diff --git a/README.md b/README.md
index e65315c..888513e 100644
--- a/README.md
+++ b/README.md
@@ -44,10 +44,9 @@ Currently, the following is done in terms of functionality:
 
 The desktop app (unix-ish only; developed on linux, untested on anything else, but should run on macos)
 is closer to its final form in terms of UI/UX, though it currently can only transmit. The Android
-app is about halfway done in terms of functionality, but the UI is, shall we say, "hideous":
+app is about halfway done in terms of functionality, but the UI is, shall we say, "bad":
 
-![cuttle mobile app receiving data](./mobile_receiving.png) ![cuttle mobile app done receiving
-data](./mobile_finished.png)
+![cuttle mobile app receiving data](./mobile_receiving.png)
 
 I might take a crack at making it less hideous before I start on the mobile transmitting/desktop
 receiving side of the functionality, but maybe not! I often want to transfer a file or text from my
diff --git a/mobile/justfile b/mobile/justfile
index a16d174..e31d430 100644
--- a/mobile/justfile
+++ b/mobile/justfile
@@ -5,9 +5,16 @@ gen:
     flutter_rust_bridge_codegen
 
 lint:
-    cd native && cargo fmt
     dart format .
 
+native: native-debug native-release
+
+native-release:
+    cd android && ./gradlew :app:cargoBuildRelease
+
+native-debug:
+    cd android && ./gradlew :app:cargoBuildDebug
+
 clean:
     flutter clean
     cd native && cargo clean
diff --git a/mobile/lib/main.dart b/mobile/lib/main.dart
index fb19e1a..40e51ad 100644
--- a/mobile/lib/main.dart
+++ b/mobile/lib/main.dart
@@ -1,10 +1,12 @@
 import 'dart:async';
+import 'dart:collection';
 import 'dart:io';
 import 'dart:typed_data';
 
 import 'package:camerawesome/camerawesome_plugin.dart';
 import 'package:flutter/material.dart';
 import 'package:google_mlkit_barcode_scanning/google_mlkit_barcode_scanning.dart';
+import 'package:intl/intl.dart';
 import 'package:rxdart/rxdart.dart';
 import 'ffi.dart';
 import 'utils/mlkit_utils.dart';
@@ -45,12 +47,14 @@ class _MyHomePageState extends State<MyHomePage> {
   final _barcodeScanner = BarcodeScanner(formats: [BarcodeFormat.qrCode]);
   final _rxTextController = BehaviorSubject<String>();
   late final Stream<String> _rxTextStream = _rxTextController.stream;
-  final _scrollController = ScrollController();
 
   TxConfig? _txConfig;
   var _cuttleState = CuttleState.unitialized;
-  final List<RaptorPacket> _rxData = [];
+  final HashSet<RaptorPacket> _rxData = HashSet();
   String _rxText = '';
+  int _rxCount = 1;
+
+  final _formatter = NumberFormat('###,###,###');
 
   @override
   void dispose() {
@@ -65,15 +69,14 @@ class _MyHomePageState extends State<MyHomePage> {
         onImageForAnalysis: (img) => _processImageBarcode(img),
         imageAnalysisConfig: AnalysisConfig(
           androidOptions: const AndroidAnalysisOptions.nv21(
-            width: 1024,
+            width: 600,
           ),
-          maxFramesPerSecond: 30,
+          maxFramesPerSecond: 20,
           autoStart: false,
         ),
         builder: (cameraModeState, previewSize, previewRect) {
           return _RxTextDisplayWidget(
             rxTextStream: _rxTextStream,
-            scrollController: _scrollController,
             analysisController: cameraModeState.analysisController!,
           );
         },
@@ -103,7 +106,8 @@ class _MyHomePageState extends State<MyHomePage> {
                     _txConfig!.filename ?? "large text on the command line";
 
                 final desc = _txConfig!.description;
-                final text = 'Receiving $fname, ${_txConfig!.len} bytes: $desc';
+                final text =
+                    'Receiving $fname, ${_formatter.format(_txConfig!.len)} bytes ($desc)';
                 _rxText = text;
                 _rxTextController.add(text);
                 continue;
@@ -121,25 +125,32 @@ class _MyHomePageState extends State<MyHomePage> {
           case CuttleState.receiving:
             {
               var txconf = await api.getTxConfig(bytes: dbytes);
-              if (txconf != null || barcode.rawValue != null) {
-                await api.dropTxConfig(txc: txconf!);
+              if (txconf != null) {
+                await api.dropTxConfig(txc: txconf);
                 continue;
               }
               final packet = RaptorPacket(field0: dbytes);
               _rxData.add(packet);
-              final content =
-                  await api.decodePackets(packets: _rxData, txconf: _txConfig!);
-              if (content != null) {
-                _rxData.clear();
-                _barcodeScanner.close();
-                _cuttleState = CuttleState.received;
-                _rxTextController.add("DONE RECEIVING $_rxText");
-                final f = await _saveReceivedFile(_txConfig!.filename, content);
-                _rxTextController.add("Saved content to $f");
-                continue;
+              _rxCount += 1;
+              if (_rxCount % 40 == 0) {
+                _rxCount = 1;
+                final content = await api.decodePackets(
+                    packets: _rxData.toList(), txconf: _txConfig!);
+                if (content != null) {
+                  _rxData.clear();
+                  _barcodeScanner.close();
+                  _cuttleState = CuttleState.received;
+                  _rxTextController.add("DONE RECEIVING $_rxText");
+                  final f =
+                      await _saveReceivedFile(_txConfig!.filename, content);
+                  _rxTextController.add("Saved content to $f");
+                  continue;
+                }
               }
-              _rxTextController
-                  .add("$_rxText -- ${_rxData.length} bytes so far");
+              final bytesTotal = _rxData.length * dbytes.length;
+              final pct = (100.0 * bytesTotal / _txConfig!.len).floor();
+              _rxTextController.add(
+                  "$_rxText -- $pct% received (${_formatter.format(bytesTotal)} bytes)");
             }
 
           case CuttleState.received:
@@ -164,7 +175,6 @@ class _MyHomePageState extends State<MyHomePage> {
 
 class _RxTextDisplayWidget extends StatefulWidget {
   final Stream<String> rxTextStream;
-  final ScrollController scrollController;
 
   final AnalysisController analysisController;
 
@@ -172,7 +182,6 @@ class _RxTextDisplayWidget extends StatefulWidget {
     // ignore: unused_element
     super.key,
     required this.rxTextStream,
-    required this.scrollController,
     required this.analysisController,
   });
 
@@ -186,8 +195,8 @@ class _RxTextDisplayWidgetState extends State<_RxTextDisplayWidget> {
     return Align(
       alignment: Alignment.bottomCenter,
       child: Container(
-        decoration: BoxDecoration(
-          color: Colors.tealAccent.withOpacity(0.7),
+        decoration: const BoxDecoration(
+          color: Colors.white,
         ),
         child: Column(mainAxisSize: MainAxisSize.min, children: [
           Material(
diff --git a/mobile/pubspec.yaml b/mobile/pubspec.yaml
index aae02f8..c76163a 100644
--- a/mobile/pubspec.yaml
+++ b/mobile/pubspec.yaml
@@ -45,6 +45,7 @@ dependencies:
   path_provider: ^2.1.0
   rxdart: ^0.27.7
   uuid: ^3.0.7
+  intl: ^0.18.1
 
 dev_dependencies:
   flutter_test:
diff --git a/mobile_receiving.png b/mobile_receiving.png
index c134aeb..88b019b 100644
Binary files a/mobile_receiving.png and b/mobile_receiving.png differ