Requirements
System requirements
Hedroom runs on Apple Silicon Macs with macOS 15 Sequoia or later. A few features need a MacBook Pro or an approval in System Settings, and this page lists which.
The basics
M1+
Apple Silicon, any M-series chip. Hedroom is arm64 only.
15
macOS 15 Sequoia or later.
1, 2, 5
Macs per plan, your choice. Hedroom itself has no account.
EN
English. Other languages are planned, not built.
Compatibility
| Mac or macOS | Supported | Tested so far |
|---|---|---|
| Apple Silicon, macOS 15 or later | Yes | One MacBook Pro (M3 Pro, 18 GB) on macOS 27.0. Runs on macOS 15 and 26, and on 8 GB and 16 GB Macs, are planned before launch. |
| Apple Silicon, macOS 14 or earlier | No | Not tested. |
| Intel Macs | No | Not built for. The measurements and fixes rely on how Apple Silicon handles memory and cores. |
| MacBook Pro | Yes, including fan curves | Fan control runs against a fake in tests. It is not yet verified on a signed build. |
| MacBook Air, Mac mini, iMac, Mac Studio | Yes, without fan curves | Not yet tested on these models. |
Requirements by feature
| Feature | Needs | Approval or permission | Good to know |
|---|---|---|---|
| Diagnosis, fixes, receipts, rules | Apple Silicon, macOS 15 Sequoia or later. | None. Runs as a normal app, with no admin password. | Fixes act only on apps you own and never on Apple's own processes. |
| Storage scan and cleanup | Nothing extra. | Full Disk Access, only for iPhone and iPad backups and Mail downloads. | Without it those rows say "Needs Full Disk Access" and everything else works. Hedroom never asks during setup. |
| Startup items | Items in your own LaunchAgents folder can be switched. | None for your own items. Items in /Library/LaunchAgents open Login Items in System Settings. | Items in /Library/LaunchDaemons are listed and cannot be switched yet. Items apps added in Login Items are not listed. |
| Display advisor | A connected display. Try it changes one display's mode. | No extra permission. | The old mode returns after 15 seconds unless you press Keep, and after a log out. If WindowServer cannot be read, it says "Unavailable". |
| Energy per app | A Mac that reports power channels. | None. | Not every Mac reports every channel. Hedroom shows what it can read and marks estimates. |
| Power profiles, battery health | A Mac with a battery for battery health. | None. Fan speed within a profile needs the helper. | Hedroom does not change Low Power Mode or Optimized Charging. |
| Fan curves | MacBook Pro only. | Helper, approved in System Settings › General › Login Items. | A MacBook Air has no fans. Other Macs keep fans on automatic. Fans return to automatic when Hedroom quits. |
| Local AI headroom: fit check | Nothing extra. Hedroom estimates; it does not run a model. | None. | The estimate can be off by about 15%. |
| Local AI headroom: GPU memory limit | Not offered on 16 GB or 24 GB Macs, where it would give no more than macOS already allows the GPU. | Helper, approved in System Settings. | Never leaves macOS less than 8 GB. Lasts until you restart. |
| Browser companion | Chrome, Edge, Brave, Arc or Firefox. Not Safari. | You click Set up browser companion in Tools. The extension comes from the browser's store. | Store listings go live with launch. It shows whole-browser memory, not per-tab memory. |
| Weekly report | Nothing extra. | Notifications are optional and can be turned off in Settings. | Made on your Mac from your own readings. |
What Hedroom itself costs
A tool that diagnoses a slow Mac must not slow it. Our budget is an average of under 0.5% of one core and under 80 MB of memory. The numbers below are measurements on one Mac: a MacBook Pro with an M3 Pro and 18 GB, macOS 27.0, using a Release build signed ad hoc. They are not a promise for your Mac.
| Situation | Measured | Budget | Date |
|---|---|---|---|
| Windows closed, 5 s sampling, 30 minutes | 0.27% of one core. Memory median 29.2 MB, highest 31.7 MB. | Under 0.3% and under 80 MB | 2026-10-13 |
| Windows closed, 2 s sampling (Mac under memory pressure) | 0.69% | No budget. Sampling speeds up when pressure rises. | 2026-10-13 |
| Today screen open, steady, about 6.5 minutes | 0.5%. Memory 71 MB. | Under 1.5% and under 80 MB | 2026-10-15 |
| First run, 10 minutes | Mean 2.6%, median 0.9%. Memory up to 74 MB. The first storage scan is real work and takes a few minutes. | Under 1.5% and under 80 MB | 2026-10-15 |
What is not measured yet
- Other screens with the window open (Memory, CPU, Rules and so on) ran 1.0% to 4.1% over 30 seconds on an intermediate build, and have not been re-measured on the final one. Some of those figures are above the 1.5% budget.
- Disk growth of Hedroom's own database (budget: under 150 MB a year) is not measured.
- The Mac was under memory pressure for much of the 2026-10-13 run, so part of it used the faster 2 s sampling. The 0.27% figure rests on 11.5 minutes of 5 s sampling inside a 30-minute run.
- No 8 GB or 16 GB Mac, and no M1 or M2, has been measured yet.
You can see Hedroom's own use in Settings. If it is higher on your Mac, tell us: contact.
Not supported
- Intel Macs. There is no Intel build.
- macOS 14 and earlier. The minimum is macOS 15 Sequoia.
- Safari. The browser companion cannot put Safari tabs to sleep, because Safari extensions cannot do it.
- The Mac App Store. There is no App Store edition yet. One is under evaluation. See the roadmap.
- Fan control on anything but a MacBook Pro.
- Languages other than English.