CPU Runner
Live monitor & hardware tests
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New CPU & Memory widgets. Live monitoring across CPU, GPU, network, and battery. Plus 11 hardware tests — touch, sensors, speaker, mic, camera, GPS. Public iOS APIs only
CPU Runner is a real-time diagnostics tool for iPhone and iPad. Built for developers debugging app performance, IT support diagnosing devices, and curious users who want to know what's actually happening on their
hardware.
No tracking. No fake numbers. Only public iOS APIs.
FIVE LIVE MODULES
CPU
- Per-core load via host_processor_info
- Overall load with thermal-state badge (Nominal / Fair / Serious / Critical)
- Single-core and multi-core benchmarks with progress tracking
- 24-hour history
Device
- Chip identifier, iOS version, kernel build
- Memory breakdown: active / inactive / free / wired / compressed
- Memory pressure indicator
- Storage, resolution, ProMotion refresh rate, color gamut, boot time
- Shareable summary card
GPU
- Metal device family and capabilities
- Raytracing, function pointers, dynamic libraries support
- Argument buffer tier, R/W texture tier, max threadgroup memory
- FMA throughput benchmark in GFLOPS
Network
- Live download and upload throughput (app-attributed, honestly labeled)
- Cellular radio: 5G, LTE
- NWPath flags: expensive, constrained, IPv4/IPv6
- Local IPv4 address
- Latency to a configurable host
- 24-hour history with CSV export
Battery
- Charge level, state, Low Power Mode
- 24-hour battery curve
- Deep link to Settings for battery health
11 HARDWARE TESTS
For technicians and curious users:
- Display: solid colors, gradients, grids, SMPTE color bars
- Multi-Touch: up to 11 simultaneous touches with force readout
- Touch Coverage: paint the screen to find dead zones
- Haptics: all 8 feedback types
- Speaker Tone: sine waves with L/R channel routing
- Microphone: live input meter
- Motion Sensors: accelerometer, gyroscope, magnetometer, attitude
- Barometer: altitude and atmospheric pressure
- Proximity Sensor
- Camera: front/back preview with torch
- GPS / Compass: coordinates, altitude, heading, accuracy
HOME SCREEN WIDGETS
- CPU Load (small and medium) with per-core bars
- Memory Pressure with category breakdown
- Device Info: chip, RAM, free storage, uptime
HONEST DESIGN
CPU Runner does NOT:
- Pretend to "clean RAM" or "boost CPU" - iOS does not expose those APIs, and apps that claim to are misleading users
- Read battery health or cycle count - these are gated behind private APIs
- Measure system-wide network throughput - only app-attributed traffic is available
- Track you. Nothing leaves your device.
All measurements come from documented public Mach, Metal, Network, and UIKit APIs.
OPTIMIZED FOR IPAD
Multi-column NavigationSplitView, sidebar navigation, gorgeous in landscape.
REQUIREMENTS
iOS 17 or later. Some metrics (per-core CPU, hardware sensors) require a real device - simulators return synthetic values.
- Fix bugs on the GPU tab.
The developer, 传胜 贾, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 传胜 贾
- Size
- 3.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Remove Ads. $0.99
- Copyright
- © 2026 ChasonLab