# APSI Bench — CPU performance tests

> CPU performance testing tool with single-core, multi-core, and long-term ray tracing. (iPhone/iPad app by Christian Moeller.)

- Source: https://appshunter.io/ios/app/apsi-bench/id1536601621 (this page in markdown: same URL + `.md`)
- Developer: [Christian Moeller](https://appshunter.io/developer/1364541961)
- Category: Utilities, Developer Tools
- Price: $0.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 18.0 · 3 MB
- Languages: American English
- Released: 2020-11-22
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/apsi-bench/id1536601621/reviews.md

## What is APSI Bench?

This app is aimed at interested users and testers who want to test the performance of the integrated CPUs. For this purpose, it offers a mixed test for single-core and multi-core CPUs, as they also occur in real life. In the single core test, the app calculates ten million random numbers from a total of six different data types (Int, Float, etc.). Such calculations are crucial for game apps. APSI Bench then calculates one million FFT transformations that are common in audio applications, for example. In addition to this, the app also runs a ray tracing algorithm that uses several CPU cores at the same time. You can set how many cores should be used here. The results of these tests are based on a reference system (currently a Macbook Pro 16 inch with an eight-core Intel i9 CPU). That reaches about 100 points. Every user of the app can test the ratio of their Apple product to the MacBook Pro.
A decisive extension is the newly built in long-term measurement. Here the app carries out the ray tracing tests with all available CPUs over a long period of time that can be set by the user (up to 30 minutes). The result is then displayed in graphic form. If problems arise with overheating of the CPU cores, this will be visible in the graphic.
Finally, the app is also a technology demonstration. The entire interface was designed in SwiftUI 2, with gorgeous animations being used. The app will also be offered as a universal app for macOS.

## Key features

- Single-core CPU performance tests
- Multi-core CPU performance tests
- Ray tracing algorithm tests
- Long-term CPU stress testing
- Overheating detection
- Comparison to reference system


## Frequently asked questions about APSI Bench

### What is APSI Bench used for?

APSI Bench is used to test the performance of your device's CPU. It offers single-core, multi-core, and ray tracing tests to evaluate processing power and identify potential overheating issues.

### How does APSI Bench compare to other devices?

The app provides results based on a reference system (Macbook Pro 16 inch with an eight-core Intel i9 CPU) that scores around 100 points. This allows users to see the ratio of their Apple product's performance to this reference.

### Can APSI Bench detect overheating?

Yes, the long-term measurement feature runs ray tracing tests over a user-set period (up to 30 minutes). The graphical display of results can reveal problems with CPU core overheating.

### What kind of tests does APSI Bench perform?

It includes a mixed test for single-core and multi-core CPUs, calculating random numbers and performing FFT transformations. It also runs a ray tracing algorithm, with the option to set the number of CPU cores used.

### Is APSI Bench available on macOS?

Yes, the app is designed as a universal app and will also be offered for macOS, indicating compatibility with desktop Apple systems.

### What is the price of APSI Bench?

APSI Bench is a paid application, priced at $0.99. This one-time purchase grants access to all its performance testing features.

### How often is APSI Bench updated?

The latest version is 1.3.0, last updated on January 3, 2026. While this indicates a recent update, the frequency of future updates is not specified.

### What is the age rating for APSI Bench?

APSI Bench has an age rating of 4+, making it suitable for a wide range of users. This rating suggests no mature content is present in the application.

## Version history (last 4 releases)

### 1.3.0 — 2026-01-03

Full CPU Core Utilization!
All benchmarks now run in parallel across all available CPU cores, giving you true multi-core performance measurements:
- Random Number Generation: Fully parallelized
- FFT Transformations: Parallelized with efficient buffer pooling
- Complete UI redesign with responsive layouts
- Interactive performance charts with hover/tap functionality
- Improved Dark Mode and Light Mode support
- Enhanced grid display for better chart readability
- Larger, scrollable log windows
- Unified button styling across platforms
- Keep in mind: New performance points  are not comparable to old values prior version 1.3.0!

### 1.2.0 — 2022-08-11

New more complex algorithm at Long-term test. Higher CPU load should now lead to even more precise results on thermal throttling.

### 1.1.1 — 2020-11-30

- change to safer but slower FFT algorithm to avoid possible crashes
- added a help page
- a few optical improvements on the log

### 1.01 — 2020-11-23

No release notes.

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## More apps by Christian Moeller

- [OLED Clock](https://appshunter.io/ios/app/oled-clock/id1364541962)
- [Simple BLE Scanner](https://appshunter.io/ios/app/simple-ble-scanner/id1663446245)

All apps by Christian Moeller: https://appshunter.io/developer/1364541961

## Related topics

[cpu testing](https://appshunter.io/ios/topics/cpu-testing)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*