Oblio One: Spam Call Blocker

Block spam calls before your phone rings. Oblio One is a spam call blocker that runs entirely on your device: no servers of ours, your data stays on your phone.

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HOW IT WORKS
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Oblio One intercepts each incoming call and decides whether to let it through or stop it, based on the rules you set. Everything happens locally, in a fraction of a second, before your phone ever rings.

For text messages, Oblio One hides the notification of those from unknown or blocked numbers: the message stays in your Messages app.

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KEY FEATURES
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• Block unknown callers: automatically stop anyone who is not in your contacts
• Blocklist: block specific numbers you never want to hear from again
• Whitelist: important numbers always ring, even while the filter is on
• Groups: groups picked from your contacts to block or allow (1 free with up to 3 numbers, unlimited with PRO)
• Prefix blocking: block — or allow — entire ranges of numbers by entering only the beginning (for example 0800, +44, 020) and wipe out call centres in one move
• Emergency numbers: 112 always gets through, even at night; with PRO you can add local ones such as 999
• SMS shield: hides notifications from unknown or blocked numbers (the message stays in your Messages app)
• Anti-smishing: warns you when a text contains suspicious links, like those from fake couriers, banks or public services
• Quick suspend: expecting a delivery? Pause the filter with one tap from the dashboard
• Local history: see what was blocked and why
• Statistics: how many calls and texts you stopped today, this week, this month
• Home widget: check the filter status without opening the app

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REAL PRIVACY
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Most anti spam apps need to upload your contacts, or the number calling you, to a server in order to work. Oblio One does not.

• Works without an internet connection (needed only to buy PRO on Google Play)
• Contacts, calls and texts never leave your phone: we have no servers
• No tracking, no ads, no profiling
• The content of your messages is never stored or transmitted
• The local archive is encrypted with AES-256
• Delete all your data whenever you like, right from the app

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PRO VERSION
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A one-time purchase, with no subscription and no renewals:

• Automatic time profiles: set up Work, Home, Sleep, Holiday and Open (the hours when everyone rings), and let the app apply the right rules at the right time
• Customisable emergency numbers: add to or edit the list of numbers that must always get through
• Unlimited blocking rules
• Complete history
• PIN protection with a recovery code

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WHO IT IS FOR
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For anyone buried in call centre calls. For people who work and do not want to be interrupted. For parents protecting their children from scam texts. And for anyone helping an elderly relative, the favourite target of phone scammers.

Setting it up takes a couple of minutes: a short guided walkthrough on first launch explains what each permission is used for, and a setup card checks that the app is allowed to keep running in the background on your device.

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FREQUENTLY ASKED
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What if someone who is not in my contacts needs to reach me?
Add the number to your Trusted list and it will always ring, or suspend the filter with one tap when you are expecting a call. One more tip: record a voicemail greeting like "this phone takes calls from known contacts: leave your name, reason and number and I will call you back". Anyone with a real reason has a way through, and you decide who to call back. The History keeps a record of everything that was stopped.

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Available in English, Italian, German, French and Spanish. Light and dark theme.

Download Oblio One and take back control of your phone.

© 2026 Oblio One — Robertino Brunaldi