Lunar Defense Mobile Security
One tap.
A clear
answer.
Run a sweep and Lunar Defense checks the integrity and connection of your iPhone or iPad right on the device, then gives you one honest verdict with plain-language findings. Your scan results never leave it.
Free to sweep · Pro from $4.99/mo · No account required
Every sweep ends with one honest verdict, never a made-up score.
On-device. Private. Honest.
The same detection technology trusted in federal deployments, re-engineered for your personal iPhone or iPad. The analysis runs entirely on-device. Your scan results and personal information never leave it.
What a sweep does
Real checks. Plain-language answers.
One-tap sweep
Tap once and Lunar Defense runs a full battery of security checks on your device in seconds.
Device integrity
Checks whether the operating system has been tampered with, whether unauthorized code is running alongside the app, and verifies your device is genuine with Apple.
Connection safety
Detects proxies and network interception, and confirms the app's own connection can't be quietly impersonated or watched.
The correlation cross-check
A final pass weighs every signal together, catching patterns that line up into a bigger picture no single check would see.
A verdict, not a score
One plain status: Protected, Needs attention, or Action needed, earned by named evidence. No theater, no 0 to 100 gauge.
Private by architecture
The analysis happens on your device; your results and personal information never leave it. Honest about what iOS lets it see.
Free & Pro
Sweep free. Automate when you're ready.
Manual sweeps, always free
Run a full security sweep whenever you want, at no cost, forever.
Automatic background sweeps PRO
Lunar Defense sweeps on a schedule, so you don't have to remember to check.
Alerts when something changes PRO
Get notified the moment a background sweep finds something that needs your attention.
Pricing
Start free. Upgrade anytime.
Yearly includes a 3-day free trial.
Free
Manual sweeps, forever
Pro · Yearly
3-day free trial · ~$4.17/mo
Pro · Monthly
Flexible, cancel anytime
Subscriptions are auto-renewing and billed through your Apple ID. Cancel anytime in Settings.
Frequently asked
Is Lunar Defense Mobile Security free?+
Yes. Manual sweeps are completely free, forever, no account required. A Pro subscription adds automatic background sweeps and alerts when something changes.
Do my scan results ever leave my device?+
No. The analysis runs on your device and your results stay there. The app makes only a few network connections — verifying your device is genuine with Apple, checking that the connection to us isn't being intercepted, push notifications for background scans, and payments through Apple — and none of them carry your scan results or personal information. The one exception is one you control: if you tap "Get help," the app drafts an email containing your findings, and nothing is sent until you read it and send it yourself. See our Privacy Policy for full details.
What does a sweep check?+
Three families of checks plus a final cross-check: device integrity (operating-system tampering, unauthorized code running alongside the app, device genuineness), connection safety (interception and impersonation), and a correlation step that weighs everything together. Each finding is explained in plain language.
Will it remove a threat it finds?+
Lunar Defense is a security checkup and advisor, not an antivirus. It detects issues and gives you a clear, ranked list of what to do, safety-first steps first. It doesn't quarantine or delete files.
What do I get with Pro?+
Automatic background sweeps on a schedule, plus alerts when something changes, so you stay covered without manually running a sweep. $4.99/month or $49.99/year with a 3-day free trial.
How do I cancel my subscription?+
Subscriptions are managed through your Apple ID. You can cancel anytime in Settings on your iPhone or iPad, under your name → Subscriptions. You keep Pro until the end of your billing period.
Run your first sweep in seconds.
Download free. Sweep as often as you like. Upgrade when you want it automatic.
