What changed when we polished all 22 PureHub mini-apps

PureHub is a community-built collection of everyday utility tools. It is free, open source, and has no ads or mandatory account.

This week we completed a shared experience and engineering pass across the full 22-tool catalog.

A calmer mobile interface

Every mini-app now uses the same compact surface system: clearer hierarchy, stronger contrast, visible focus states, consistent actions, and spacing designed for one-handed use. Tool pages also explain whether they work offline, process data locally, or need a download.

Less code on the first route

OCR and Password Vault no longer live inside the shared mini-app bundle. They are loaded only when their routes are opened. The shared mini-app JavaScript chunk dropped from about 48.6 KB to 43.4 KB before gzip.

OCR now lets users choose English, Vietnamese, or Simplified Chinese and downloads only that trained-data pack on first use.

Safer Vault defaults

New web Vault entries use AES-GCM with per-entry salt and IV plus PBKDF2-HMAC-SHA-256 at 600,000 iterations. We added auto-lock, timed reveal, strict backup validation, bounded records, screenshot protection on Android, and safer clipboard handling.

This is an internal hardening pass, not an independent security audit. We document the current threat model and limitations in the repository.

Tested on real hardware

The Android suite now traverses all 22 tools and verifies packaged permission and backup contracts. All four instrumentation tests passed on a physical RMX3941 device, alongside unit tests, lint, and production builds.

Try the updated tools: https://hub.blissbiovn.com/en/tools

Source and implementation notes: https://github.com/shoyrulove-dev/PureHub/commit/3f64a51

Which mini-app should receive the next deeper feature upgrade?