diff --git a/public/pos/pos-app.js b/public/pos/pos-app.js
index e0404dc..bf9fd20 100644
--- a/public/pos/pos-app.js
+++ b/public/pos/pos-app.js
@@ -315,6 +315,16 @@ function initials(s){
   return parts.map(p=>p[0]||'').join('').toUpperCase().slice(0,2);
 }
 
+// Decimal keyboards on South African phones type "," as the decimal key.
+// Treat it as ".", drop everything else, keep only the first separator and
+// at most 2 decimals (cents), so "12,50" -> "12.50" instead of 1250.
+function cleanDecimal(v){
+  let s = String(v||'').replace(/,/g,'.').replace(/[^0-9.]/g,'');
+  const i = s.indexOf('.');
+  if(i !== -1) s = s.slice(0,i+1) + s.slice(i+1).replace(/\./g,'').slice(0,2);
+  return s;
+}
+
 // ---------------- custom (ad-hoc) lines ----------------
 //
 // A line the cashier types by hand — "Bolt cutting" at R20 — that
@@ -368,7 +378,7 @@ function closeCustomItem(){
 }
 function saveCustomItem(){
   const desc = document.getElementById('customDesc').value;
-  const price = document.getElementById('customPrice').value.replace(/[^0-9.]/g,'');
+  const price = cleanDecimal(document.getElementById('customPrice').value);
   const p = addCustomItem(desc, Number(price));
   if(p) closeCustomItem();
 }
@@ -807,7 +817,7 @@ document.addEventListener('input', e=>{
 });
 document.addEventListener('input', e=>{
   if(e.target.id!=='givenIn') return;
-  const raw = e.target.value.replace(/[^0-9.]/g,'');
+  const raw = cleanDecimal(e.target.value);
   e.target.value = raw;
   state.cashGiven = Number(raw)||0;
   paintChange();
diff --git a/public/pos/sw.js b/public/pos/sw.js
index bbb48be..1927b2b 100644
--- a/public/pos/sw.js
+++ b/public/pos/sw.js
@@ -59,7 +59,8 @@
 // painted under an unchanged total. Fixed with a global `[hidden]` override
 // plus blanking the figure when the row is hidden. Also carries the dark
 // palette lift.
-const CACHE = "pos-v36";
+// v37: pos-app.js accepts a comma as the decimal point (custom item price, cash given).
+const CACHE = "pos-v37";
 const APP_SHELL = [
   './',
   './index.html',