Last updated: July 2026 · Covers SystemZen for macOS, Windows, iPhone, iPad, and Android
The short version. SystemZen scans your device on your device. The names of your files, your photos, and the apps you have installed are never sent to us or to anyone else. If you sign in, we store your email address and a short one-line summary of each maintenance run so your history follows you between devices. The free tier of the iPhone, iPad, and Android apps shows ads, which means Google receives the usual advertising signals described below; the Mac and Windows apps show no ads at all.
SystemZen is published by Soft Flourish (California, USA). This policy explains what the app collects, why, and what you can do about it.
Scanning is entirely local. The following never leave your device, and there is no endpoint on our servers that could receive them:
Signing in is optional — every scan and every tool works without an account. It exists so your maintenance history is available on your other devices. When you do sign in, we store:
| Data | Why |
|---|---|
| Email address | Identifies your account for both email/password and Google sign-in. |
| Account identifier | The internal user ID your history is filed under. |
| Name | Only if you sign in with Google, which supplies your display name. Signing up with an email address and password never asks for a name. |
| Maintenance history | For each completed run: what kind it was, roughly how much space it reclaimed, how many items it touched, when, and a device label such as “Google Pixel 8”. The stored summary looks like “Reclaimed 1.2 GB · 34 items” — never a list of what those items were. |
Accounts and history are held in Google Firebase (Authentication and Cloud Firestore) on our behalf. All of it is encrypted in transit.
The iPhone, iPad, and Android apps are supported by ads on the free tier, served by Google AdMob. SystemZen Pro removes them. The Mac and Windows apps contain no advertising code whatsoever.
When an ad is requested, Google collects and receives:
These go to Google as an advertising partner and are used for advertising, analytics, and fraud prevention. Google's handling is governed by its own privacy policy. On iPhone and iPad we ask for App Tracking Transparency permission; declining means you still see ads, but they are not personalized. On Android you can reset or delete your advertising ID under Settings → Privacy → Ads.
The mobile apps include Google Firebase Analytics, which automatically records app opens, screen views, session length, and basic device and performance information. We use it to see which features are actually used and where the app is slow. We do not upload custom events describing your files or scan contents.
Each is requested only when you use the feature that needs it, and declining leaves the rest of the app working:
SystemZen is not directed to children and is rated for general audiences aged 18 and over. We do not knowingly collect personal information from children. If you believe a child has given us data, write to us and we will delete it.
If this policy changes materially we will update the date at the top and, where the change affects what we collect, note it in the app's release notes.
Soft Flourish, California, USA — [email protected] or the contact form. See also Terms of Use and Support.