# JAWKU vs Sprint Timer

The clearest difference is in-app purchases: JAWKU at none against Sprint Timer's 2. JAWKU also leads on ads (none vs shown) and ratings volume (244 vs 4). Sprint Timer's advantage is rating (4.3 vs 4.0) and update cadence (monthly vs every 2 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. Sprint Timer sells 2 one-off in-app purchases. JAWKU asks for nothing beyond the download.

Sprint Timer holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: JAWKU has 244 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 68% of JAWKU's written reviews are positive against 75% of Sprint Timer's.

JAWKU ships an update every 2 months, Sprint Timer monthly. The most recent releases landed on August 2, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | JAWKU | Sprint Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (244 ratings)](https://appshunter.io/ios/app/jawku/id1184083672/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/sprint-timer-on-your-mark/id1624679242/reviews)** |
| Number of ratings | **244** | 4 |
| Positive reviews | 67.7% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 34 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Brian Frohlich](https://appshunter.io/developer/1529541549) | [NAOYA ONO](https://appshunter.io/developer/1530328146) |

## What reviewers say

### JAWKU

[App page](https://appshunter.io/ios/app/jawku/id1184083672)

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.

**Highlights:** Measure sprint speed, Measure agility drills, Measure vertical jump height, Measure reaction time, Track performance history, Visualize personal records, Access training content

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 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)

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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

**Requested features**

- 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


### Sprint Timer

[App page](https://appshunter.io/ios/app/sprint-timer-on-your-mark/id1624679242)

This app functions as a starter and stopwatch for track events. It allows users to customize starting commands and measure race times, with options for randomized timing and saving recorded data. It's ideal for practice sessions or when official starters are unavailable.

**Highlights:** Customizable start commands, Randomized SET to pistol timing, Save and view measured times, Adjustable distance settings, Color customization for timer and background

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support Developer | $0.99 | one-time |
| Remove ads | $9.99 | one-time |


## Frequently asked questions

### Is JAWKU free?

JAWKU is free to download, with no in-app purchases.

### Is Sprint Timer free?

Sprint Timer is free to download, with in-app purchases available.

### Which has better reviews, JAWKU or Sprint Timer?

Sprint Timer is rated higher. JAWKU averages 4.0 out of 5 from 244 ratings, while Sprint Timer averages 4.3 from 4 ratings.

### Do JAWKU or Sprint Timer have ads?

Sprint Timer shows ads; JAWKU does not.

### Which is updated more often, JAWKU or Sprint Timer?

JAWKU ships an update every 2 months, and Sprint Timer monthly. Most recently, JAWKU was updated on August 2, 2026 and Sprint Timer on September 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*