Jazz Disk Bench Pro

Name: Jazz Disk Bench Pro
Price: 2.99 USD
Rating: 4.4 (28 reviews)
Author: Baofeng County Jixu Education Information Consulting Co., Ltd.

Storage Speed Test

$2.99

28 Ratings
Age Rating

4+
Years
Category

Utilities
Developer

Baofeng County Jixu Education Information Consulting Co., Ltd.
Language

EN
+ 2 More
Size

69.1
MB

Accurate disk storage speed test and benchmark. Sequential, 4K random, and stress test. Jazz Disk Bench is a pro-grade storage performance measurement tool designed for SSDs, SD cards, and internal/external storage. Get accurate data on your device's throughput with industry-standard testing methods. Key Features: * Sequential Speed Test: Measure peak performance for copying large files (movies, games, etc.). * 4K Random IOPS: Evaluate system responsiveness. Low random performance is often the root cause of device lag. * Pro Stress Test: Push your storage to the limit with 2GB–100GB tests to check stability and "real" NAND speed after cache exhaustion. * External Storage Support: Fully compatible with USB drives and SD cards via custom folder selection. Benchmark Details: * Sequential Test: Reads/writes 16MB blocks sequentially. Perfect for testing raw transfer speeds. * Random Test (4K): Reads/writes 4KB blocks at random locations. This reflects how fast your OS launches apps and handles small files. * Stress Test: Sequentially writes massive data (up to 100GB). Ideal for pro users to test SLC cache size and sustained NAND write performance. Note: For external storage tests, ensure a stable connection and write permissions.

Ratings & Reviews

4.4

out of 5

28 Ratings

Cheap basic program, would like more configurability
08/18/2021
JFoDizzle
The app tests sequential and random read/write as expected. With modern SSDs and their complex caching schemes, it would be nice to have more configurability in this app: >10GB sequential R/W, configurable queue depth for random R/W, some sort of reporting on the Brand/Vendor/type of SSD that is in the device.
Cheap basic program, would like more configurability
08/18/2021
JFoDizzle

The app tests sequential and random read/write as expected. With modern SSDs and their complex caching schemes, it would be nice to have more configurability in this app: >10GB sequential R/W, configurable queue depth for random R/W, some sort of reporting on the Brand/Vendor/type of SSD that is in the device.
Useless. Not even worth a dollar
12/12/2024
yangosteen
The lite version of this app does a quick benchmark speed test of the internal SSD.So I purchased the pro version for a dollar because it supposedly does a speed test of my external SSD.But it does not do this. The app itself is horribly designed and just doesn't make sense. On the settings tab I can select an external. However, there is no way I can actually test this drive.This app is useless. You get what you pay for. Except in this case it's not even worth a dollar.Just stick with the light version if you want to test the internal SSD speed.

Developer Response
Thanks for the feedback. After selecting external drive, you can go back to the benchmark tab to test the selected drive. We’ll consider a better design to make this more intuitive.
Useless. Not even worth a dollar
12/12/2024
yangosteen

The lite version of this app does a quick benchmark speed test of the internal SSD.So I purchased the pro version for a dollar because it supposedly does a speed test of my external SSD.But it does not do this. The app itself is horribly designed and just doesn't make sense. On the settings tab I can select an external. However, there is no way I can actually test this drive.This app is useless. You get what you pay for. Except in this case it's not even worth a dollar.Just stick with the light version if you want to test the internal SSD speed.
Developer Response 12/14/2024
Thanks for the feedback. After selecting external drive, you can go back to the benchmark tab to test the selected drive. We’ll consider a better design to make this more intuitive.
Only tests internal speeds
08/02/2022
Earlwhytt
It only tests internal speeds. If I knew this I would not have paid a dollar for it. I know what my internal drive speed is. There are thousands of benchmarks on the internet. Refund please.

Developer Response
If you want a refund, you can search "Request Refund for App Store Purchase" and then follow the steps. Edit: Thanks for the advice. External storage benchmark is now supported with 5.4.0 version.
Only tests internal speeds
08/02/2022
Earlwhytt

It only tests internal speeds. If I knew this I would not have paid a dollar for it. I know what my internal drive speed is. There are thousands of benchmarks on the internet. Refund please.
Developer Response 10/02/2022
If you want a refund, you can search "Request Refund for App Store Purchase" and then follow the steps. Edit: Thanks for the advice. External storage benchmark is now supported with 5.4.0 version.

Bug fixes and performance improvements

Version 7.1.1 Jun 16

Data Not Collected

The developer does not collect any data from this app.

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Accessibility

Information

Seller: Baofeng County Jixu Education Information Consulting Co., Ltd.
Size: 69.1 MB
Category: Utilities
Compatibility: Requires iOS 15.2 or later.

iPhone
Requires iOS 15.2 or later.

iPad
Requires iPadOS 15.2 or later.

iPod touch
Requires iOS 15.2 or later.

Mac
Requires macOS 12.0 or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English and 2 more

English, Simplified Chinese, Traditional Chinese
Age Rating: 4+

4+

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