diff --git a/apps/multidice/ChangeLog b/apps/multidice/ChangeLog
new file mode 100644
index 000000000..cb0cce2aa
--- /dev/null
+++ b/apps/multidice/ChangeLog
@@ -0,0 +1,32 @@
+0.90: got most of the features done, lacking some polish and real-hardware testing
+1.00: overhauled the whole app, made some margins larger to be easier to tap on
+1.01: fixed bug that caused rolled dice on the right of screen to be writ off-screen
+1.02: added vibration when dice is rolled
+1.03: vibration caused the accelerometer to never stop
+1.04: decreased vibration strength
+1.05: toggled the acceleration handler to prevent infinite buzz loop
+1.06: increased vibration again
+1.07: IDK how to use promises properly
+1.08: still trying to fix the lack of vibrations
+1.09: hopefully now it's fixed?
+1.10: not having web bluetooth to debug is a PAIN
+1.11: decreased vibration time, decreased accel requirement
+1.12: issue with app calling roll function too many times at startup
+1.13: added a delay after the buzzer stops to prevent multi-rolling
+1.14: made the delay needlessly long to see if it even does anything
+1.15: moved accel & vibration commands to the accelHandler function
+1.16: enabled button usage & temporarily disabled acceleration
+1.17: made changes to when accelHandler gets overwritten, temporarily disabled button usage
+1.18: decided to keep around the button even while testing, disabled all safety round the accelHandler self-triggering
+1.19: added longer delay before resetting accelHandler
+1.20: removed all traces of accel b/c I've given up
+1.21: added a drawWidgets command to see if I have the padding right
+1.22: ok the buzzing *might* work now
+1.23: forgot to resolve the promise
+1.24: fixed dumb errors
+1.25: god I hope this works
+1.26: trying to add timeout after it's done buzzing... again
+1.27: OH GOD IT FINALLY WORKS
+1.28: increased vibration strength, added some comments, & some QOL
+1.29: changed image
+1.30: changed image, again
diff --git a/apps/multidice/README.md b/apps/multidice/README.md
new file mode 100644
index 000000000..72a2d8af5
--- /dev/null
+++ b/apps/multidice/README.md
@@ -0,0 +1,20 @@
+# multiple dice roller
+
+roll anywhere from 1-8 dice at the same time.
+
+## Usage
+
+![startup.png](startup.png)
+On the menu screen: tap on the dice to change what variant is selected, & shake/or press BTN to roll the dice
+![single_rolled.png](single_rolled.png)
+On the dice screen: tap anywhere on the screen to go back to the menu, or shake/or press BTN to roll the dice
+
+## Features
+
+roll anywhere from 1-8 dice (d4, d6, d8, d10, d12, d20, & d percentile). You can select multiple different dice at the same time
+![many_selected.png](many_selected.png)
+![many_rolled.png](many_rolled.png)
+
+## Controls
+
+App uses touchscreen to cycle through different dice, and accelerometer/BTN to roll them
diff --git a/apps/multidice/app-icon.js b/apps/multidice/app-icon.js
new file mode 100644
index 000000000..88feb83cd
--- /dev/null
+++ b/apps/multidice/app-icon.js
@@ -0,0 +1 @@
+atob("MDABAAAAA8AAAAAAB+AAf//+DDAAwAACGBgAwAADMAwAwAADYAYAgAAAwYMAgAABg+GAgAADBiDAgDwGBiBggH4MAmAwgMMYA8AYgIEwAAAMgIFg8AeGgIHBkAyDgMNBGAjDgH5BGAjDgDxh8A+DgAAwYAMGgAAYAYAMgAAMA+AYwAAGBiAwwAADBiBgwAADgmDAf//+w8Gwf///4AM8wAADMAYEzwADGA3En4ABDBvkmYABBjIkmYABI+IkH4ABPAPkjwABHAHEgDwBAHAEAH4BAPgEgGYBAIgEgGYBAIgEgH4BAPgEgDwBAHAEgADxHAHEgAH5PgPkgAGZIgIkgAGZIgIkgAH5PgPkwADzHAHEwAADAAAEcAAPwAAcP//8///w")
diff --git a/apps/multidice/app.js b/apps/multidice/app.js
new file mode 100644
index 000000000..53f67e21e
--- /dev/null
+++ b/apps/multidice/app.js
@@ -0,0 +1,185 @@
+var menu = true; // default to have the selection menu open
+const DICE_ARRAY = [0, 4, 6, 8, 10, 12, 20, 100]; // 0 means nothing selected
+const SELECTION_ARRAY = [6, 0, 0, 0, 0, 0, 0, 0]; // default to selecting a single d20
+
+// function to draw the selection menu
+function drawMenu() {
+  
+  stringArr = new Array ("", "", "", "", "", "", "", "");
+  for (i = 0; i < 8; i++) {
+    
+    if (SELECTION_ARRAY [i] != 0) {
+      
+      stringArr [i] = "" + DICE_ARRAY [SELECTION_ARRAY [i]];
+    } else {
+      
+      stringArr [i] = " . "; // more clearly defines where the user can tap
+    }
+  }
+  
+  g.clear();
+  g.setFont ("Vector", 40);
+  
+  // "   ".slice(-3) left-pads all numbers with spaces
+  g.drawString (("   " + stringArr [0]).slice (-3), 5, 10);
+  g.drawString (("   " + stringArr [1]).slice (-3), 5, 50);
+  g.drawString (("   " + stringArr [2]).slice (-3), 5, 90);
+  g.drawString (("   " + stringArr [3]).slice (-3), 5, 130);
+  g.drawString (("   " + stringArr [4]).slice (-3), 96, 10);
+  g.drawString (("   " + stringArr [5]).slice (-3), 96, 50);
+  g.drawString (("   " + stringArr [6]).slice (-3), 96, 90);
+  g.drawString (("   " + stringArr [7]).slice (-3), 96, 130);
+}
+
+// function to change what dice is selected in the menu
+function touchHandler (button, xy) {
+  
+  if (! menu) { // if menu isn't open, open it & return
+    
+    menu = true;
+    drawMenu();
+    return;
+  }
+  
+  if (xy.x <= 87) { // left
+    
+    if (xy.y <= 43) { // first
+      
+      selection = 0;
+    } else if (xy.y <= 87) { // second
+      
+      selection = 1;
+    } else if (xy.y <= 131) { // third
+      
+      selection = 2;
+    } else { // fourth
+      
+      selection = 3;
+    }
+  } else { // right
+    
+    if (xy.y <= 43) { // first
+      
+      selection = 4;
+    } else if (xy.y <= 87) { // second
+      
+      selection = 5;
+    } else if (xy.y <= 131) { // third
+      
+      selection = 6;
+    } else { // fourth
+      
+      selection = 7;
+    }
+  }
+  
+  if (SELECTION_ARRAY [selection] == SELECTION_ARRAY.length - 1) { // if last dice is selected, go back to first
+    
+    SELECTION_ARRAY [selection] = 0;
+  } else {
+    
+    SELECTION_ARRAY [selection] += 1;
+  }
+  
+  drawMenu();
+}
+
+function accelHandler (xyz) {
+  
+  if (xyz.diff >= 0.3) {
+    
+    menu = false;
+    mutex (rollDice).catch (() => {
+      
+      return; // not necessary, but prevents spamming the logs
+    });
+  }
+}
+
+// returns a resolved promise if no other mutex call is active, all further ones return a rejected one
+let lock = false;
+function mutex (functionRef) {
+  
+  if (lock) {
+    
+    return Promise.reject (new Error ("mutex is busy"));
+  }
+  
+  lock = true;
+  return new Promise ((resolve, reject) => {
+    
+    functionRef().then ((result) => {
+      
+      lock = false;
+      resolve (result);
+    }).catch ((error) => {
+      
+      lock = false;
+      reject (error);
+    });
+  });
+}
+
+// function to roll all selected dice, and display them
+function rollDice() {
+  
+  resultsArr = new Uint8Array (8);
+  for (i = 0; i < 8; i++) {
+    
+    if (SELECTION_ARRAY [i] != 0) {
+      
+      resultsArr [i] = random (DICE_ARRAY [SELECTION_ARRAY [i]]);
+    }
+  }
+  
+  g.clear();
+  g.setFont ("Vector", 40);
+  
+  for (i = 0; i < 4; i++) {
+    
+    if (SELECTION_ARRAY [i] != 0) {
+      
+      g.drawString (("   " + resultsArr [i]).slice (-3), 5, 10 + 40 * i);
+    }
+  }
+  
+  for (i = 4; i < 8; i++) {
+    
+    if (SELECTION_ARRAY [i] != 0) {
+      
+      g.drawString (("   " + resultsArr [i]).slice (-3), 96, 10 + 40 * (i - 4));
+    }
+  }
+  
+  return vibrate();
+}
+
+// triggers the vibration, then pauses before returning
+function vibrate() {
+  
+  return new Promise ((resolve, reject) => {
+    
+    return Bangle.buzz (50, 1).then ((value) => {
+      
+      setTimeout (() => {
+        
+        resolve (value);
+      }, 200);
+    });
+  });
+}
+
+// returns a integer [1, max]
+function random (max) {
+  
+  return Math.round (Math.random() * (max - 1) + 1);
+}
+
+drawMenu();
+Bangle.on ('touch', touchHandler);
+Bangle.on ('accel', accelHandler);
+setWatch (function() {
+  
+  menu = false;
+  mutex (rollDice);
+}, BTN, {repeat: true, edge: "falling", debounce: 10});
diff --git a/apps/multidice/app.png b/apps/multidice/app.png
new file mode 100644
index 000000000..75ee0514a
Binary files /dev/null and b/apps/multidice/app.png differ
diff --git a/apps/multidice/many_rolled.png b/apps/multidice/many_rolled.png
new file mode 100644
index 000000000..4cf34e9c7
Binary files /dev/null and b/apps/multidice/many_rolled.png differ
diff --git a/apps/multidice/many_selected.png b/apps/multidice/many_selected.png
new file mode 100644
index 000000000..137e2c363
Binary files /dev/null and b/apps/multidice/many_selected.png differ
diff --git a/apps/multidice/metadata.json b/apps/multidice/metadata.json
new file mode 100644
index 000000000..304c789e4
--- /dev/null
+++ b/apps/multidice/metadata.json
@@ -0,0 +1,15 @@
+{ "id": "multidice",
+  "name": "multiple dice roller",
+  "shortName":"multidice",
+  "version":"1.30",
+  "description": "roll anywhere from 1-8 dice at the same time",
+  "icon": "app.png",
+  "tags": "tool,game",
+  "supports" : ["BANGLEJS2"],  
+  "readme": "README.md",
+  "allow_emulator": true,
+  "storage": [
+    {"name":"multidice.app.js","url":"app.js"},
+    {"name":"multidice.img","url":"app-icon.js","evaluate":true}
+  ]
+}
diff --git a/apps/multidice/single_rolled.png b/apps/multidice/single_rolled.png
new file mode 100644
index 000000000..3ce67ab74
Binary files /dev/null and b/apps/multidice/single_rolled.png differ
diff --git a/apps/multidice/startup.png b/apps/multidice/startup.png
new file mode 100644
index 000000000..587281e5c
Binary files /dev/null and b/apps/multidice/startup.png differ
diff --git a/core b/core
index 0d02ff376..893c2dbbe 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 0d02ff3763783d166ff84906af038420736aabfc
+Subproject commit 893c2dbbe5a93fbb80d035a695663b4f4cca8875