diff --git a/BotRates.app/Contents/MacOS/BotRates b/BotRates.app/Contents/MacOS/BotRates
index 77487c8..db32bf2 100755
Binary files a/BotRates.app/Contents/MacOS/BotRates and b/BotRates.app/Contents/MacOS/BotRates differ
diff --git a/android/app/src/main/java/tw/local/botrates/MainActivity.kt b/android/app/src/main/java/tw/local/botrates/MainActivity.kt
index 431fd8f..263ad36 100644
--- a/android/app/src/main/java/tw/local/botrates/MainActivity.kt
+++ b/android/app/src/main/java/tw/local/botrates/MainActivity.kt
@@ -86,10 +86,10 @@ private fun parseAmount(s: String): Double? =
     s.filter { it != ',' && !it.isWhitespace() }.takeIf { it.isNotEmpty() }?.toDoubleOrNull()
 
 private fun roundHalfUp(v: Double): BigDecimal =
-    BigDecimal.valueOf(v).setScale(2, RoundingMode.HALF_UP)
+    BigDecimal.valueOf(v).setScale(0, RoundingMode.HALF_UP)
 
 private fun formatTwd(v: Double): String =
-    DecimalFormat("#,##0.00").format(roundHalfUp(v))
+    DecimalFormat("#,##0").format(roundHalfUp(v))
 
 private fun formatTwdRaw(v: Double): String =
     roundHalfUp(v).toPlainString()
diff --git a/bot_rates.exe b/bot_rates.exe
index f0b8c32..49113c7 100755
Binary files a/bot_rates.exe and b/bot_rates.exe differ
diff --git a/bot_rates.zip b/bot_rates.zip
index 93af785..079b6ce 100644
Binary files a/bot_rates.zip and b/bot_rates.zip differ
diff --git a/bot_rates_rs/src/main.rs b/bot_rates_rs/src/main.rs
index 88cbd33..602a68f 100644
--- a/bot_rates_rs/src/main.rs
+++ b/bot_rates_rs/src/main.rs
@@ -139,12 +139,9 @@ fn parse_amount(s: &str) -> Option<f64> {
 }
 
 fn format_twd(v: f64) -> String {
-    let rounded = (v * 100.0).round() / 100.0;
-    let sign = if rounded < 0.0 { "-" } else { "" };
-    let abs = rounded.abs();
-    let int_part = abs.trunc() as u64;
-    let frac = ((abs - int_part as f64) * 100.0).round() as u64;
-    let int_str = int_part.to_string();
+    let rounded = v.round() as i64;
+    let sign = if rounded < 0 { "-" } else { "" };
+    let int_str = rounded.unsigned_abs().to_string();
     let mut with_sep = String::new();
     for (i, ch) in int_str.chars().rev().enumerate() {
         if i > 0 && i % 3 == 0 {
@@ -153,12 +150,11 @@ fn format_twd(v: f64) -> String {
         with_sep.push(ch);
     }
     let int_sep: String = with_sep.chars().rev().collect();
-    format!("{sign}{int_sep}.{frac:02}")
+    format!("{sign}{int_sep}")
 }
 
 fn format_twd_raw(v: f64) -> String {
-    let rounded = (v * 100.0).round() / 100.0;
-    format!("{rounded:.2}")
+    format!("{}", v.round() as i64)
 }
 
 struct App {