TextShield: SMS Spam Filter
On-device SMS junk sorting
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
A local rule engine sorts spam texts from unknown senders. 170 Chinese and 101 Japanese rules built in. Your messages never leave your device.
Tired of spam texts? TextShield quietly sorts them out — the decision
is made on your device, and your messages never leave your phone.
HOW IT WORKS
Texts from unknown senders pass through three checkpoints:
1. Your allow list (always wins, important texts are never lost)
2. Your block list (keywords, regex, sender prefixes)
3. Built-in rule packs for Chinese (170 rules) and Japanese (101 rules)
spam patterns (loan scams, fake invoices, gambling, delivery & bank phishing)
Anything unmatched is delivered normally — when in doubt, let it through.
EVERYTHING IS FREE
Unlimited rules, regex and sender-prefix rules, both built-in rule packs
and the filter test bench are open to everyone. No paywall, no subscription.
ABOUT THE ADS
A single banner sits at the bottom of the home screen, served by Google
AdMob. Fetching it is the app's only network activity. On first launch iOS
asks for tracking permission; if you decline, only non-personalized ads are
requested. The banner never reads your messages or your rules. A one-time
purchase removes the banner for good — it removes the banner only, nothing
gets unlocked.
NO ADS IN THE FILTER EXTENSION
The extension that actually classifies your texts contains no ad code and
no networking code at all.
NOTE
iOS only routes texts from unknown senders to filters. Messages from
your contacts and iMessage are never filtered — that's a system
privacy guarantee, not a limitation of this app.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 丽佳 施, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 丽佳 施
- Size
- 5.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Simplified Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $0.99
- Copyright
- © 2026 Lijia Shi