diff --git a/public/js/app.js b/public/js/app.js
index b009f43..91bcfaf 100644
--- a/public/js/app.js
+++ b/public/js/app.js
@@ -1,13 +1,20 @@
 import {el, initTheme, enhanceSelects} from './util.js';
 
 const CALCS = [
+  // Financial calculators
   { id:'interest',  name:'Interest (Simple & Compound)',  about:'Simple/compound interest', path:'../calculators/interest.js' },
-  { id:'raid',      name:'RAID',      about:'Usable capacity',         path:'../calculators/raid.js' },
-  { id:'bandwidth', name:'Bandwidth', about:'Bits↔bytes unit conv.',   path:'../calculators/bandwidth.js' },
-  { id:'nmea',      name:'NMEA',      about:'0183 XOR checksum',       path:'../calculators/nmea.js' },
   { id:'currency',  name:'Currency Converter', about:'Convert between currencies', path:'../calculators/currency.js' },
+  
+  // Storage/System Administration
+  { id:'raid',      name:'RAID',      about:'Usable capacity',         path:'../calculators/raid.js' },
   { id:'zfs',       name:'ZFS',       about:'Pool configuration & performance', path:'../calculators/zfs.js' },
-  { id:'subnet',    name:'IP Subnet', about:'IPv4/IPv6 subnet calculations', path:'../calculators/subnet.js' }
+  
+  // Network/System Administration  
+  { id:'bandwidth', name:'Bandwidth', about:'Bits↔bytes unit conv.',   path:'../calculators/bandwidth.js' },
+  { id:'subnet',    name:'IP Subnet', about:'IPv4/IPv6 subnet calculations', path:'../calculators/subnet.js' },
+  
+  // Specialized Tools
+  { id:'nmea',      name:'NMEA',      about:'0183 XOR checksum',       path:'../calculators/nmea.js' }
 ];
 
 const navEl   = document.getElementById('nav');