Android · Invite-Only Beta

Selin

Your AI, in your pocket. This build brings every specialist assistant to life.

Android · APK · 89 MB

Download the beta

Installs alongside nothing else — no store account, no waiting on review.

Download APK Or open the EAS build page
Scan to install
Build 95a94510 Channel preview Expo SDK 54 Updated Jul 11, 2026

What's in this build

Live, streaming replies

Every specialist assistant now answers in real time, word by word, instead of waiting for the full response.

Chemistry, fully equipped

Look up any compound in PubChem, balance equations instantly, and run molarity, dilution, gas-law and pH calculators.

Finance with live charts

Tap any stock or coin for an interactive price chart, search for any symbol, and see upcoming earnings.

A real writer's thesaurus

Synonyms, rhymes, near-rhymes and describing words — powered by Datamuse, right inside Selin Writers.

Law, Tech & Med research

Search U.S. Code statutes and read full court opinions, look up CVE vulnerabilities, and pull ICD-10 codes and PubMed literature.

Photos in chat, saved history

Attach a photo and ask about it in any assistant — and each one now remembers your conversation between visits.

See it in action

swipe →
Selin Chemistry compound lookup showing caffeine's structure and properties
Compound lookup
Chemistry · PubChem structure & data
Selin Finance showing a live AAPL price chart in a detail sheet
Live price charts
Finance · tap any quote
Selin Writers thesaurus showing synonyms for the word happy
Thesaurus & rhymes
Writers · synonyms, rhymes, more
Selin Chemistry equation balancer showing a balanced combustion reaction
Equation balancer
Chemistry · balanced instantly

How to install

Four quick steps

  1. Download — tap the button above, or scan the code with your phone's camera.

  2. Open the file — tap selin.apk in your notifications or Downloads.

  3. Allow the install — if Android warns about an unknown source, choose Settings → Allow, then Install.

  4. Sign in — open Selin and log in, or create an account to start.

Coming soon

iOS beta

An iPhone build lands on TestFlight as soon as our Apple Developer enrollment clears.

Want an iOS invite? Message Dylan and you'll be first on the list.

Updates arrive automatically. Once installed, this build pulls new features over the air — just reopen the app. Found something off? Use the in-app Feedback tab; it comes straight to us.