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AmorphousDiskMark

Free#16 of 29 in Disk Benchmark Software

AmorphousDiskMark: A free macOS disk benchmark with configurable tests and MB/s and IOPS results. Ranked #16 of 29 in Disk Benchmark Software by our editors (6.7/10); pricing: Free plan; best for focused macOS disk benchmarking.

6.7/10Editor score

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AmorphousDiskMark6.7 Visit site

At a glance

Editor score
6.7 / 10
Pricing
Free plan
Best for
Focused macOS disk benchmarking
Free plan
Yes
Paid from
Free
Random I/O tests
Yes
Facts checked
20 Sep 2026

Where it wins
- Free macOS utility for sequential and random storage benchmarks
- Supports queue depths up to 1024 and configurable test parameters
- Reports results in MB/s and IOPS with copyable plain text output
Where it doesn't
- Limited to macOS
- Latency reporting is not part of the documented output
- No documented command-line interface

Our verdict on AmorphousDiskMark

AmorphousDiskMark is a free macOS utility for measuring sequential and random read/write performance on internal or external storage volumes. It is aimed at Mac users who want focused disk benchmarking rather than a broader storage-management suite. The application covers sequential 1 MiB tests and random 4 KiB tests, with results presented in MB/s and IOPS. Its source code is publicly available under the MIT license.

The Free plan provides the full product described: a macOS storage performance testing utility with no paid tier presented. Testing parameters can be adjusted across several dimensions, including queue depth up to 1024, measurement size from 16 MiB to 64 GiB, iteration count, interval, and duration limit. Users can also choose random or zero test data. This makes the utility suitable for repeatable comparisons across different test conditions, while formatted plain-text result copying makes findings easier to retain or share.

AmorphousDiskMark’s main trade-off is its narrow platform and measurement focus. It is built for macOS and concentrates on sequential and random throughput and IOPS, rather than presenting a wider cross-platform workflow. Latency reporting is not part of the documented output, and a command-line interface is not documented. Choose it if you need a free Mac utility with adjustable storage tests and straightforward results. Choose another tool if you need Windows or Linux support, latency-focused analysis, or command-line operation.

Your product? Our editors can test AmorphousDiskMark in depth and publish a review, labelled as paid · from $149/mo →

AmorphousDiskMark pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

All 1 AmorphousDiskMark plans and prices →

AmorphousDiskMark fact sheet

Free plan	Yes
Paid from	Free
Random I/O tests	Yes
Sequential tests	Yes
IOPS measurement	Yes
Latency measurement	Not verified
Supported platforms	macOS
Command-line interface	Not verified
Deployment	Desktop
Platforms	macOS
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan (source)
Website	github.com
Facts checked	20 Sep 2026

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Featured on iTechGuides

AmorphousDiskMark is listed in our Disk Benchmark Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update