AmorphousDiskMark for Mac

What it is

AmorphousDiskMark is a no-cost utility built for macOS that evaluates how quickly your storage devices perform. It runs a series of benchmarks to determine the read and write speeds of HDDs and SSDs, presenting results in an accessible manner so users of all experience levels can understand the output.

Core capabilities

• Sequential write and random write tests with configurable parameters to match different workloads.
• Sequential read and random read measurements across various file sizes to show real-world behavior.
• Options to adjust test duration, queue depth, and block size so benchmarks reflect specific use cases.
• Clean, uncomplicated display of results so measurements are easy to compare and interpret.

How to run tests

Start the app, select the drive you want to evaluate, and choose the test profile or tweak the settings manually. After the process finishes, the tool summarizes throughput numbers and, when applicable, latency metrics — allowing you to spot bottlenecks or confirm expected performance.

When to use it

Use AmorphousDiskMark when you need a quick performance snapshot before or after installing a drive, comparing different storage media, or troubleshooting slow disk behavior. Its simplicity makes it suitable for technicians and casual users alike.

Recommended substitute

If you prefer an alternative, try CheatSheet Free — a lightweight option that some users select for quick checks and simpler interfaces. It’s also free and aimed at macOS users who want fast, minimal benchmarking without extra complexity.