Independent software studio · Houston, TX

Apps for game day. Websites built to last.

Sienna Logic is a small independent studio in Houston, Texas. We design and build fast, hand-coded websites and web apps for Houston-area and remote clients, and we build focused apps for youth sports.

  • Makers of WalkAmp
  • iOS, Android & web
  • Based in Houston, working anywhere

Products

What we make

A shipped app that teams use every week, a walk-up music playbook, a game you can play right now, and one tool on the way.

Live · Web

On Deck DJ

The walk-up music playbook for youth baseball & softball

Song ideas your league won't bleep, organized by sport, vibe, and age group. A one-tap song finder, ballpark speaker picks, and a guide to running game-day sound without missing an at-bat.

Song lists · Song finder · Gear guide Read the playbook
Live · Web

War of the Generals

Salpakan, playable in your browser

The classic Filipino game of hidden ranks and bluffing, online. Quick-match against other players, send a private room link to a friend, or practice against the CPU on a difficulty ladder. No account needed, and free to play.

Multiplayer · CPU practice · Replays Play now
In development · iOS & Android

Dugout

The offseason tool for youth baseball coaches

Player evaluations and a draft board, roster and depth chart, per-inning game-day lineups on a diamond, and seasons that carry over year to year. Built for the work that happens between games.

Evals · Draft · Lineups · Seasons Ask about early access

Services

Web development, hand-built and fast

We build websites the same way we build our own: hand-coded, quick to load, and easy to change later. No page builders, no plugin sprawl. We work with businesses across the Houston area and with remote clients anywhere. Look at the examples below and view the source. That's the pitch. Read how a project goes.

Product & marketing sites

Landing pages that explain the thing and get the download or signup. Store badges, promo video, pricing, FAQs, and the metadata that makes links look right when shared.

Content sites & guides

Long-form pages, lists, and small interactive tools, structured so they read well on a phone and stay easy to add to a year from now.

Web apps

Browser-based apps with real-time multiplayer, sign-in, and payments when you need them. Built on modern, boring-in-a-good-way infrastructure.

Care & hosting

Fast static hosting, redirects so old links keep working, analytics wired up, and small ongoing changes handled by the same people who built it.

Sites we built and run

walkamp.com

Product site for a mobile app

The home of WalkAmp. A landing page that sells the app, plus how-to guides and walk-up song lists, all hand-coded with no build step.

  • Promo video, pricing, FAQ, and a QR code that opens the right store
  • Guide and song-list sections with clean URLs
  • Structured data and social previews on every page
  • Promo code redemption and a download page that picks the right store

ondeckdj.net

Walk-up song playbook and song finder

A playbook of walk-up song lists, an interactive song finder with audio previews, and ballpark gear guides, with its own retro scoreboard look.

  • Long-form song lists by sport, style, and age group
  • Interactive song finder with audio previews
  • Gear guide with affiliate links and clear disclosure
  • Lazy-loaded WebP images, fast on a phone at the field

War of the Generals

Real-time multiplayer web app

A full game in the browser: matchmaking, private rooms, CPU opponents, replays, and saved formations, running on a serverless back end.

  • React front end with four selectable visual themes
  • Cloudflare Workers and Durable Objects for live game rooms
  • Quick match, private room links, and a CPU difficulty ladder
  • Google sign-in, profiles, and replays

Need a site built?

Tell us what it's for and who it's for. We'll reply with an honest read on scope, timeline, and whether we're the right fit.

About

How we work

Sienna Logic is a small team, not a big agency or app company. That shapes everything we ship.

01

Start with a real problem

Every product here began as something we wanted for ourselves. If it doesn't earn its place on a real field or a real game night, it doesn't ship.

02

Do one job well

Our apps and sites are focused on purpose. Fewer screens, fewer settings, and the important action always one tap away, because game day doesn't wait.

03

Talk to a human

The people who write the code are the same people reading the inbox. Bugs, ideas, and "I wish it did this" go straight to the folks who can fix it.

Have a question, a bug, or a project?

We usually reply within one business day. Partnership and press inquiries are welcome too.