诊断
免费
Hedroom 读取内存压力、交换空间、CPU、散热、电池和存储空间，然后指出那个真正要紧的 App。
The problem
Your Mac feels slow, and Activity Monitor gives you numbers, not an answer. The memory bar is nearly full, which looks alarming, but a Mac that has been on for a while always shows most of its memory as used: macOS fills spare memory with cached files and hands it back the moment an app asks. Used memory on its own tells you very little.
What matters is whether macOS is struggling to find room, and whether one app has grown far past its normal size. Spotting that by eye means watching several graphs for an hour. Diagnosis does the watching, names the one app that matters, or says plainly that nothing needs you.
How it works
- Read. One sampler reads memory pressure, swap growth, CPU, thermals, battery and free storage. It checks every 2 seconds while a Hedroom window or the menu bar panel is open, and less often in the background.
- Judge memory by pressure. The state is Healthy, Strained or Critical, from macOS's own pressure level and how fast swap is growing. Swap that merely exists never makes your Mac Strained. Swap that keeps growing can.
- Learn what is normal. For each app, Hedroom learns a usual size from your last 7 days. Until it has watched an app for about 6 hours, it says it is still learning and uses typical sizes for apps it knows by name.
- Wait to be sure. An app is flagged as leaking only when it is at least 3 times its usual size, at least 1 GB (or 6% of your RAM, if that is larger), and has stayed that way for 20 minutes or keeps growing. A background app that averages 80% of one core for 3 minutes is flagged as runaway CPU.
- Say it once. The finding appears on Today with its reason. Notifications are rationed: the same finding about the same app at most once every 6 hours, and no more than 3 non-urgent ones a day.
What you will see
Today shows one thing: a single suggested fix with its reason, such as an app's name, its size and how many times its usual size that is, or "All good. Nothing needs you right now." The Memory screen adds the pressure gauge, a 60-minute timeline of Healthy, Strained and Critical, the swap rate, what is filling your memory (apps, wired and GPU, compressed, cached files), and every app sorted by size.
The menu bar icon shows the same state, with a small dot when a fix is ready. Apple's own processes get a plain-words explanation and no buttons.
A worked example
Example, not real data
Slack grows over an afternoon
Say Slack usually sits around 1.1 GB on your Mac. After a long call it reads 4.1 GB, which is 3.7 times its usual size, and it has stayed there for 20 minutes. Memory pressure has moved to Strained and swap keeps growing.
Today shows "Slack · 4.1 GB · 3.7× its usual size" and offers to relaunch it, with the reason. Nothing happens until you press the button; Fixes covers what the button does. If pressure had stayed Healthy, the same growth would still show on Today, but you would be notified only from 4 times its usual size.
Details and limits
它做什么
- 根据内存压力和交换空间增长的速度来判断内存，而不是根据“已用内存”。
- 了解每个 App 在你的 Mac 上通常有多大，然后标出那个已增长到好几倍并一直没降下来的 App。
- 用平实的话解释 macOS 自己的进程，例如 kernel_task 和 WindowServer。
- 在菜单栏显示摘要，并就泄漏、失控的 CPU 和严重的内存压力向你提醒。
What it will not do
- 显示“问题”数量、吓人的扫描结果，或未经测量的百分比。
- 仅仅因为查看，就对你的 Mac 做任何事。
Limits
- 只有当某个 App 异常大并持续一段时间（默认约 20 分钟）后，才会标记为泄漏，所以短暂的峰值不算发现。
- 内存健康时，它会如实说明，然后保持安静。这是正常状态，而不是缺失。
免费还是 Pro
永久免费。
Reading your Mac changes nothing, so it stays free. Monitoring, explanations, alerts and the storage scan are free after the trial too.
Questions people ask
Does it need my admin password or Full Disk Access?
No. Setup asks for neither, and the readings behind Diagnosis need no admin rights. Full Disk Access is asked for only if you later turn on iPhone backups or Mail downloads in Storage.
Will watching my Mac slow it down?
Hedroom's budget is under 0.5% of one core on average and under 80 MB of memory. With no window open and 5-second ticks it measured 0.27% of one core on one MacBook Pro. That is one Mac, not a promise for yours. How it works has the measured figures and their limits.
Does anything leave my Mac?
No readings, app names or usage leave it. The only things that go online are the license check, update checks, a weekly download of the signed process library, and feedback you choose to send. Privacy lists each one.
What if it names the wrong app?
A finding is a suggestion. Nothing is done until you press a button, and you can put any app on your never-touch list, after which fixes and rules skip it. Alerts still show.