# SinSpam > SinSpam is a 100% free Android app for blocking unwanted calls. Extreme Mode is included free and has no ads. Developed by KEB.mx with support from mercax.com. SinSpam’s main advantage is that you do not even notice a spammer tried to call: it blocks the call before it interrupts you. Other apps in their free versions show “spam” or “possible spam” on the screen, but by then they have already interrupted you. SinSpam protects your attention and peace of mind. SinSpam supports Android 10 and later and offers Low, Medium, High and Extreme protection levels in one app. The app and website support English, Spanish, Portuguese and Hindi. Every website page is delivered as complete, readable HTML in its language, including the public report figures. JavaScript improves navigation and interactive charts. All features are free, with no subscriptions or paid upgrades. In Low, Medium and High, existing call windows can show a mercax.com banner. Extreme Mode has no ads. ## Reference - [Complete reference · English / Español / Português / हिन्दी](https://www.sinspam.org/llms-full.txt): installation, activation, protection levels, calls, votes, language, data and privacy. - [Google Play](https://play.google.com/store/apps/details?id=mx.keb.bloqueador): official installation. ## Public reputation lookup for services and AI SinSpam provides a free public reputation API. You may use it for any purpose, without registration or an API key. Use `www.sinspam.org`. To look up a full international phone number such as `+524429212093`, remove the `+` and request this JSON URL: - JSON: `https://www.sinspam.org/api/reputation/524429212093.json` The response has exactly three values: `positive_votes` is the number of “Not annoying” votes; `negative_votes` is the number of “Annoying” votes; `queried_at` is the UTC ISO 8601 timestamp of the lookup. A valid number with no available votes returns both counts as zero. Zero votes means no opinions are available. The lookup is updated every 24 hours. The API supports GET, HEAD and browser requests through CORS. Invalid numbers return HTTP 422. See the HTML manual for examples and response details. There is one human lookup page per language. Enter the complete phone number with `+` and the country calling code. Results appear on that page; SinSpam does not publish an index of individual phone pages. ## Website languages ### English - [Home](https://www.sinspam.org/) - [Extreme Mode](https://www.sinspam.org/extremo/) - [Help and tutorial](https://www.sinspam.org/ayuda/) - [App privacy notice](https://www.sinspam.org/privacidad/) - [SinSpam in numbers](https://www.sinspam.org/report/) - [Look up a phone number](https://www.sinspam.org/reputation/) - [Public API manual](https://www.sinspam.org/api/) ### Español - [Inicio](https://www.sinspam.org/es/) - [Modo Extremo](https://www.sinspam.org/es/extremo/) - [Ayuda y tutorial](https://www.sinspam.org/es/ayuda/) - [Aviso de privacidad de la app](https://www.sinspam.org/es/privacidad/) - [SinSpam en cifras](https://www.sinspam.org/es/reporte/) - [Consultar un número](https://www.sinspam.org/es/reputacion/) - [Manual de la API pública](https://www.sinspam.org/es/api/) ### Português - [Início](https://www.sinspam.org/pt/) - [Modo Extremo](https://www.sinspam.org/pt/extremo/) - [Ajuda e tutorial](https://www.sinspam.org/pt/ayuda/) - [Aviso de privacidade do app](https://www.sinspam.org/pt/privacidad/) - [SinSpam em números](https://www.sinspam.org/pt/reporte/) - [Consultar um número](https://www.sinspam.org/pt/reputacao/) - [Manual da API pública](https://www.sinspam.org/pt/api/) ### हिन्दी - [मुख्य पृष्ठ](https://www.sinspam.org/hi/) - [एक्सट्रीम मोड](https://www.sinspam.org/hi/extremo/) - [सहायता और निर्देश](https://www.sinspam.org/hi/ayuda/) - [ऐप की गोपनीयता सूचना](https://www.sinspam.org/hi/privacidad/) - [आँकड़ों में SinSpam](https://www.sinspam.org/hi/reporte/) - [फ़ोन नंबर खोजें](https://www.sinspam.org/hi/reputation/) - [सार्वजनिक API का मैन्युअल](https://www.sinspam.org/hi/api/)