How to Blur Faces in a Photo Automatically on iPhone

TL;DR

Open a photo in PrivShot and every face is detected and blurred automatically, on-device, before the image is saved. Review what it caught, then tap Export to save a clean copy to your library. The original un-blurred photo is never written to disk.

Steps

Open PrivShot and tap Import to pick a photo — or take a new one.
PrivShot scans the image and blurs every face it finds automatically.
On the review screen, check each detected area. Faces (including small, distant ones in group shots) should already be covered.
(Optional) Switch between pixelate and blur, and dial in the strength.
(Optional) Brush over anything it missed by hand — the brush only adds blur, it never removes it.
Tap Export. PrivShot saves a redacted copy and strips the location (EXIF/GPS) metadata on the way out.

Why it works this way

PrivShot processes the full-resolution photo in memory and writes only the already-blurred pixels to disk. Nothing is uploaded — detection and redaction both run 100% on-device, with no account and no analytics — so the unredacted image has no chance to leak. It also blurs generously: detected regions are padded and feathered, so a turned head or partial profile still gets covered.

Tips & edge cases

It’s not just faces. PrivShot can also detect phone numbers, ID and passport numbers, addresses, bank card numbers, and company credit codes — and optionally blur a whole ID card or document, not just the text on it. Toggle each category on the review screen.
Blur is one-way. Once a region is covered you can’t un-blur it in the app; the manual brush is additive only. That’s deliberate for a privacy tool.
Free vs. Pro: the free tier blurs one photo at a time and exports with a small watermark. PrivShot Pro is a one-time purchase (no subscription) that removes the watermark and unlocks blurring a whole album in one batch.

FAQ

Do I have to tap each face to blur it? No. PrivShot detects and blurs every face automatically. You only step in if you want to brush over something it missed.

Is the original unblurred photo saved anywhere? No. Redaction happens in memory before anything is written to disk, so the raw un-blurred image is never saved or uploaded.

Does it work without internet? Yes. All detection and blurring run on-device, so it works fully offline and nothing leaves your phone.