JAWKU vs Perfect Stopwatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAWKU
This app measures athletic performance metrics like speed, agility, and reaction time with a wearable sensor. It allows athletes to track progress, visualize improvements, and access training content to enhance their performance.
- Measure sprint speed
- Measure agility drills
- Measure vertical jump height
- Measure reaction time
- Track performance history
- Visualize personal records
- Access training content
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Get Quick. Get Fast. Get JAWKU Speed. This app requires a JAWKU Speed sensor. Numbers don’t lie. And JAWKU Speed provides the key performance data across speed, agility and reaction time, with unrivaled accuracy in wearable technology. We changed the game. We're still changing it. JAWKU Speed was intentionally designed with you, the athlete, as our primary focus. Providing a meaningful experience, supported with accurate data capture hasn't existed like this, until now. The best part - while JAWKU is in a class of it's own, it's as simple to use as a stopwatch. YOUR PERFORMANCE UNLEASHED The JAWKU Speed App brings the entire experience to life. And setting it up is simple! Out of the box, the app will walk you through pairing and in a matter of minutes, you'll be unleashing an experience unlike any other. It's all there to help you understand how you're tracking and making good on all of that training you've been committed to. Let's take a closer look at the main features. TEST + Measure sprint speed + Measure agility (standardized tests or build your own drill) + Measure vertical jump height (NEW) + Measure reaction time off the blocks (in audible mode) + Select your distance and start mode (movement or audible) and you're ready to go TRAIN + Train with purpose. From within the app, you'll have access to the latest in training content from our partner, STACK, where athletes get better TRACK + Track your performance history over time + Visualize your performance against your previous times and personal records + Learn how your reaction time off the blocks is affecting your overall time. Seeing is believing. MY JAWKU + Manage everything here + Check sensor connectivity + Adjust/update your personal profile and settings
Perfect Stopwatch
Accurately time sprints using video analysis. This app provides precise sprint measurements, eliminating the inaccuracies of manual stopwatches and expensive laser systems. Ideal for athletes and coaches seeking verifiable performance data.
- Laser-like sprint accuracy
- Video analysis for timing
- Precise start and finish line detection
- Record unlimited sprint videos
- Tutorial for easy use
- Alternative to manual stopwatches
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Experience the future of sprint timing with Perfect Stopwatch, a free app that delivers laser-like accuracy without breaking the bank. Ideal for various sprinting events, this revolutionary app is the perfect alternative to imprecise stopwatches and expensive laser timing systems. Ever wondered about the accuracy of your sprint time recorded using a handheld stopwatch? Those times can be off by as much as 0.30 seconds. Unfortunately, there has been little consistency in timing sprints, leading to skepticism regarding self-reported times. Perfect Stopwatch offers both accuracy and verifiable proof! Athletes, coaches, scouts, and fans have long sought a convenient and precise method for timing sprints. Perfect Stopwatch is the solution, utilizing video analysis to determine sprint times. Simply drag the video marker to pinpoint the exact moment the athlete's hand leaves the ground at the start and then drag it again to identify when their chest crosses the finish line. The app's tutorial will guide you through the straightforward process. Say goodbye to the uncertainty of a coach's thumb determining your sprint time. With Perfect Stopwatch, you can video record and time your runs as often as you like. No more re-runs due to a coach's timing error, which may have robbed you of your fastest time. With a video of your sprint, Perfect Stopwatch empowers you to measure your performance with unparalleled precision. Don't settle for imprecise timing methods or spend a fortune on high-tech systems. Elevate your sprint performance tracking with Perfect Stopwatch and gain a competitive edge. Join countless athletes, coaches, scouts, and fans who have already made the switch. Download Perfect Stopwatch now and revolutionize the way you measure your sprint times! To access all features, content, and functionality you can subscribe to an annual auto-renewable subscription. This is a recurring transaction that will be charged to your iTunes Account at confirmation of purchase and will automatically renew unless you cancel it at least 24 hours before the end of your subscription. Renewals will be charged the same cost within 24 hours prior to the end of the current period. You can manage your subscriptions and auto-renewal can be turned off by going to your iTunes Account Settings after purchase. Privacy Policy: https://appcano.io/privacy Terms of Use: https://appcano.io/terms
Screenshots
Verdict
The clearest difference is rating: Perfect Stopwatch at 4.6 against JAWKU's 4.0. Perfect Stopwatch also leads on update cadence (every 2 weeks vs every 2 months) and review sentiment (86% vs 68%). JAWKU's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, ratings volume, 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. Perfect Stopwatch sells 5 in-app purchases, starting at $19.99 per 3 months. JAWKU asks for nothing beyond the download.
Perfect Stopwatch holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 244 and 192 respectively. Written reviews point the same way: 68% of JAWKU's written reviews are positive against 86% of Perfect Stopwatch's.
JAWKU ships an update every 2 months, Perfect Stopwatch every 2 weeks. The most recent releases landed on August 2, 2026 and September 23, 2026 respectively.
| Parameter | JAWKU | Perfect Stopwatch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (244 ratings) | 4.6 (192 ratings) — better |
| Positive reviews | 67.7% of reviews | 86.5% of reviews — better |
| Number of ratings | 244 — better | 192 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Frohlich | Appcano LLC |
Customer experience
JAWKU
Perfect Stopwatch
User reviews
JAWKU
From 244 App Store ratingsWhat we love
- 🚀 Portable and easy to set up
- 📊 Accurate timing comparable to expensive laser gates
- 💰 Cost-effective alternative to multi-thousand dollar systems
- 📱 Requires only phone and sensor
- 🎯 Versatile for multiple drill types (40yd dash, 5-10-5, vertical jump)
Room to improve
- 🐛 Unreliable recording of times
- 📡 Bluetooth connectivity issues at longer ranges
- ❌ Fails on distances beyond 40 yards
- 🚫 Interference from people walking in front of camera
- ⚙️ Clunky and unintuitive interface
Perfect Stopwatch
From 192 App Store ratingsWhat we love
- 👍 Great for timing sprints
- 👍 Accurate for 40-yard dash
- 👍 Good for self-timing
- 👍 Provides proof of times
- 👍 Affordable compared to others
Room to improve
- 🐛 Videos not in frame
- 🐛 Inaccurate times reported
- 🐛 Landscape videos crop to portrait
- 🐛 Over-simplified interface (recent update)
- 🐛 High memory usage
Bugs and requests
JAWKU
Reported bugs
10 issues- Sensor disconnects at longer ranges (100+ meters)
- Times not recorded despite successful setup
- Audible mode not working on iPhone 13
- Jump clip registration fails
- Device won't charge or pair
Show 5 moreShow fewer
- App loading screens freeze after Bluetooth connection
- Sensor not detected despite proximity
- Timer stops before athlete finishes event
- Inconsistent performance across different iOS versions
- App hasn't been updated in multiple years
Requested features
8 requests- Multi-athlete simultaneous timing capability
- Continuous video recording with manual time selection
- Better documentation and instructional videos
- Improved app updates and maintenance
- Better Bluetooth range extension
Show 3 moreShow fewer
- Camera rotation functionality
- Offline functionality without internet requirement
- Better handling of crowded track environments
Perfect Stopwatch
Reported bugs
4 issues- Videos uploaded not completely in frame
- Landscape videos crop to portrait
- App requires restart while editing
- Limited video uploads for paid users
Requested features
3 requests- Allow landscape video uploads without cropping
- Revert to older, more comfortable interface
- Clarify data storage handling
In-app purchases
JAWKU
No in-app purchases
Perfect Stopwatch
- Perfect Stopwatch 3 Months3 Days trial$19.993 Months
- Unlock All Features3 Days trial$19.991 Year
- Perfect Stopwatch Individual$29.99
- Perfect Stopwatch Group$129.99
- Perfect Stopwatch Team$399.99








