Independent software · Practical experience

Ideas made real.

A collection of business tools, learning apps, and independent projects. Explore the work behind High Desert Apps.

Opening Master preview

Master Chess Openings

Opening Master

Learn the why behind every move. Watch, practice, and test your knowledge of 50+ essential openings with AI-powered explanations.

  • AI explanations
  • Spaced repetition
  • 50+ openings
Sentence Lab preview

Spanish Edition

Sentence Lab

Build sentences, build fluency. Learn Spanish by constructing real sentences with active production and spaced repetition.

  • Active production
  • Spaced repetition
  • Grammar tools
Your Horizon preview

Financial Planning

Your Horizon

Chart your financial future. Track investments, plan for retirement, and visualize your path to financial independence.

  • Investment tracking
  • Retirement planning
  • Visual charts
TripIQ preview

Travel Smarter

TripIQ

Arrive prepared, not clueless. Learn cultural etiquette, essential phrases, and local knowledge before you go.

  • 50+ destinations
  • Cultural guides
  • Essential phrases
SellThisHouse preview

Home Sale Command Center

SellThisHouse

Your complete home-selling companion. Track deadlines, manage tasks, coordinate your team, and compare offers from preparation to closing.

  • Smart task lists
  • Deadline tracking
  • Offer comparison
Tichu preview

Classic Card Game

Tichu

Play the challenging partnership card game online. An interesting mix of poker, bridge and some other unique strategic challenges.

  • Online multiplayer
  • Partner play
  • Ranked matches
PDF Signer preview

Sign Documents

PDF Signer

Sign PDFs quickly and securely. Add signatures, initials, dates, and text fields to any document in seconds.

  • Digital signatures
  • Form fields
  • Secure & private
Thin AI preview

Small Models, Genuine Learning

Thin AI

A research program exploring what AI can do without frontier-scale compute. Small models that genuinely learn — parse, reason, reflect, and retain — all on a single machine.

  • Small models
  • Genuine learning
  • One machine
HolySheet preview

Spreadsheet, Reimagined

HolySheet

A complete spreadsheet built from scratch — 200+ formulas, charts, and pivots — with AI that explains your formulas, diagnoses errors in plain English, and shows where every value came from. Runs entirely in your browser.

  • 200+ formulas
  • AI explanations
  • Provenance tracking
Trading Lab preview

Practice Trading

Trading Lab

Sharpen your trading skills risk-free. Simulate trades with real market data and learn strategies without risking real money.

  • Real market data
  • Paper trading
  • Strategy testing
Pinpoint Geocoder preview

US Geocoding API

Pinpoint Geocoder

Turn addresses into coordinates — fast, accurate, and affordable. 250M+ address points, sub-100ms responses, and no data restrictions at 1/10th the price of major providers.

  • Sub-100ms
  • 250M+ addresses
  • Rooftop accuracy
TradeInvoice preview

Invoicing for Trades

TradeInvoice

Run the back office of your trade business. Manage clients, estimates, jobs, and invoices — track outstanding payments, recurring billing, and revenue, all in one dashboard.

  • Estimates & jobs
  • Recurring invoices
  • Revenue tracking
Cadenza preview

Piano Journal & Library

Cadenza

Master your repertoire, one session at a time. A practice journal and curated library for classical pianists.

  • Practice journal
  • Music library
  • Progress tracking
ArtistPortfolio preview

Showcase Your Art

ArtistPortfolio

Create stunning portfolio websites in minutes. Elegant galleries, custom domains, and beautiful themes for artists.

  • Custom domains
  • Multiple themes
  • Analytics
Reveal The Word preview

Scripture Memorization

Reveal The Word

Study Scripture and memorize for life. Progressive hint modes and spaced repetition help you commit verses to long-term memory. 100% free.

  • Spaced repetition
  • Multiple translations
  • Daily streaks

Have a question or a project in mind?

What can I
help you with?

Need help setting up software, connecting your tools, or building something? Send me a short message.

Contact Jeff

Local to Albuquerque. Happy to talk through a remote project, too.