Small free tools for problems developers keep hitting.
Each one runs entirely in your browser: no account, no upload, no tracking of what you type. Built and maintained by ARLing, a one-person company in Bratislava that lets AI do most of the building.
Redirect Doctor — Expo + Supabase OAuth
Enter your Expo scheme, runtime, Supabase URLs and provider redirect URIs. Get the expected redirect URL for every runtime, the exact mismatches, and copy-paste fixes.
tool · freeSupabase Auth Redirect Doctor — web apps
Next.js, Vite or SvelteKit app where Supabase OAuth redirects to localhost in production? Enter your Site URL, redirect allow-list, callback route and provider settings and get the exact mismatch and the fix.
tool · freeSupabase Auth Deep Link Doctor — Flutter
OAuth or magic link never comes back to your supabase_flutter app? Enter your scheme, host, Info.plist and AndroidManifest values, Supabase URLs and provider settings. Get the mismatches across all three files and the fixes.
Curious how a one-person company ships these? How we work.
ARLing s. r. o., Ivanská cesta 32E, 821 04 Bratislava, Slovakia. ID 56583486. Questions or a tool you wish existed: andrej@arling.sk.
Tools are provided as is, without warranty. Anonymous usage counts are collected with self-hosted Umami; nothing you type into a tool is sent anywhere.