PrefixBlock vs Ringfold

• 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

The last digits change. Block similar phone numbers with one rule. Ringfold helps you choose which calls to block on your iPhone. Start from a number, compare two numbers, or review numbers detected in a screenshot. PREVIEW BEFORE YOU BLOCK Block one exact number or a supported range with the same prefix and changing final digits. Compare two numbers to find the smallest supported shared pattern. See the first and last number and the count of possible numbers before saving. Templates help you choose a starting range. SCREENSHOTS AND NUMBER LISTS Choose a screenshot and review the phone numbers recognized on your device. With Pro, add selected exact numbers to a new or existing number list, even when they do not share a prefix. Lists contain the selected numbers, not the gaps between them. A single selected number can also open the rule editor: check its range before saving. Ringfold does not read your call history automatically. EXCEPTIONS, CHECKER AND CALLER LABELS Keep specific numbers as exceptions to Ringfold rules. Check a number against your saved rules. Your rule names provide caller labels where iOS displays identification; they are your labels, not a spam reputation lookup. AUTOMATIC UPDATES AFTER ACTIVATION Enable Ringfold in iPhone Call Blocking & Identification settings. After activation, saved rules, pauses, deletions, exceptions and confirmed imports update iOS automatically while the app runs. Check the update status; failed updates need attention. KEEP YOUR RULES Choose the number country independently of your iPhone region. Export rules and exceptions to Files. Preview a backup import before adding it; existing rules stay unchanged and duplicates are skipped. Undo the last deletion during your session. START FREE, ADD MORE WITH PRO One ordinary rule for an exact number or range is free. Pro unlocks multiple rules and number lists with a monthly or yearly subscription. Current prices and any available free trial offers are shown before purchase. Subscriptions renew automatically unless cancelled. Payment is charged to your Apple Account. Manage or cancel your subscription in the App Store. Rules and exceptions stay on your iPhone unless you export them. No account, ads or contact uploads. Blocking works offline after setup and a successful update. Usage analytics excludes phone numbers and rule names. A range can include wanted callers. Counts mean possible numbers, not calls stopped. Exceptions apply only to Ringfold. iOS, contacts, recently dialled numbers, other identification services and your carrier can affect blocking, labels and voicemail. Ringfold does not automatically detect every spam caller. Privacy Policy: https://katenin.dev/ringfold/privacy Terms and Conditions: https://katenin.dev/ringfold/terms