# Sifter - Spam SMS Filter — Spam SMS & MMS Filter > Smart spam SMS and MMS filter for iOS with customizable rules and local processing. (iPhone/iPad app by 磊 汪.) - Source: https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258 (this page in markdown: same URL + `.md`) - Developer: [磊 汪](https://appshunter.io/developer/1063627762) - Category: Utilities, Productivity - Price: $2.99 - Rating: 4.10/5 from 108 App Store ratings · 14 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 10 MB - Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Hong Kong SAR China) - Released: 2017-09-19 - Data updated: 2026-08-27 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258/reviews.md ## What is Sifter? Reclaim your inbox with Sifter, the intelligent and private SMS filter for iOS. Powered by a robust Message Filter extension and secure on-device processing, Sifter gives you absolute control over your messaging experience without compromising your privacy. FOCUS ON WHAT MATTERS Sifter empowers you to design personalized filtering rules to block unwanted texts while keeping your inbox clean and focused. With a refined interface built for speed and clarity, managing your rules is seamless and efficient. KEY FEATURES - RULE-BASED CATEGORIZATION: Easily filter and organize messages into Transactions and Promotions using your own custom rules. - GRANULAR FILTERING: Tailor your protection with specific rules. From simple keywords to sophisticated patterns, you decide exactly what reaches your notification center. - CONTACT MANAGEMENT: Protect your peace of mind by whitelisting trusted contacts or blacklisting specific numbers and entire contact lists. - ADVANCED REGEX ENGINE: Leverage the power of Regular Expressions to create intricate, high-precision filtering rules for complex messaging patterns. - PRIVACY-FIRST ARCHITECTURE: Sifter operates entirely locally on your device. Your messages never leave your phone, ensuring your personal data remains 100% private. SUPPORTED RULE TYPES - Whitelist and Blacklist Users (Contacts/Numbers) - Whitelist and Blacklist Keywords - Transactional and Promotional Categorization - Regex-powered versions of all the above Sifter is your personal gatekeeper. Whether you are blocking marketing noise or organizing important transactional alerts, Sifter provides a private and powerful solution to keep your messaging focused on what truly matters. Download Sifter and take full control over your inbox. ## Key features - Customizable filtering rules - Blacklist and whitelist contacts - Regex filtering for advanced control - Local data processing for privacy - Blocks unwanted SMS and MMS ## Chart rankings - #167 in Top Paid · Utilities (US App Store) ## Recent user reviews (10 of 14) All indexed reviews: https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258/reviews.md ### 5/5 — Delete spam after detection *2026-07-16* The only way the developer can make this app better, and it’s practically perfect already, is to find a way to delete the spam texts on the phone after it detects them. That way they won’t flow to the Mac. ### 1/5 — Worked for a bit *2026-06-16* Worked for a short while and then they figured out how to get around it bc now I’m getting blackmail messages: “you want the political messaging to stop?!” types of messages ### 5/5 — This is a miracle app *2026-06-04* I have gone thru several apps, this is the first one that actually worked. It was easy to set up a profile for me and now I finally have no political text messages and no more about medicare. I have already recommended it to several other people. Now if I could only find something that worked as well for telemarketing phone calls. ### 1/5 — Useless *2025-09-27* Does not work and instructions are in Chinese ### 1/5 — Far from effortless *2025-03-30* Almost completely incomprehensible UX. No instructions anywhere. Why not have a new option in individual spam messages to send the number to the blacklist? No way to do this without manually and awkwardly copy pasting the number into the app. Ridiculous. What a letdown and waste of money. ### 5/5 — It Works *2025-03-26* Works great. You must enable ‘Filter Unknown Senders’ and add numbers you trust to your contacts. I use it to block incessant political campaign spam texts. ### 3/5 — Anything to stop the texts *2025-01-18* I’ll give it a go! It’s not very counterintuitive though! Any tutorials out there? ### 1/5 — Tried to blockPolitical ads *2024-10-10* Doesn’t work!!! Still getting just as many! I’ve put in all the keywords. Waste of $3! Very dissatisfied ### 1/5 — Utterly Useless *2024-09-24* Incomprehensible instructions. Lame. ### 1/5 — Not doing what it is supposed to do *2024-08-09* We have put several keywords into “blacklist” that should block texts that come in using any of those words, and yet texts are still coming through with those exact words in them. This is precisely what the app is designed to prevent. ## Frequently asked questions about Sifter ### How does Sifter filter spam messages? Sifter uses a robust Message Filter extension on iOS 13 and above. You can create personalized rules, including blacklisting and whitelisting specific contacts or using regular expressions to define complex filtering criteria. ### Is my personal information safe with Sifter? Yes, Sifter prioritizes your privacy by operating locally on your device. This means your personal information and filtering rules remain secure and are not processed on external servers. ### What types of filtering rules does Sifter support? Sifter supports a variety of rule types including whitelisting and blacklisting individual users, groups of users, and using regular expressions for both whitelists and blacklists. ### Can I use Sifter on my iPad? Sifter is compatible with iPhones and iPads, providing spam filtering capabilities across your Apple devices. ### How often is Sifter updated? The latest version of Sifter is 25.9.10, and it was last updated on September 10, 2025. Updates typically include new features, bug fixes, and performance improvements. ### What is the price of Sifter? Sifter is a paid application available for a one-time purchase of $2.99. ### What is the age rating for Sifter? Sifter has an age rating of 4+, making it suitable for a wide range of users. ### What do users like about Sifter? Users appreciate Sifter's ability to provide a spam-free messaging experience tailored to their preferences. Its local processing and customizable rules are frequently highlighted as key benefits. ## Version history (last 5 releases) ### 26.4.9 — 2026-04-09 This release introduces a redesigned interface, major architectural improvements, and new Transactions and Promotions filters for a faster, more refined experience. ### 26.4.8 — 2026-04-08 This release introduces a redesigned interface, major architectural improvements, and new Transactions and Promotions filters for a faster, more refined experience. ### 26.4.4 — 2026-04-08 This release introduces a redesigned interface, major architectural improvements, and new Transactions and Promotions filters for a faster, more refined experience. ### 25.9.10 — 2025-09-10 Thank you so much for using Sifter. This release includes bug fixes and improvements. If you are enjoying the app, please consider leaving a review or rating! ### 2.0.2 — 2025-04-03 Thank you so much for using Sifter. This release includes bug fixes and improvements. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*