Spam Text Blocker & Filter vs PrefixBlock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spam Text Blocker & Filter
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Suspicious texts wear you down — fake parcel fees, “your account is locked” alerts, prize bait, endless promos. Blockr filters scam texts from unknown senders, with phishing, promotions and prize bait filtering available with Pro. Turn on Blockr once as your text message filter. From then on, iOS hands texts from unknown senders to Blockr, and junk is moved to your Junk or Promotions folder. Texts from your contacts are never filtered. WHAT BLOCKR DOES • Filters scam texts from unknown senders — free, with no time limit • Checks eligible incoming texts and texts you paste on your iPhone; message content isn't uploaded • Check any text — paste something suspicious and see what Blockr finds • Explains itself — every check comes with a plain-language reason • A setup that fits you — tell Blockr which texts bother you most BLOCKR PRO • Every category: phishing, promotions and prize bait, not just scams • Strict mode for borderline junk • Rules for unknown senders: block and allow lists, number prefixes, email senders, keywords, and silence unknown senders • View up to 500 saved flagged checks (free shows the latest three) The weekly plan includes a 3-day free trial for eligible new subscribers. Yearly subscriptions and a one-time lifetime purchase are also available. After the trial, the weekly subscription renews at the price shown before purchase. Weekly and yearly subscriptions renew automatically unless cancelled at least 24 hours before the trial or billing period ends; manage them in your Apple Account settings. Good to know: Blockr sorts eligible unknown-sender texts into folders; it doesn't delete messages or block calls. Automatic filtering excludes your contacts. Support: https://app.notion.com/p/Support-Blockr-39c0cc7ee736805a9e88c3753f42ea47?source=copy_link Privacy Policy: https://app.notion.com/p/Privacy-Policy-Block-39c0cc7ee736801e9af4c60ca236830e?source=copy_link Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PrefixBlock
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• 17 languages and 69 countries — block prefixes at home and abroad Chặn Đầu Số identifies and warns you about spam calls and texts by prefix. When a number from a prefix you added calls, the app shows a "Spam" label right on your screen. Other apps only block one number at a time — block this one, they call from the next. Chặn Đầu Số works differently: you block the whole prefix (024899, for example) and the app covers every number starting with it. Spam operations buy numbers in bulk blocks, so blocking by prefix hits them at the source. Key features: • Block calls by landline prefix — 024 (Hanoi), 028 (Ho Chi Minh City) and more • Filter spam SMS from those same prefixes too • Quick-block suggestions for the most common telesales prefixes — one tap • "Warn only" mode — show a label instead of hard-blocking, your choice • Bilingual Vietnamese / English, switch right inside the app Privacy first: • Does NOT read or upload your contacts • NO ads, NO tracking • Your block list stays on your device Free for up to 500,000 numbers. Upgrade to Premium (monthly / yearly / lifetime) to block without limits. Note: iOS handles blocking silently, and it does not block numbers saved in your Contacts. Terms of Use: https://phungdoanh.github.io/term.html Privacy Policy: https://phungdoanh.github.io/privacy_policy.html
Screenshots
Verdict
The clearest difference is update cadence: PrefixBlock at weekly against Spam Text Blocker & Filter's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Spam Text Blocker & Filter sells 4 in-app purchases, starting at $2.99 per 7 days and PrefixBlock sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Spam Text Blocker & Filter ships an update every 3 months, PrefixBlock weekly. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.
| Parameter | Spam Text Blocker & Filter | PrefixBlock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 19 MB | 4 MB |
| Age rating | +4 | 4+ |
| Developer | MUHAMMET USLU | Phung Doanh |
In-app purchases
Spam Text Blocker & Filter
- Weekly Pro3 Days trial$2.997 Days
- Yearly Pro$44.991 Year
- Tip$4.99
- Lifetime Pro$79.99
PrefixBlock
- Chặn đầu số pro tháng$0.991 Month
- Chặn đầu số pro năm$4.991 Year
- Chặn đầu số trọn đời$9.99
Questions
Is Spam Text Blocker & Filter free?
Is PrefixBlock free?
Do Spam Text Blocker & Filter or PrefixBlock have ads?
Which is updated more often, Spam Text Blocker & Filter or PrefixBlock?
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