ByteApps.github.io/index.html at master · ByteApps/ByteApps.github.io · GitHub

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<!DOCTYPE html>
<htmllang="en">
<head>
<metacharset="utf-8">
<metaname="viewport" content="width=device-width, initial-scale=1">
<title>ByteApps LLC</title>
<metaname="description" content="ByteApps LLC is an independent software studio in Denver, Colorado — maker of Graffito and open-source tools for Passport Prime.">
<linkrel="icon" href="assets/favicon.svg" type="image/svg+xml">
<style>
:root {
--bg:#10151b;
--bg-card:#171e26;
--text:#e8edf2;
--text-dim:#9aa7b4;
--accent:#c47a1a;
--accent-soft:#e09a3e;
--border:#232d38;
--radius:14px;
 }
* { margin:0; padding:0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
background:var(--bg);
color:var(--text);
font:16px/1.65 -apple-system, BlinkMacSystemFont,"Segoe UI", Roboto, Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
 }
 .wrap { max-width:880px; margin:0 auto; padding:024px; }
header { padding:96px064px; text-align: center; }
 .logo {
width:72px; height:72px; margin:0 auto 24px; display: block;
 }
h1 { font-size:2.4rem; letter-spacing:-0.02em; }
h1span { color:var(--accent-soft); }
 .tagline { color:var(--text-dim); font-size:1.15rem; max-width:34em; margin:12px auto 0; }
section { padding:40px0; }
h2 {
font-size:0.85rem; text-transform: uppercase; letter-spacing:0.12em;
color:var(--accent-soft); margin-bottom:20px;
 }
 .card {
background:var(--bg-card); border:1px solid var(--border);
border-radius:var(--radius); padding:28px; display: flex; gap:22px;
align-items: flex-start;
 }
 .cardimg { width:56px; height:56px; flex: none; border-radius:12px; }
 .cardh3 { font-size:1.25rem; margin-bottom:6px; }
 .cardp { color:var(--text-dim); }
 .card .links { margin-top:12px; }
 .store-badges { display: flex; gap:12px; flex-wrap: wrap; margin-top:16px; }
 .store-badgesimg { height:48px; width: auto; display: block; }
 .store-badgesa:hoverimg { opacity:0.85; }
 .trademark { margin-top:10px; font-size:0.72rem; color:var(--text-dim); opacity:0.7; }
/* Slint attribution. Section 2 of the Slint Royalty-free Desktop, Mobile
 and Web Applications License 2.0 grants the license only if the app
 shows the AboutSlint widget or this badge sits on a public page where
 the app can be found. Graffito does both; do not remove either. */
 .attribution { margin-top:16px; }
 .attributionimg { width:132px; height: auto; border-radius:0; display: block; }
a { color:var(--accent-soft); text-decoration: none; }
a:hover { text-decoration: underline; }
 .badge {
display: inline-block; font-size:0.8rem; color:var(--text-dim);
border:1px solid var(--border); border-radius:100px; padding:2px12px;
margin-left:8px; vertical-align:2px;
 }
 .grid {
display: grid; grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
gap:14px;
 }
 .tool {
display: flex; gap:14px; align-items: center;
background:var(--bg-card); border:1px solid var(--border);
border-radius:var(--radius); padding:16px;
 }
 .toolimg { width:36px; height:36px; border-radius:8px; flex: none; }
 .toola { color:var(--text); font-weight:600; font-size:0.95rem; }
 .toolsmall { display: block; color:var(--text-dim); font-size:0.8rem; line-height:1.4; }
footer {
border-top:1px solid var(--border); margin-top:48px; padding:36px056px;
color:var(--text-dim); font-size:0.9rem; text-align: center;
 }
footera { color:var(--text-dim); }
@media (max-width:560px) {
header { padding:64px040px; }
h1 { font-size:1.9rem; }
 .card { flex-direction: column; }
 }
</style>
</head>
<body>

<headerclass="wrap">
<imgclass="logo" src="assets/favicon.svg" alt="ByteApps logo">
<h1>Byte<span>Apps</span> LLC</h1>
<pclass="tagline">An independent software studio in Denver, Colorado.
 We build privacy-respecting apps for iPhone, Android, Mac, and the Passport&nbsp;Prime.</p>
</header>

<mainclass="wrap">
<sectionid="products">
<h2>Product</h2>
<divclass="card">
<imgsrc="assets/icons/graffito.svg" alt="Graffito icon">
<div>
<h3>Graffito <spanclass="badge">Bitcoin · Notes</span></h3>
<p>Personal notes on the bitcoin blockchain. Compose, encrypt, and sign
 completely offline — on a Passport Prime or your own devices — then
 broadcast from anywhere. Your words, sealed by your keys, carried by the
 most durable public record ever built.</p>
<divclass="store-badges">
<ahref="https://testflight.apple.com/join/WctNAbGu" aria-label="Join the iPhone and Mac beta on TestFlight">
<imgsrc="assets/badges/testflight.svg" alt="Join the beta on TestFlight"></a>
<ahref="https://play.google.com/store/apps/details?id=com.byteapps.graffito" aria-label="Get the Android beta on Google Play">
<imgsrc="assets/badges/google-play.svg" alt="Get it on Google Play"></a>
</div>
<pclass="links">
<ahref="https://byteapps.com/graffito/companion/">Web companion</a>
</p>
<pclass="trademark">Apple, the Apple logo, and TestFlight are trademarks of Apple Inc.
 Google Play and the Google Play logo are trademarks of Google LLC.</p>
</div>
</div>
</section>

<sectionid="open-source">
<h2>Open source</h2>
<divclass="grid">
<divclass="tool"><imgsrc="assets/icons/prime-pgp-keychain.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-pgp-keychain">PGP Keychain</a>
<small>OpenPGP keys on Passport Prime</small></span></div>
<divclass="tool"><imgsrc="assets/icons/prime-paper-wallet.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-paper-wallet">Paper Wallet</a>
<small>Offline bitcoin gift bills</small></span></div>
<divclass="tool"><imgsrc="assets/icons/prime-bip85.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-bip85">BIP-85 Seeds</a>
<small>Deterministic child seeds</small></span></div>
<divclass="tool"><imgsrc="assets/icons/prime-text-editor.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-text-editor">Text Editor</a>
<small>Edit text on the Prime</small></span></div>
<divclass="tool"><imgsrc="assets/icons/prime-pdf-viewer.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-pdf-viewer">PDF Viewer</a>
<small>Pure-Rust PDF reading</small></span></div>
<divclass="tool"><imgsrc="assets/icons/prime-image-viewer.svg" alt="">
<span><ahref="https://github.com/ByteApps/prime-image-viewer">Image Viewer</a>
<small>Safe image decoding</small></span></div>
</div>
</section>

<sectionid="verify">
<h2>Verify our apps</h2>
<p>Passport&nbsp;Prime apps from ByteApps are signed with our publisher
 certificate — <ahref="byteapps.crt" download>byteapps.crt</a>. Before
 trusting it on your device (Settings &gt; Apps &gt; Allowed Publishers),
 check that its fingerprint matches:</p>
<p><codestyle="display:block;overflow-wrap:anywhere;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:14px">1bca27c8e765a77fd44922bc058b815b46e627d68f2996e8c38ca6997b6be6f9</code></p>
<p><small>Reproduce it yourself — SHA-256 of the certificate's compressed public key:<br>
<codestyle="overflow-wrap:anywhere">openssl x509 -in byteapps.crt -pubkey -noout | openssl ec -pubin -conv_form compressed -outform DER | tail -c 33 | shasum -a 256</code></small></p>
</section>

<sectionid="contact">
<h2>Contact</h2>
<p>ByteApps LLC · Denver, Colorado<br>
<ahref="mailto:contact@byteapps.com">contact@byteapps.com</a></p>
</section>
</main>

<footer>
<divclass="wrap">
 © 2026 ByteApps LLC. All rights reserved.<br>
 Bitcoin is better money. Software is how we spend it well.
</div>
</footer>

</body>
</html>