LogBook - Mileage Tracker

Fast GST is a complete GST billing, invoice maker and tax invoice app with the same fast GST calculator you already rely on built in.

CutOnce is a construction calculator designed for jobsites, featuring stair, rafter, and roofing materials calculations, as well as concrete blocks, brick, crown moulding angles, concrete footings, and board feet calculations.

Obsidian is an app for creating a knowledge base from local Markdown files with graph visualization and plugins; on mobile platforms it suffers from numerous bugs with interactivity and text input.

An app for managing class schedules with support for homework, reminders, and device synchronization via widgets on iOS and Apple Watch.

A simple menstruation tracker with a menstrual cycle calendar, period predictions, and no ads.

A minimalist diary for manual tracking of expenses and income without bank connection, featuring categories, statistics, and local device storage.

Apex Notes is a fast, minimalist, and privacy-first notepad designed for distraction-free writing, daily journaling, sketching, and smart organization.

Make small habits stick with Life Engine, a habit tracker and routine planner for everyday progress.