fences and the highest EV reading we get is less than 65. I canceled the premium plan today. I’m seeing better readings on the reels than we get and I feel like I’ve put more effort into figuring this out than most would. **Developer response:** Hi JustGeaux, Thank you for reaching out and sharing your feedback. We aim to respond to all inquiries within a couple of weeks, so please ensure your email address is correct. You’re also welcome to contact us directly at contact@b4-app.com or DM us on Instagram at b4.app for quicker assistance. Regarding your concerns with Exit Velocity (EV) readings, we’d be happy to work with you to refine the setup and configurations to improve accuracy. Every field setting and variation can slightly impact readings, and we’re committed to helping you achieve the most accurate data possible. Please feel free to send us any videos, photos, or additional notes about your setup to help us troubleshoot specific details. Thank you for your patience and for allowing us the opportunity to enhance your experience with b4-app. We look forward to getting you back on track. ### 1/5 — Bad app *2024-06-21, version 2.3.2* Doesn’t let me log in ### 2/5 — Try free sample first *2025-06-23, version 2.5.10* Nice user interface. Not accurate. Velo metrics are off by roughly +\- 15% ### 2/5 — Good but bad *2024-09-11, version 2.3.6* It seems like it works for certain people and i don’t know the conditions it’s supposed to work at but the ev seems incredibly off. ### 3/5 — Inaccurate measurements *2025-05-10* It is only sometimes accurate and it takes forever to set up. It is hit or miss. When it works it works very well **Developer response:** Thanks for the feedback, CadenLee20! Accuracy can be affected by lighting, setup, and other factors. We’re constantly working to make it easier to use. Feel free to reach out at contact@b4-app.com or DM us @b4.app. We're happy to help! ## Most praised reviews (10 highest-rated) ### 5/5 — My Favorite Batting App! *2026-02-08* Hands down my favorite batting app! The clutch mode is an absolute game-changer—perfect for simulating pressure situations. I love how responsive and realistic it feels. This app is a must-have. Highly recọmmend for players looking to level up their game! ### 5/5 — Accurate EV Insights for Batting Practice *2026-02-07* I love how this app gives accurate Exit Velocity data right away. It's easy to use and adds real depth to my training. It makes it easy to identify weaknesses and track progress. ### 5/5 — Fun and Easy AI Batting Practice *2026-02-04* Great for kids! It's simple to use and fun. Very engaging for young players. Highly recọmmended! ### 5/5 — Great tool for biomechanics! *2025-07-16* I began to use this app for my son and for some players I regularly train in private lessons (8-10yrs). At their age they may understand the concepts of how their body should move for an efficient swing, but they also may not be able to feel or tell the difference when they hit the ball with a bad swing or a good swing. They may just think “I hit it hard” even though they casted their hands out and came around the ball for example. So this tool is great as it gives real time feedback and showcases the difference between a “bad habit” swing vs a good swing we are training on. As a coach, I recommend. ### 5/5 — Great tool! *2025-07-05* Trying out this app I saw Coach Murph used in one of his videos. This is an excellent tool for coaches and players for a great visual for swing analysis. I like to utilize video to break down a swing and this app takes it to the next level with the great features including exit velocity, launch angle, and bat path tracing. Love this. I only needed things I already had around the house. A phone and a tripod. Love b4! ### 5/5 — Swing Progress Tracker *2025-06-23, version 2.5.10* Been using it for 3 months and love cọmparing early swings to recent ones. Helps my kid stay motivated and focused. ### 5/5 — Good for All Ages *2025-06-22, version 2.5.10* Using this with both my 10U team and my 15-year-old daughter. The app adjusts well to different skill levels and still gives meaningful insights. ### 5/5 — Solid App With Real Potential *2025-06-22* Not perfect yet but already very useful. Looking forward to future updates. Would love to see more in-depth analytics. ### 5/5 — Very Accurate Readings *2025-06-21* Exit velo readings match what we see with HitTrax. Great for at-home training when we’re not at the facility. ### 5/5 — Great for Parents Who Want to Help *2025-06-18* I’m not a coach, just a dad trying to support my kid. This app made it easy to spot what he was doing wrong and helped us fix it together. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*