Michael Gritzbach

Selected digital work · 2026

Systems for the People.

I build practical products, turning dense institutional information into tools people can actually use, as well as simple apps that solve friction points efficiently.

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Michael Gritzbach
Michael Gritzbach@mgritzbach San Francisco, CA
20repositories
Contribution activityLive from GitHub
GitHub contribution activity graph for @mgritzbach
JavaScriptTypeScriptKotlinPython
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08 flagship builds

Building solutions from unstructured institutional data.

Each project starts with a concrete friction point and is shaped around the people who have to live with the solution.

01 / Education technology

HKS Course Explorer

One clear view across courses, faculty, schedules, and evaluations.

A full-stack planning tool built independently for Harvard Kennedy School students. It brings current listings, historical Q Guide evaluations, degree requirements, schedule conflicts, and an AI course advisor into one coherent experience.

5,581
evaluation records
Daily
catalog sync
All Harvard
cross-registration
Open live product View source
The live HKS Course Explorer interface showing 2026 course comparisons
Actual product capture
02 / Personal utility

Contact Networking Pro

A faster, more private way to exchange details in the room.

A native Android app for standards-compliant contact QRs, one-tap presentation, and on-device business-card capture. It removes the usual account, cloud, and tracking layers from a simple human interaction.

  • Home-screen widget and Quick Settings access
  • Local OCR, no backend, no analytics
  • Contact, LinkedIn, WhatsApp, and custom panels
Download latest appLatest release View source
Contact Networking Pro v1.8 running on Android with a contact QR ready to share
Actual product capture
03 / Community infrastructure

YCA Alumni Network

A global community made searchable, visible, and useful.

An independent alumni directory for Yenching Academy at Peking University. A tactile WebGL globe, fuzzy search, cohort filters, and carefully reconciled professional data help a distributed community find one another across 90 countries.

1,281
alumni records
90
countries
305
city-level pins
Explore the network
The live YCA Alumni Network interface showing its searchable directory and global map
Actual product capture
04 / Hospitality utility

Casa Michele

A pocket-sized bar system for guests and bartenders.

Casa Michele v4 turns a cocktail night into one shared service flow. Guests join a protected event, browse 41 cocktails, and order from their phones; bartenders manage live orders and ingredient availability from the Android app or web dashboard.

  • Android app and responsive web menu with 41 cocktails
  • PIN-protected bartender rooms with live stock and order status
  • Guest-to-bar ordering with in-app ready notifications
Open live app Android test APK View sourceCocktail archive
Casa Michele Android app icon featuring a gold cocktail glass
Android app identity
05 / Offline recipe companion

Michael's Cookbook

The entire family cookbook and Casa Michele bar, always in your pocket.

A fully offline Android cookbook that preserves the website's 59 family recipes and adds all 41 Casa Michele cocktails in the same ingredient-and-method table structure, complete with four languages and dual cl/ml measures.

  • 59 family recipes and 41 Casa Michele cocktails
  • English, German, Chinese, and Russian, fully offline
  • Ingredient search, categories, favorites, and cl/ml measures
Download APK View sourceBrowse web cookbook
Michael's Cookbook Android app showing the offline multilingual recipe collection
Android app preview
06 / Presentation tooling

Slidewright

A deterministic pipeline for native, editable PowerPoint decks.

A Codex plugin and layout compiler that turns ideas and structured content into PowerPoint files built from native, editable objects. It compiles layout constraints, fits text at conventional integer sizes, renders, lints, audits OOXML, and packages verification evidence before delivery.

  • Native editable text, shapes, charts, tables, and groups
  • Deterministic margins, padding, and text fitting
  • Layout linting, OOXML audits, and delivery evidence
Install in CodexLatest release View source
A real Slidewright-rendered PowerPoint slide reading Ideas in, PowerPoint out, formatting intact
Actual product capture
07 / Creative utility

Motion Sticker Lab

Turn any animation into a polished WhatsApp sticker pack, privately, on-device.

Motion Sticker Lab is an Android creation studio for converting GIFs and short videos into animated WhatsApp sticker packs. It combines local conversion with named pack management, previews, editing, direct Android Share imports, and the official WhatsApp handoff.

  • GIF, MP4, WebM, and MOV conversion to animated WebP
  • Named multi-pack library with previews, reordering, moving, and undo
  • Direct Android Share import and official WhatsApp pack handoff
Download APKLatest release View source
Motion Sticker Lab Android app showing a named animated sticker pack in its three-column editor
Actual product capture
08 / Editorial tooling

DeSlopAI

Every text block has to communicate a fact, reason, decision, or action.

A local Codex skill and plugin that audits PowerPoint, Word, PDF, Markdown, and plain text for vague claims, empty phrases, repetition, unsupported conclusions, and missing context. Rewrites stay bound to the source, preserve protected facts, and are independently verified before delivery.

  • Meaning and value review for every eligible text block
  • Protected numbers, quotations, citations, URLs, and terminology
  • Private style profiles, source-safe copies, and verification receipts
Install in CodexLatest release View source
DeSlopAI audit preview comparing an empty phrase with a specific action and showing source-safety checks
Audit workflow preview

The throughline

Useful technology begins with understanding the system and building radically for the person using it.

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