AppHaven · Hachioji, Japan
AI and Python tools you can put to work
We build practical software for document search, video transcripts, Office workflows, and API integrations — then publish the guides behind the work.
What we do
Three ways to work with AppHaven — start with a product, or read how we build.
Products
Desktop and web utilities for search, transcripts, and writing — including SageSearch and our video tools.
Integrations
License checks, Make.com and n8n workflows, and APIs (OpenAI, OpenRouter, Gumroad, SureCart) wired into real software.
Guides
Notes on local AI, document search, and shipping Python tools without handing the project to a model.
Featured products
Start here if you want something you can install and use today.
SageSearch
Full-text search across your documents, with in-context results you can scan instead of opening every file.
YT Video Downloader + Transcriber
Download YouTube audio and video, cut clips, grab thumbnails, and transcribe speech on your own PC. Nothing is uploaded.
Writing and Office tools
AI rephrasing and document helpers for Microsoft Word and related Office work, aimed at drafts you still want to own.
New product notes
Short introductions to three AppHaven tools — the same names you will see on the Products page.
YT Video Downloader + Transcriber
Download YouTube audio and video, cut clips, grab thumbnails, and transcribe speech on your own PC. Nothing is uploaded.
Loop Finder
Upload a track, detect seamless loops, preview them on a waveform, and export MP3 clips in the browser.
TimeKeeper
A local-only Windows tray app that records the active window and turns the day into a report you can label by task.
Latest writing
Guides and product notes from the studio.
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Introducing TimeKeeper
TimeKeeper is a local-only Windows tray app that records the active window on a schedule, stores it in SQLite on your PC,…
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Introducing Loop Finder
Loop Finder uploads a track, detects seamless loop points, lets you preview and fine-tune them on a waveform, and exports MP3 clips…
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Introducing YT Video Downloader + Transcriber
YT Video Downloader + Transcriber is AppHaven’s Windows desktop tool for downloading YouTube audio and video, cutting clips, grabbing thumbnails, and transcribing…
The studio
Independent software from Hachioji
AppHaven is a small studio in Hachioji, Japan. We use Python, PHP, JavaScript, and VBA to put AI into tools people already use — search, video, Word, and the APIs behind a store.
If you have a product idea, write to projects@apphaven.net.
