Hedroom for 8 GB Macs
On a Mac with 8 GB, memory is tight more often. That is not a fault, but it does mean the difference between "full" and "struggling" matters more. Hedroom tells you which one it is, and names the app when one app is the reason.
First, read the right signal
An 8 GB Mac will almost always show most of its memory as used. macOS fills spare memory with cached files and gives it back instantly, so a full bar means little. Hedroom looks at memory pressure and how fast swap is growing instead. It reports Strained when macOS reports pressure Warn, or when swap grows by 20 MB a minute or more for 2 minutes while compressed memory is at least 20% of RAM. A Mac that has used some swap but is calm stays Healthy. What swap is and when it hurts.
The thresholds are the same on every Mac. They are written in terms of pressure and rates, not gigabytes, so they apply as they are to 8 GB.
Finding the app that grew
On a small Mac, one app that has grown to several times its usual size matters a lot. Hedroom flags a leak when an app is at least 3 times its usual size on your Mac and at least 1 GB, for about 20 minutes. On 8 GB, that 1 GB floor is the rule that applies, because 6% of 8 GB is less than 1 GB. Until it has learned an app, it flags an unknown app only when it is at least 15% of your RAM (about 1.2 GB on an 8 GB Mac) and still growing. Diagnosis lists the limits, and How it works the rules.
The fix is one click and asks first: Relaunch, which asks the app to quit and opens it again. The receipt measures whether memory pressure improved, and says so if it did not.
Browser tabs
A browser with many tabs is a common reason a small Mac runs short. The browser companion sleeps tabs you have not used for 15 minutes, 30 minutes or an hour, using the browser's own tab discard, and writes a receipt from the browser's memory before and after. It never sleeps a tab that is playing audio, pinned, or the one you are looking at, and it never sends tab titles or addresses anywhere. It works with Chrome, Edge, Brave, Arc and Firefox, not Safari.
What starts with your Mac
Everything that starts at login keeps some memory. Startup items shows each one's cost, and suggests turning off only an item whose program is gone or one you rarely use. What starts with your Mac and what it costs.
Hedroom's own cost
Hedroom's budget is under 80 MB of memory and under 0.5% of one CPU core. On a MacBook Pro with 18 GB, a release build measured a median of 29.2 MB with no window open, and 71 MB with the Today screen open. We have not yet measured it on an 8 GB Mac. See What makes it cheap for the dates and conditions.
Local AI on 8 GB
The Local AI headroom check works on any Mac. On 8 GB, larger models may answer "Make room" or "Won't fit", and Hedroom does not offer a higher GPU memory limit on a Mac this size. More on local AI.
Honest limits
- No benchmark results yet. An 8 GB MacBook Air is the first machine in our benchmark plan, and nothing from it is published. This page makes no claim about how much faster, or how many fewer slowdowns, any Mac will see.
- Beta testers wanted. The beta plan asks for at least 30% of testers to use 8 GB Macs. If you have one and want to try early builds, join the waitlist.
- Hedroom cannot add memory. If you run more than 8 GB of work at once, your Mac will swap, and the best Hedroom can do is name the app and ask before it acts.
- Relaunching an app gives memory back only if that app had grown. It will not help when everything you have open is simply large.
- Hedroom itself takes memory and some CPU. On a small Mac that counts, which is why it has a budget and why Settings shows what it actually uses.
Try it, then decide
Monitoring and explanations are free, with no card and no account. Pro will have a 7-day free trial that needs a card, and you can cancel before it ends. Pro is a subscription, from $31.95 a year, or $7.95 a month, planned prices.