System · macOS

ThermalAtlas

Local temperature monitor for Apple Silicon.

What it does

ThermalAtlas is a lightweight read-only menu bar monitor for Apple Silicon Macs. It shows actual CPU, GPU, internal SSD and physical external SSD values when macOS exposes them, and clearly says “Not available” instead of estimating. It is designed for monitoring rather than controlling fans, power settings or other hardware behaviour.

AI-assisted development

Schrotty74 develops these projects with AI assistance. Depending on the project, OpenAI Codex and, in parts, Claude support the development work. Xcode is used for Apple-platform development. Schrotty74 retains final review and responsibility.

Complete feature list

01CPU, GPU, internal SSD and physical external SSD sensor monitoring

02SMART status and SSD health where macOS supplies the values

03Local history, optional temperature alerts and export on request

04Standard and Compact view, selectable sensor groups and menu-bar modes

05Four native themes and optional German display language

06Two-second refresh by default, adjustable from one to four seconds

07Shows Not available instead of estimating a missing sensor

08Read-only CPU/GPU load and memory context

09Physical external SSDs shown separately when available

10Independent drive refresh cycles so slow drive queries do not delay CPU/GPU values

11Snapshot or CSV export only after a user choice

12No fan, power or system-setting control

Manual & downloads

Open English manual ↗

Latest final release · v1.0.0

Download macOS DMG ↗Download macOS ZIP ↗

Latest beta release · v0.5.0

Download macOS DMG ↗Download macOS ZIP ↗

Beta versions may still contain errors or incomplete features. Use them at your own risk.

Data and privacy

The app works offline without accounts, telemetry, analytics or network communication. It requires no administrator or root access and reads only sensor data exposed by macOS.

Descriptions, technical details, downloads and manuals reflect the public repository. External links open only when you select them. Displayed screenshots use the demo or fictional data documented there.