diff --git a/EditSet.tsx b/EditSet.tsx
index 30f14ee..73aa6f4 100644
--- a/EditSet.tsx
+++ b/EditSet.tsx
@@ -1,84 +1,85 @@
-import { DateTimePickerAndroid } from '@react-native-community/datetimepicker'
+import { DateTimePickerAndroid } from "@react-native-community/datetimepicker";
 import {
   RouteProp,
   useFocusEffect,
   useNavigation,
   useRoute,
-} from '@react-navigation/native'
-import { format } from 'date-fns'
-import { useCallback, useRef, useState } from 'react'
-import { NativeModules, TextInput, View } from 'react-native'
-import DocumentPicker from 'react-native-document-picker'
-import { Button, Card, TouchableRipple } from 'react-native-paper'
-import AppInput from './AppInput'
-import ConfirmDialog from './ConfirmDialog'
-import { MARGIN, PADDING } from './constants'
-import { getNow, setRepo, settingsRepo } from './db'
-import GymSet from './gym-set'
-import { HomePageParams } from './home-page-params'
-import Settings from './settings'
-import StackHeader from './StackHeader'
-import { toast } from './toast'
+} from "@react-navigation/native";
+import { format } from "date-fns";
+import { useCallback, useRef, useState } from "react";
+import { NativeModules, TextInput, View } from "react-native";
+import DocumentPicker from "react-native-document-picker";
+import { Button, Card, TouchableRipple } from "react-native-paper";
+import AppInput from "./AppInput";
+import ConfirmDialog from "./ConfirmDialog";
+import { MARGIN, PADDING } from "./constants";
+import { getNow, setRepo, settingsRepo } from "./db";
+import GymSet from "./gym-set";
+import { HomePageParams } from "./home-page-params";
+import Settings from "./settings";
+import StackHeader from "./StackHeader";
+import { toast } from "./toast";
+import { fixNumeric } from "./fix-numeric";
 
 export default function EditSet() {
-  const { params } = useRoute<RouteProp<HomePageParams, 'EditSet'>>()
-  const { set } = params
-  const navigation = useNavigation()
-  const [settings, setSettings] = useState<Settings>({} as Settings)
-  const [name, setName] = useState(set.name)
-  const [reps, setReps] = useState(set.reps?.toString())
-  const [weight, setWeight] = useState(set.weight?.toString())
-  const [newImage, setNewImage] = useState(set.image)
-  const [unit, setUnit] = useState(set.unit)
+  const { params } = useRoute<RouteProp<HomePageParams, "EditSet">>();
+  const { set } = params;
+  const navigation = useNavigation();
+  const [settings, setSettings] = useState<Settings>({} as Settings);
+  const [name, setName] = useState(set.name);
+  const [reps, setReps] = useState(set.reps?.toString());
+  const [weight, setWeight] = useState(set.weight?.toString());
+  const [newImage, setNewImage] = useState(set.image);
+  const [unit, setUnit] = useState(set.unit);
   const [created, setCreated] = useState<Date>(
-    set.created ? new Date(set.created) : new Date(),
-  )
-  const [createdDirty, setCreatedDirty] = useState(false)
-  const [showRemove, setShowRemove] = useState(false)
-  const [removeImage, setRemoveImage] = useState(false)
-  const weightRef = useRef<TextInput>(null)
-  const repsRef = useRef<TextInput>(null)
-  const unitRef = useRef<TextInput>(null)
+    set.created ? new Date(set.created) : new Date()
+  );
+  const [createdDirty, setCreatedDirty] = useState(false);
+  const [showRemove, setShowRemove] = useState(false);
+  const [removeImage, setRemoveImage] = useState(false);
+  const weightRef = useRef<TextInput>(null);
+  const repsRef = useRef<TextInput>(null);
+  const unitRef = useRef<TextInput>(null);
 
   const [selection, setSelection] = useState({
     start: 0,
     end: set.reps?.toString().length,
-  })
+  });
 
   useFocusEffect(
     useCallback(() => {
-      settingsRepo.findOne({ where: {} }).then(setSettings)
-    }, []),
-  )
+      settingsRepo.findOne({ where: {} }).then(setSettings);
+    }, [])
+  );
 
   const startTimer = useCallback(
     async (value: string) => {
-      if (!settings.alarm) return
-      const first = await setRepo.findOne({ where: { name: value } })
-      const milliseconds = (first?.minutes ?? 3) * 60 * 1000 +
-        (first?.seconds ?? 0) * 1000
-      if (milliseconds) NativeModules.AlarmModule.timer(milliseconds)
+      if (!settings.alarm) return;
+      const first = await setRepo.findOne({ where: { name: value } });
+      const milliseconds =
+        (first?.minutes ?? 3) * 60 * 1000 + (first?.seconds ?? 0) * 1000;
+      if (milliseconds) NativeModules.AlarmModule.timer(milliseconds);
     },
-    [settings],
-  )
+    [settings]
+  );
 
   const added = useCallback(
     async (value: GymSet) => {
-      startTimer(value.name)
-      console.log(`${EditSet.name}.add`, { set: value })
-      if (!settings.notify) return
+      startTimer(value.name);
+      console.log(`${EditSet.name}.add`, { set: value });
+      if (!settings.notify) return;
       if (
         value.weight > set.weight ||
         (value.reps > set.reps && value.weight === set.weight)
       ) {
-        toast('Great work King! That\'s a new record.')
+        toast("Great work King! That's a new record.");
       }
     },
-    [startTimer, set, settings],
-  )
+    [startTimer, set, settings]
+  );
 
   const handleSubmit = async () => {
-    if (!name) return
+    if (!name) return;
 
     const newSet: Partial<GymSet> = {
       id: set.id,
@@ -90,63 +91,63 @@ export default function EditSet() {
       seconds: Number(set.seconds ?? 30),
       sets: set.sets ?? 3,
       hidden: false,
-    }
+    };
 
-    newSet.image = newImage
+    newSet.image = newImage;
     if (!newImage && !removeImage) {
-      newSet.image = await setRepo.findOne({ where: { name } }).then((s) =>
-        s?.image
-      )
+      newSet.image = await setRepo
+        .findOne({ where: { name } })
+        .then((s) => s?.image);
     }
 
-    if (createdDirty) newSet.created = created.toISOString()
-    if (typeof set.id !== 'number') newSet.created = await getNow()
+    if (createdDirty) newSet.created = created.toISOString();
+    if (typeof set.id !== "number") newSet.created = await getNow();
 
-    const saved = await setRepo.save(newSet)
-    if (typeof set.id !== 'number') added(saved)
-    navigation.goBack()
-  }
+    const saved = await setRepo.save(newSet);
+    if (typeof set.id !== "number") added(saved);
+    navigation.goBack();
+  };
 
   const changeImage = useCallback(async () => {
     const { fileCopyUri } = await DocumentPicker.pickSingle({
       type: DocumentPicker.types.images,
-      copyTo: 'documentDirectory',
-    })
-    if (fileCopyUri) setNewImage(fileCopyUri)
-  }, [])
+      copyTo: "documentDirectory",
+    });
+    if (fileCopyUri) setNewImage(fileCopyUri);
+  }, []);
 
   const handleRemove = useCallback(async () => {
-    setNewImage('')
-    setRemoveImage(true)
-    setShowRemove(false)
-  }, [])
+    setNewImage("");
+    setRemoveImage(true);
+    setShowRemove(false);
+  }, []);
 
   const pickDate = useCallback(() => {
     DateTimePickerAndroid.open({
       value: created,
       onChange: (_, date) => {
-        if (date === created) return
-        setCreated(date)
-        setCreatedDirty(true)
+        if (date === created) return;
+        setCreated(date);
+        setCreatedDirty(true);
         DateTimePickerAndroid.open({
           value: date,
           onChange: (__, time) => setCreated(time),
-          mode: 'time',
-        })
+          mode: "time",
+        });
       },
-      mode: 'date',
-    })
-  }, [created])
+      mode: "date",
+    });
+  }, [created]);
 
   return (
     <>
       <StackHeader
-        title={typeof set.id === 'number' ? 'Edit set' : 'Add set'}
+        title={typeof set.id === "number" ? "Edit set" : "Add set"}
       />
 
       <View style={{ padding: PADDING, flex: 1 }}>
         <AppInput
-          label='Name'
+          label="Name"
           value={name}
           onChangeText={setName}
           autoCorrect={false}
@@ -155,10 +156,14 @@ export default function EditSet() {
         />
 
         <AppInput
-          label='Reps'
-          keyboardType='numeric'
+          label="Reps"
+          keyboardType="numeric"
           value={reps}
-          onChangeText={setReps}
+          onChangeText={(newReps) => {
+            const fixed = fixNumeric(newReps);
+            setReps(fixed);
+            if (fixed.length !== newReps.length) toast("Reps must be a number");
+          }}
           onSubmitEditing={() => weightRef.current?.focus()}
           selection={selection}
           onSelectionChange={(e) => setSelection(e.nativeEvent.selection)}
@@ -166,18 +171,23 @@ export default function EditSet() {
         />
 
         <AppInput
-          label='Weight'
-          keyboardType='numeric'
+          label="Weight"
+          keyboardType="numeric"
           value={weight}
-          onChangeText={setWeight}
+          onChangeText={(newWeight) => {
+            const fixed = fixNumeric(newWeight);
+            setWeight(fixed);
+            if (fixed.length !== newWeight.length)
+              toast("Weight must be a number");
+          }}
           onSubmitEditing={handleSubmit}
           innerRef={weightRef}
         />
 
         {settings.showUnit && (
           <AppInput
-            autoCapitalize='none'
-            label='Unit'
+            autoCapitalize="none"
+            label="Unit"
             value={unit}
             onChangeText={setUnit}
             innerRef={unitRef}
@@ -186,8 +196,8 @@ export default function EditSet() {
 
         {settings.showDate && (
           <AppInput
-            label='Created'
-            value={format(created, settings.date || 'P')}
+            label="Created"
+            value={format(created, settings.date || "P")}
             onPressOut={pickDate}
           />
         )}
@@ -206,7 +216,7 @@ export default function EditSet() {
           <Button
             style={{ marginBottom: MARGIN }}
             onPress={changeImage}
-            icon='add-photo-alternate'
+            icon="add-photo-alternate"
           >
             Image
           </Button>
@@ -215,8 +225,8 @@ export default function EditSet() {
 
       <Button
         disabled={!name}
-        mode='outlined'
-        icon='save'
+        mode="outlined"
+        icon="save"
         style={{ margin: MARGIN }}
         onPress={handleSubmit}
       >
@@ -224,7 +234,7 @@ export default function EditSet() {
       </Button>
 
       <ConfirmDialog
-        title='Remove image'
+        title="Remove image"
         onOk={handleRemove}
         show={showRemove}
         setShow={setShowRemove}
@@ -232,5 +242,5 @@ export default function EditSet() {
         Are you sure you want to remove the image?
       </ConfirmDialog>
     </>
-  )
+  );
 }
diff --git a/fix-numeric.ts b/fix-numeric.ts
new file mode 100644
index 0000000..c02a97b
--- /dev/null
+++ b/fix-numeric.ts
@@ -0,0 +1,11 @@
+export const fixNumeric = (text: string) => {
+  let newText = text.replace(/[^0-9.-]/g, "");
+  let parts = newText.split(".");
+  if (parts.length > 2) {
+    newText = parts[0] + "." + parts.slice(1).join("");
+  }
+  if (newText.startsWith("-")) {
+    newText = "-" + newText.slice(1).replace(/-/g, "");
+  }
+  return newText;
+};