diff --git a/frontend/src/tools/devtools.jsx b/frontend/src/tools/devtools.jsx
index dbd299d..d99c32c 100644
--- a/frontend/src/tools/devtools.jsx
+++ b/frontend/src/tools/devtools.jsx
@@ -1424,8 +1424,9 @@ const RULE_TYPES = [
   { id:'alnum_n',      label:'Genau N Alphanumerisch',fields:['count'],           hint:'8' },
   { id:'minlength',    label:'Mindestlänge',          fields:['count'],           hint:'5' },
   { id:'maxlength',    label:'Höchstlänge',           fields:['count'],           hint:'20' },
-  { id:'numrange',     label:'Zahlenbereich (enthält)',  fields:['min','max'],       hint:'' },
-  { id:'numrange_exact',label:'Zahlenbereich (exakt)',   fields:['min','max'],       hint:'' },
+  { id:'numrange',      label:'Zahlenbereich (enthält)',      fields:['min','max'], hint:'' },
+  { id:'numrange_not',  label:'Zahlenbereich (enthält nicht)',fields:['min','max'], hint:'' },
+  { id:'numrange_exact',label:'Zahlenbereich (exakt)',        fields:['min','max'], hint:'' },
   { id:'onlynums',     label:'Nur Zahlen',            fields:[],                  hint:'' },
   { id:'onlyletters',  label:'Nur Buchstaben',        fields:[],                  hint:'' },
   { id:'onlyalnum',    label:'Nur Alphanumerisch',    fields:[],                  hint:'' },
@@ -1461,8 +1462,9 @@ function ruleToRegex(rule) {
     case 'alnum_n':      return { pat: `[a-zA-Z0-9]{${f.count||1}}`,                 desc: `genau ${f.count||1} alphanumerische Zeichen` };
     case 'minlength':    return { pat: `.{${f.count||1},}`,                          desc: `mindestens ${f.count||1} Zeichen lang` };
     case 'maxlength':    return { pat: `.{0,${f.count||999}}`,                       desc: `höchstens ${f.count||999} Zeichen lang` };
-    case 'numrange':       return { pat: `(?:${buildNumRange(Number(f.min||0), Number(f.max||9))})`, desc: `enthält eine Zahl zwischen ${f.min||0} und ${f.max||9}` };
-    case 'numrange_exact': return { pat: `^(?:${buildNumRange(Number(f.min||0), Number(f.max||9))})$`, desc: `ist exakt eine Zahl zwischen ${f.min||0} und ${f.max||9}` };
+    case 'numrange':       return { pat: `(?:${buildNumRange(Number(f.min||0), Number(f.max||9))})`,           desc: `enthält eine Zahl zwischen ${f.min||0} und ${f.max||9}` };
+    case 'numrange_not':   return { pat: `^(?!.*(?:${buildNumRange(Number(f.min||0), Number(f.max||9))})).*$`, desc: `enthält KEINE Zahl zwischen ${f.min||0} und ${f.max||9}` };
+    case 'numrange_exact': return { pat: `^(?:${buildNumRange(Number(f.min||0), Number(f.max||9))})$`,         desc: `ist exakt eine Zahl zwischen ${f.min||0} und ${f.max||9}` };
     case 'onlynums':     return { pat: `^\\d+$`,                                     desc: `nur Ziffern (0–9)` };
     case 'onlyletters':  return { pat: `^[a-zA-ZäöüÄÖÜß]+$`,                        desc: `nur Buchstaben` };
     case 'onlyalnum':    return { pat: `^[a-zA-Z0-9]+$`,                             desc: `nur Buchstaben und Ziffern` };
@@ -1697,6 +1699,7 @@ function RegexBuilder({ toast, mobile }) {
   // ── Build mode ──
   const [rules, setRules] = useState([]);
   const [testVal, setTestVal] = useState('');
+  const [testExact, setTestExact] = useState(true);
   const [copied, setCopied] = useState(false);
 
   function addRule() {
@@ -1728,7 +1731,8 @@ function RegexBuilder({ toast, mobile }) {
   let testResult = null;
   if (regex && testVal !== '') {
     try {
-      testResult = new RegExp(regex).test(testVal);
+      const pat = testExact ? `^(?:${regex})$` : regex;
+      testResult = new RegExp(pat).test(testVal);
     } catch(e) { testResult = null; }
   }
 
@@ -1741,13 +1745,18 @@ function RegexBuilder({ toast, mobile }) {
   // ── Explain mode ──
   const [explainInput, setExplainInput] = useState('');
   const [explainTestVal, setExplainTestVal] = useState('');
+  const [explainExact, setExplainExact] = useState(false);
   const explained = explainInput ? explainRegex(explainInput) : [];
   let explainTestResult = null;
   if (explainInput && explainTestVal !== '') {
-    try { explainTestResult = new RegExp(explainInput).test(explainTestVal); } catch {}
+    try {
+      const pat = explainExact ? `^(?:${explainInput})$` : explainInput;
+      explainTestResult = new RegExp(pat).test(explainTestVal);
+    } catch {}
   }
 
   const inp = {...S.inp, fontSize:13, padding:'7px 9px', boxSizing:'border-box'};
+  const lbl = {color:'rgba(255,255,255,0.55)', fontFamily:'monospace', fontSize:10, marginBottom:3};
   return (
     <div>
       {/* Mode tabs */}
@@ -1801,11 +1810,19 @@ function RegexBuilder({ toast, mobile }) {
               {/* Test-Bereich */}
               <div style={{borderRadius:9,background:'rgba(255,255,255,0.03)',
                 border:'1px solid rgba(255,255,255,0.08)',padding:'12px 14px'}}>
-                <div style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10,marginBottom:8}}>TESTEN</div>
+                <div style={{display:'flex',alignItems:'center',gap:12,marginBottom:8,flexWrap:'wrap'}}>
+                  <span style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10}}>TESTEN</span>
+                  <label style={{display:'flex',alignItems:'center',gap:6,cursor:'pointer'}}>
+                    <input type="checkbox" checked={testExact} onChange={e=>setTestExact(e.target.checked)}/>
+                    <span style={{color:'rgba(255,255,255,0.5)',fontFamily:'monospace',fontSize:10}}>
+                      Exakt (^…$) — ganzer Text muss passen
+                    </span>
+                  </label>
+                </div>
                 <div style={{display:'flex',gap:10,alignItems:'center',flexWrap:'wrap'}}>
                   <input style={{...inp,flex:1,minWidth:160}} placeholder="Testwert eingeben…"
                     value={testVal} onChange={e=>setTestVal(e.target.value)}/>
-                  {testResult===true && <span style={{color:'#4ecdc4',fontFamily:'monospace',fontSize:14,fontWeight:700}}>✓ Treffer</span>}
+                  {testResult===true  && <span style={{color:'#4ecdc4',fontFamily:'monospace',fontSize:14,fontWeight:700}}>✓ Treffer</span>}
                   {testResult===false && <span style={{color:'#ff6b9d',fontFamily:'monospace',fontSize:14,fontWeight:700}}>✗ Kein Treffer</span>}
                 </div>
               </div>
@@ -1848,7 +1865,15 @@ function RegexBuilder({ toast, mobile }) {
               {/* Test */}
               <div style={{borderRadius:9,background:'rgba(255,255,255,0.03)',
                 border:'1px solid rgba(255,255,255,0.08)',padding:'12px 14px'}}>
-                <div style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10,marginBottom:8}}>TESTEN</div>
+                <div style={{display:'flex',alignItems:'center',gap:12,marginBottom:8,flexWrap:'wrap'}}>
+                  <span style={{color:'rgba(255,255,255,0.45)',fontFamily:'monospace',fontSize:10}}>TESTEN</span>
+                  <label style={{display:'flex',alignItems:'center',gap:6,cursor:'pointer'}}>
+                    <input type="checkbox" checked={explainExact} onChange={e=>setExplainExact(e.target.checked)}/>
+                    <span style={{color:'rgba(255,255,255,0.5)',fontFamily:'monospace',fontSize:10}}>
+                      Exakt (^…$)
+                    </span>
+                  </label>
+                </div>
                 <div style={{display:'flex',gap:10,alignItems:'center',flexWrap:'wrap'}}>
                   <input style={{...inp,flex:1,minWidth:160}} placeholder="Testwert eingeben…"
                     value={explainTestVal} onChange={e=>setExplainTestVal(e.target.value)}/>