AppTimer for Windows

Quick summary

AppTimer is a free Windows utility that measures how long applications take to become ready for user interaction. It repeatedly launches executables, records the time until the program accepts input, and saves those results for later review.

How measurements are taken

AppTimer runs the target application multiple times to produce repeatable results. It detects when the application is responsive to the user, logs the elapsed time for each run, and can automatically terminate the tested program after measurement so batches can be completed without manual intervention.

Benefits and notable features

• Better precision than using a handheld stopwatch, especially for very short startup intervals.
• Consistent, repeatable measurements across multiple trials.
• Automatic closing of tested applications to streamline batch testing.
• Detailed logging of each run to help analyze trends and outliers.

Typical use cases

• Evaluating startup performance for an application across different machines.
• Comparing how various applications perform on identical hardware.
• Measuring very fast launches (under two seconds) where manual timing is unreliable.
• Integrating into developer or QA workflows for systematic performance testing.

Suggested alternative

If you want another free tool to consider, Driver Booster (Free) is sometimes recommended as an alternative option. It serves different purposes but is listed here as a free, readily available choice to explore.