SaibaTudo

Verified civic information

Independent, open-source, ad-free apps that bring together official open data — from elections to chemistry — so you can check the facts and decide for yourself.

Open the 2026 Elections app Open the Chemistry app

Our apps

Brazil’s 2026 General Elections

Portuguese only

SaibaTudo — Eleições 2026

Look up candidacies, registered polls, rules and results from the open data of Brazil’s Superior Electoral Court (TSE). Ask in plain language: the on-device assistant answers only with official data, cites its source and never recommends candidates.

  • Candidacies by office and state, in a fixed order (office, state and ballot number)
  • Official registration status — not a "clean record" ("Ficha Limpa") certificate
  • Polls registered with the TSE and an educational voting-machine simulator
  • Works offline and updates with digitally signed, verified data
Open the 2026 Elections app

The Android version has not been published on Google Play yet. Meanwhile, use the web app: it can be installed and works offline.

General chemistry — from high school to university

SaibaTudo — Química

Periodic table, compounds and calculators built on open, verified data. Ask in English — for example, “molar mass of water” or “pH of 0.01 mol/L HCl” — and the answer comes from the data, with the source of every number and the steps of each calculation.

  • Interactive periodic table with all 118 elements and their properties (atomic mass, electronegativity, radius, ionization energy, melting and boiling points)
  • 1,971 compounds with formula, molar mass, IUPAC name and a 2D structure drawing; 485 with the official GHS label hazards
  • Step-by-step calculators: molar mass, equation balancing, stoichiometry, concentration and dilution, pH, ideal gas and unit conversion
  • Open sources cited in every answer: PubChem, Wikidata, CODATA, ChEBI, Wikipedia and Wikibooks
  • Safety first: dangerous requests are refused and each substance’s hazards are shown on its page
Open the Chemistry app

Works offline and nothing leaves your device. The Android version is in preparation; meanwhile, the web app can be installed.

Why trust it

Install it on your device

The 2026 Elections and Chemistry apps are PWAs: they run in the browser and can be installed as apps, including for offline use with the data already loaded. Open the app and use the Install app button, or follow the steps for your device.

Android

  1. Open the app (2026 Elections or Chemistry) in Chrome or Edge.
  2. Tap Install app (or the ⋮ menu → Install app / Add to Home screen).
  3. Google Play: coming soon for both apps.

iPhone and iPad

  1. Open the app (2026 Elections or Chemistry) in Safari.
  2. Tap Share (the square with an upward arrow).
  3. Choose Add to Home Screen and confirm.

Windows, Mac and Linux

  1. Open the app (2026 Elections or Chemistry) in Chrome or Edge.
  2. Click the Install app button or the install icon in the address bar.
  3. The app opens in its own window, like any other program.

Open the 2026 Elections app Open the Chemistry app

Public project

Neutrality and independence

SaibaTudo is independent: it has no ties to the TSE, the government or any party. Lists follow a fixed order (office, state and ballot number) and never rank candidates.

Corrections channel

Found an error? Open a public issue on GitHub or use the "Report a problem" button in the app. We fix things transparently.

Open an issue on GitHub

Coming soon