diff --git a/src/app/tools/session/page.tsx b/src/app/tools/session/page.tsx
index e698fbbeb..80bb32579 100644
--- a/src/app/tools/session/page.tsx
+++ b/src/app/tools/session/page.tsx
@@ -8,7 +8,7 @@ import { Button } from '../../../components/Button';
 import PageWrapper from '../../../components/PageWrapper';
 import { SearchBar } from '../../../components/SearchBar';
 import { TreeTypeEnum } from '../../../components/Tanks';
-import { REGION_NAMES } from '../../../constants/regions';
+import { REGION_NAMES, Region } from '../../../constants/regions';
 import { WARGAMING_APPLICATION_ID } from '../../../constants/wargamingApplicationID';
 import calculateWN8 from '../../../core/blitz/calculateWN8';
 import { diffNormalizedTankStats } from '../../../core/blitz/diffNormalizedTankStats';
@@ -28,6 +28,9 @@ import {
 } from '../../../types/tanksStats';
 import * as styles from './page.css';
 
+// 1 once per 5 seconds
+const REFRESH_RATE = 1 / 5;
+
 export default function Page() {
   const input = useRef<HTMLInputElement>(null);
   const [searchResults, setSearchResults] = useState<
@@ -45,63 +48,90 @@ export default function Page() {
     500,
   );
   const session = useSession();
+  const tankStatsArray = session.isTracking
+    ? (Object.values(session.tankStats) as IndividualTankStats[])
+    : [];
+  const since = session.isTracking ? new Date(session.time) : undefined;
   const [diff, setDiff] = useState<
     | {
-        stats: IndividualTankStats;
-        tankopedia?: TankopediaEntry;
-        career: IndividualTankStats;
-        currentWN8?: number;
-        careerWN8?: number;
-      }[]
+        careerWN8: number;
+
+        list: {
+          stats: IndividualTankStats;
+          tankopedia?: TankopediaEntry;
+          career: IndividualTankStats;
+          currentWN8?: number;
+          careerWN8?: number;
+        }[];
+      }
     | undefined
   >(undefined);
 
-  useEffect(() => {
-    (async () => {
-      if (session.isTracking) {
-        const { id, region } = session;
-        const careerRaw = await getWargamingResponse<TanksStats>(
-          `https://api.wotblitz.${region}/wotb/tanks/stats/?application_id=${WARGAMING_APPLICATION_ID}&account_id=${id}`,
+  async function recalculateDiff() {
+    if (session.isTracking) {
+      const { id, region } = session;
+      const careerRaw = await getWargamingResponse<TanksStats>(
+        `https://api.wotblitz.${region}/wotb/tanks/stats/?application_id=${WARGAMING_APPLICATION_ID}&account_id=${id}`,
+      );
+      const career = careerRaw[id].reduce<Record<number, IndividualTankStats>>(
+        (accumulator, curr) => ({
+          ...accumulator,
+          [curr.tank_id]: curr,
+        }),
+        {},
+      );
+      const awaitedTankopedia = await tankopedia;
+      const awaitedTankAverages = await tankAverages;
+      const careerWN8 =
+        careerRaw[id].reduce(
+          (accumulator, { tank_id, all }) =>
+            accumulator +
+            (awaitedTankAverages[tank_id] && all.battles > 0
+              ? all.battles *
+                calculateWN8(awaitedTankAverages[tank_id].all, all)
+              : 0),
+          0,
+        ) /
+        careerRaw[id].reduce(
+          (accumulator, { tank_id, all }) =>
+            accumulator +
+            (awaitedTankAverages[tank_id] && all.battles > 0 ? all.battles : 0),
+          0,
         );
-        const career = careerRaw[id].reduce<
-          Record<number, IndividualTankStats>
-        >(
-          (accumulator, curr) => ({
-            ...accumulator,
-            [curr.tank_id]: curr,
-          }),
-          {},
-        );
-        const awaitedTankopedia = await tankopedia;
-        const awaitedTankAverages = await tankAverages;
 
-        setDiff(
-          (
-            Object.values(
-              diffNormalizedTankStats(session.tankStats, career),
-            ) as IndividualTankStats[]
-          ).map((stats) => {
-            return {
-              stats,
-              tankopedia: awaitedTankopedia[stats.tank_id],
-              career: career[stats.tank_id],
-              currentWN8: awaitedTankAverages[stats.tank_id]
-                ? calculateWN8(
-                    awaitedTankAverages[stats.tank_id].all,
-                    stats.all,
-                  )
-                : undefined,
-              careerWN8: awaitedTankAverages[stats.tank_id]
-                ? calculateWN8(
-                    awaitedTankAverages[stats.tank_id].all,
-                    career[stats.tank_id].all,
-                  )
-                : undefined,
-            };
-          }),
-        );
-      }
-    })();
+      setDiff({
+        careerWN8,
+
+        list: (
+          Object.values(
+            diffNormalizedTankStats(session.tankStats, career),
+          ) as IndividualTankStats[]
+        ).map((stats) => {
+          return {
+            stats,
+            tankopedia: awaitedTankopedia[stats.tank_id],
+            career: career[stats.tank_id],
+            currentWN8: awaitedTankAverages[stats.tank_id]
+              ? calculateWN8(awaitedTankAverages[stats.tank_id].all, stats.all)
+              : undefined,
+            careerWN8: awaitedTankAverages[stats.tank_id]
+              ? calculateWN8(
+                  awaitedTankAverages[stats.tank_id].all,
+                  career[stats.tank_id].all,
+                )
+              : undefined,
+          };
+        }),
+      });
+    }
+  }
+  async function setSession(region: Region, id: number, nickname: string) {}
+
+  useEffect(() => {
+    recalculateDiff();
+    const interval = setInterval(recalculateDiff, 1000 / REFRESH_RATE);
+
+    return () => clearInterval(interval);
   }, []);
 
   return (
@@ -135,7 +165,6 @@ export default function Page() {
                 marginTop: 8,
                 flexDirection: 'column',
                 backgroundColor: theme.colors.componentNonInteractive,
-                border: theme.borderStyles.nonInteractive,
                 borderRadius: 4,
                 padding: 8,
                 boxSizing: 'border-box',
@@ -244,69 +273,171 @@ export default function Page() {
       </div>
 
       <Breakdown.Root>
-        {diff &&
-          diff
-            .sort((a, b) => b.stats.last_battle_time - a.stats.last_battle_time)
-            .map(({ stats, tankopedia, career, careerWN8, currentWN8 }) => (
-              <Breakdown.Row
-                key={stats.tank_id}
-                title={tankopedia?.name ?? `Unknown tank ${stats.tank_id}`}
-                type="tank"
-                tankType={tankopedia?.type}
-                treeType={(() => {
-                  if (tankopedia?.is_collectible) return TreeTypeEnum.Collector;
-                  if (tankopedia?.is_premium) return TreeTypeEnum.Premium;
-                })()}
-                rows={[
-                  {
-                    title: 'Battles',
-                    current: stats.all.battles.toLocaleString(),
-                    career: career.all.battles.toLocaleString(),
-                  },
-                  {
-                    title: 'Winrate',
-                    current: `${(
-                      100 *
-                      (stats.all.wins / stats.all.battles)
-                    ).toFixed(2)}%`,
-                    career: `${(
-                      100 *
-                      (career.all.wins / career.all.battles)
-                    ).toFixed(2)}%`,
-                    delta:
-                      stats.all.wins / stats.all.battles -
-                      career.all.wins / career.all.battles,
-                  },
-                  {
-                    title: 'WN8',
-                    current:
-                      currentWN8 === undefined
-                        ? undefined
-                        : Math.round(currentWN8).toLocaleString(),
-                    career:
-                      careerWN8 === undefined
-                        ? undefined
-                        : Math.round(careerWN8).toLocaleString(),
-                    percentile:
-                      currentWN8 === undefined
-                        ? undefined
-                        : getWN8Percentile(currentWN8),
-                  },
-                  {
-                    title: 'Damage',
-                    current: Math.round(
-                      stats.all.damage_dealt / stats.all.battles,
-                    ).toLocaleString(),
-                    career: Math.round(
-                      career.all.damage_dealt / career.all.battles,
-                    ).toLocaleString(),
-                    delta:
-                      stats.all.damage_dealt / stats.all.battles -
-                      career.all.damage_dealt / career.all.battles,
-                  },
-                ]}
-              />
-            ))}
+        {session.isTracking && since !== undefined && diff !== undefined && (
+          <Breakdown.Row
+            title={`Since ${since.toLocaleString(undefined, {
+              hour: 'numeric',
+              minute: 'numeric',
+              hour12: true,
+              month: 'short',
+              year: 'numeric',
+              day: 'numeric',
+            })}`}
+            stats={[
+              {
+                title: 'Battles',
+                current: diff.list
+                  .reduce(
+                    (accumulator, { stats }) => accumulator + stats.all.battles,
+                    0,
+                  )
+                  .toLocaleString(),
+                career: tankStatsArray
+                  .reduce(
+                    (accumulator, stats) => accumulator + stats.all.battles,
+                    0,
+                  )
+                  .toLocaleString(),
+              },
+              {
+                title: 'Winrate',
+                current: `${(
+                  100 *
+                  (diff.list.reduce(
+                    (accumulator, { stats }) => accumulator + stats.all.wins,
+                    0,
+                  ) /
+                    diff.list.reduce(
+                      (accumulator, { stats }) =>
+                        accumulator + stats.all.battles,
+                      0,
+                    ))
+                ).toFixed(2)}%`,
+                career: `${(
+                  100 *
+                  (tankStatsArray.reduce(
+                    (accumulator, stats) => accumulator + stats.all.wins,
+                    0,
+                  ) /
+                    tankStatsArray.reduce(
+                      (accumulator, stats) => accumulator + stats.all.battles,
+                      0,
+                    ))
+                ).toFixed(2)}%`,
+              },
+              (() => {
+                const currentWN8 =
+                  diff.list.reduce(
+                    (accumulator, { currentWN8, stats }) =>
+                      stats.all.battles * (currentWN8 ?? 0) + accumulator,
+                    0,
+                  ) /
+                  diff.list.reduce(
+                    (accumulator, { currentWN8, stats }) =>
+                      (currentWN8 === undefined ? 0 : stats.all.battles) +
+                      accumulator,
+                    0,
+                  );
+
+                return {
+                  title: 'WN8',
+                  current: Math.round(currentWN8).toLocaleString(),
+                  percentile: getWN8Percentile(currentWN8),
+                  career: Math.round(diff.careerWN8).toLocaleString(),
+                };
+              })(),
+              {
+                title: 'Damage',
+                current: Math.round(
+                  diff.list.reduce(
+                    (accumulator, { stats }) =>
+                      accumulator + stats.all.damage_dealt,
+                    0,
+                  ) /
+                    diff.list.reduce(
+                      (accumulator, { stats }) =>
+                        accumulator + stats.all.battles,
+                      0,
+                    ),
+                ).toLocaleString(),
+                career: Math.round(
+                  tankStatsArray.reduce(
+                    (accumulator, stats) =>
+                      accumulator + stats.all.damage_dealt,
+                    0,
+                  ) /
+                    tankStatsArray.reduce(
+                      (accumulator, stats) => accumulator + stats.all.battles,
+                      0,
+                    ),
+                ).toLocaleString(),
+              },
+            ]}
+          />
+        )}
+
+        {diff?.list
+          .sort((a, b) => b.stats.last_battle_time - a.stats.last_battle_time)
+          .map(({ stats, tankopedia, career, careerWN8, currentWN8 }) => (
+            <Breakdown.Row
+              key={stats.tank_id}
+              title={tankopedia?.name ?? `Unknown tank ${stats.tank_id}`}
+              type="tank"
+              tankType={tankopedia?.type}
+              treeType={(() => {
+                if (tankopedia?.is_collectible) return TreeTypeEnum.Collector;
+                if (tankopedia?.is_premium) return TreeTypeEnum.Premium;
+              })()}
+              stats={[
+                {
+                  title: 'Battles',
+                  current: stats.all.battles.toLocaleString(),
+                  career: career.all.battles.toLocaleString(),
+                },
+                {
+                  title: 'Winrate',
+                  current: `${(
+                    100 *
+                    (stats.all.wins / stats.all.battles)
+                  ).toFixed(2)}%`,
+                  career: `${(
+                    100 *
+                    (career.all.wins / career.all.battles)
+                  ).toFixed(2)}%`,
+                  delta:
+                    stats.all.wins / stats.all.battles -
+                    career.all.wins / career.all.battles,
+                },
+                {
+                  title: 'WN8',
+                  current:
+                    currentWN8 === undefined
+                      ? undefined
+                      : Math.round(currentWN8).toLocaleString(),
+                  career:
+                    careerWN8 === undefined
+                      ? undefined
+                      : Math.round(careerWN8).toLocaleString(),
+                  percentile:
+                    currentWN8 === undefined
+                      ? undefined
+                      : getWN8Percentile(currentWN8),
+                },
+                {
+                  title: 'Damage',
+                  current: Math.round(
+                    stats.all.damage_dealt / stats.all.battles,
+                  ).toLocaleString(),
+                  career: Math.round(
+                    career.all.damage_dealt / career.all.battles,
+                  ).toLocaleString(),
+                  delta:
+                    stats.all.damage_dealt / stats.all.battles -
+                    career.all.damage_dealt / career.all.battles,
+                },
+              ]}
+            />
+          ))}
       </Breakdown.Root>
     </PageWrapper>
   );
diff --git a/src/components/Breakdown/components/Row.tsx b/src/components/Breakdown/components/Row.tsx
index 0ee489c51..5acd25cf8 100644
--- a/src/components/Breakdown/components/Row.tsx
+++ b/src/components/Breakdown/components/Row.tsx
@@ -5,13 +5,13 @@ import { TREE_TYPE_ICONS, TreeTypeEnum } from '../../Tanks';
 import { RowStat } from './RowStat';
 
 interface RowProps {
-  type: 'tank' | 'summary';
+  type?: 'tank' | 'summary';
   title: string;
   minimized?: boolean;
   treeType?: TreeTypeEnum;
   tankType?: TankType;
 
-  rows: {
+  stats: {
     title: string;
     current?: number | string;
     career?: number | string;
@@ -77,7 +77,7 @@ export function Row(props: RowProps) {
           paddingBottom: 8,
         }}
       >
-        {props.rows.map((row, index) => (
+        {props.stats.map((row, index) => (
           <RowStat
             minimized={props.minimized}
             key={index}
diff --git a/src/components/Button.tsx b/src/components/Button.tsx
index 8b78fb276..29fcaa5f6 100644
--- a/src/components/Button.tsx
+++ b/src/components/Button.tsx
@@ -23,7 +23,7 @@ export function Button({ color, style, ...props }: ButtonProps) {
         backgroundColor:
           theme.colors[`componentInteractive${BUTTON_COLORS[color]}`],
         borderRadius: 4,
-        border: theme.borderStyles[`interactive${BUTTON_COLORS[color]}`],
+        border: 'none',
         cursor: 'pointer',
         padding: 8,
         display: 'flex',
diff --git a/src/components/SearchBar.tsx b/src/components/SearchBar.tsx
index 28899f41b..a1a19fcdf 100644
--- a/src/components/SearchBar.tsx
+++ b/src/components/SearchBar.tsx
@@ -14,7 +14,6 @@ export const SearchBar = forwardRef<HTMLInputElement, ComponentProps<'input'>>(
           display: 'flex',
           padding: 8,
           borderRadius: 4,
-          border: theme.borderStyles.interactive,
           backgroundColor: theme.colors.componentInteractive,
           color: theme.colors.textLowContrast,
           fontSize: 16,
diff --git a/src/renderers/today.tsx b/src/renderers/today.tsx
index 0922c3db0..ff0c40bc6 100644
--- a/src/renderers/today.tsx
+++ b/src/renderers/today.tsx
@@ -138,7 +138,7 @@ export default async function today(
           treeType={tankopediaEntry ? await getTreeType(id) : undefined}
           title={showTotal && id === 0 ? 'Total' : await resolveTankName(id)}
           minimized={showTotal ? index > maximized : index + 1 > maximized}
-          rows={[
+          stats={[
             {
               title: 'Battles',
               current: tankStats.battles.toLocaleString(),
diff --git a/src/stores/session.ts b/src/stores/session.ts
index b7b8343c9..aeeb82ac5 100644
--- a/src/stores/session.ts
+++ b/src/stores/session.ts
@@ -14,6 +14,7 @@ type Session =
       id: number;
       nickname: string;
       tankStats: NormalizedTankStats;
+      time: number;
     };
 
 export const useSession = create<Session>()(