It depends on how you feel about tracking: Boost Cleaner declares data used to track you. The sensitive items are location. In total the label lists 5 data types; 29% of cloud storage apps we checked declare tracking.
Boost Cleaner privacy in one look
- 1Collects nothing
- 2Not linked
- 3Linked
- 4Tracks you
Built only from the developer's App Store label. It describes disclosure, not tested behaviour.
Boost Cleaner's developer reports using purchases, location, identifiers, usage data, diagnostics to track you across other companies' apps and websites.
Did Boost Cleaner ask for something?
Pick the permission prompt you saw. We compare it with what Boost Cleaner's developer declared.
Boost Cleaner lists Location on its label, including for tracking. Choose While Using and turn off Precise Location if the feature works without it.
User Content is not on Boost Cleaner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Contacts is not on Boost Cleaner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
Boost Cleaner declares data used to track you, so expect the “Allow to track?” prompt. Tap Ask App Not to Track; the app must keep working without it.
Health & Fitness is not on Boost Cleaner's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.
A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.
What Boost Cleaner collects, explained
| Data type | What it covers | Where to limit it |
|---|---|---|
| LocationSensitiveUsed to track youLinked to you | Where your phone is, either precisely (street level) or approximately (city or area). | Settings › Privacy & Security › Location Services: choose Never or While Using, and turn off Precise Location if the app does not need it. |
| PurchasesUsed to track youNot linked to you | What you have bought or tend to buy. | Review in-app marketing settings; subscriptions are listed in Settings › [your name] › Subscriptions. |
| IdentifiersUsed to track youLinked to youNot linked to you | An account ID, screen name, customer number or a device-level ID such as the advertising identifier. | Settings › Privacy & Security › Tracking: turn off Allow Apps to Request to Track, or tap Ask App Not to Track when prompted. |
| Usage DataUsed to track youLinked to youNot linked to you | What you tap, open and view inside the app, plus which ads you have seen. | There is no single iOS switch. Look for an analytics or personalised-ads toggle in the app's own settings. |
| DiagnosticsUsed to track youLinked to youNot linked to you | Crash logs, launch times, hang rates and energy use. | Settings › Privacy & Security › Analytics & Improvements › Share With App Developers controls what Apple passes on; the app's own crash reporting is separate. |
What Boost Cleaner's label means for you
Boost Cleaner's label has 5 types under “Data Used to Track You”, 4 types under “Data Linked to You”, 4 types under “Data Not Linked to You”. A data type can appear in more than one section when it is used for different purposes — for example, identifiers used for both analytics and advertising.
Tracking is the declaration that most separates apps. It means purchases, location, identifiers, usage data, diagnostics from Boost Cleaner can be combined with data from other companies to target or measure ads, or shared with data brokers. On iOS 14.5 and later, the app must ask your permission before tracking you through the advertising identifier; answering “Ask App Not to Track” blocks that identifier and tells the developer you have declined.
The items that deserve the most attention are location. Location history reveals home, work and routines. Precise location deserves the most scrutiny.
Cloud storage apps exist to move your files off the phone, so collecting user content is expected. What differs is encryption, sharing defaults and what the provider can read. Review automatic camera upload, shared-link expiry and whether client-side encryption is available.
Among the 170 cloud storage apps in our snapshot with a label, 29% declare tracking, 64% collect data linked to you and 24% say they collect nothing. Boost Cleaner lists 5 data types, more than the average of 3.3 for this group.
Utilities range from calculators to VPNs, so their labels vary more than any other category. A simple tool that collects identifiers and usage data for tracking is a sign of advertising SDKs.
Settings to check for Boost Cleaner
- 1
Tracking
Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.
- 2
Location
Settings › Privacy & Security › Location Services › Boost Cleaner. Choose While Using or Never, and switch off Precise Location if a city-level answer is enough.
- 3
Lock the app
On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.
- 4
Notifications
Settings › Notifications › Boost Cleaner › Show Previews: When Unlocked keeps message and account details off the Lock Screen.
Does Boost Cleaner track you?
Purchases, location, identifiers, usage data and diagnostics. Apple defines tracking as linking data from this app with data from other companies' apps, websites or offline sources for targeted advertising or ad measurement, or sharing it with a data broker.
Does Boost Cleaner track you? Full answer and how to stop it →
Lock Boost Cleaner behind Face ID
- Find Boost Cleaner on your Home Screen or in App Library.
- Touch and hold the icon until the quick-actions menu opens.
- Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
- Tap Require Face ID again to confirm. Boost Cleaner now asks for authentication every time it opens.
The lock is an iPhone feature, so it works whether or not Boost Cleaner has a passcode of its own. It does not change what the app sends to its developer.
About Boost Cleaner
| Developer | CELESTIAN GOLDEN APPS SL. |
| App Store category | Utilities (also Business) |
| Latest version | 4.7.3, released August 2026 |
| First released | August 2019 |
| Requires | iOS 15.0 or later |
| Size | 150 MB |
| Age rating | 4+ |
| Languages | 2 (EN, ZH) |
| Bundle ID | Suntechltd.Phuongnga.Boost |
The current version shipped in August 2026. That is recent enough that the label should reflect current practices, but check the App Store page again before relying on it.
What the label cannot tell you
- A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Boost Cleaner sends.
- It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
- Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
- Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
- Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.
The question to ask Boost Cleaner's developer: Can the provider scan or read the files I upload?
Boost Cleaner vs similar cloud storage apps
- HeyValue Cloud
- Boost Cleaner (this app)
- iMemories
- LocalCloud
- FileBrowser Professional
- Sia Storage
- Piwigo
Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.
Look up any of our apps in seconds, or put two labels side by side.
Apps similar to Boost Cleaner
All cloud storage apps → Who tracks you? A–Z → Apps that collect location → Privacy label decoder →
Your Boost Cleaner privacy checklist
Done. You have applied every control the label points to.
True or false?
- Right.Not quite.
True: it lists purchases, location, identifiers, usage data and diagnostics under Data Used to Track You.
- Right.Not quite.
Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.
- Right.Not quite.
True: Location appears on its label.
- Right.Not quite.
It is collected and sent; the developer says it is de-identified rather than tied to your account or device.
- Right.Not quite.
Apple's rules require apps to work the same whether or not you allow tracking.
Boost Cleaner privacy FAQ
Is Boost Cleaner safe to use?
Does Boost Cleaner track you?
What data does Boost Cleaner collect?
Who makes Boost Cleaner?
Can I lock Boost Cleaner with Face ID?
How does Boost Cleaner compare with other cloud storage apps?
Can the provider scan or read the files I upload?
How do I delete my data from Boost Cleaner?
For photos and documents you choose to keep apart from your main library, see VaultForYou.