diff --git a/src/ageAssurance/components/NoAccessScreen.tsx b/src/ageAssurance/components/NoAccessScreen.tsx
index d55fa5846f..70284dbc73 100644
--- a/src/ageAssurance/components/NoAccessScreen.tsx
+++ b/src/ageAssurance/components/NoAccessScreen.tsx
@@ -8,7 +8,7 @@ import {dateDiff, useGetTimeAgo} from '#/lib/hooks/useTimeAgo'
 import {logger} from '#/logger'
 import {isWeb} from '#/platform/detection'
 import {isNative} from '#/platform/detection'
-import {useIsBirthDateUpdateAllowed} from '#/state/birthDate'
+import {useIsBirthdateUpdateAllowed} from '#/state/birthdate'
 import {useSessionApi} from '#/state/session'
 import {atoms as a, useBreakpoints, useTheme, web} from '#/alf'
 import {Admonition} from '#/components/Admonition'
@@ -42,10 +42,10 @@ export function NoAccessScreen() {
   const {_} = useLingui()
   const {gtPhone} = useBreakpoints()
   const insets = useSafeAreaInsets()
-  const birthdayControl = useDialogControl()
+  const birthdateControl = useDialogControl()
   const {data} = useAgeAssuranceDataContext()
   const region = useAgeAssuranceRegionConfig()
-  const isBirthdateUpdateAllowed = useIsBirthDateUpdateAllowed()
+  const isBirthdateUpdateAllowed = useIsBirthdateUpdateAllowed()
   const {logoutCurrentAccount} = useSessionApi()
 
   const isAARegion = !!region
@@ -78,15 +78,15 @@ export function NoAccessScreen() {
     logoutCurrentAccount('AgeAssuranceNoAccessScreen')
   }, [logoutCurrentAccount])
 
-  const birthdayUpdateText = canUpdateBirthday ? (
+  const birthdateUpdateText = canUpdateBirthday ? (
     <Text style={[textStyles]}>
       <Trans>
-        If your birth date is not accurate, you can update it by{' '}
+        If your birthdate is not accurate, you can update it by{' '}
         <SimpleInlineLinkText
-          label={_(msg`Click here to update your birthday`)}
+          label={_(msg`Click here to update your birthdate`)}
           style={[textStyles]}
           {...createStaticClick(() => {
-            birthdayControl.open()
+            birthdateControl.open()
           })}>
           clicking here
         </SimpleInlineLinkText>
@@ -132,7 +132,7 @@ export function NoAccessScreen() {
                       </Text>
                     ))}
 
-                    {birthdayUpdateText}
+                    {birthdateUpdateText}
                   </View>
 
                   <AccessSection />
@@ -141,12 +141,12 @@ export function NoAccessScreen() {
                 <View style={[a.gap_lg]}>
                   <Text style={[textStyles]}>
                     <Trans>
-                      Unfortunately, the birth date you have saved to your
+                      Unfortunately, the birthdate you have saved to your
                       profile makes you too young to access Bluesky.
                     </Trans>
                   </Text>
 
-                  {birthdayUpdateText}
+                  {birthdateUpdateText}
                 </View>
               )}
             </>
@@ -154,17 +154,17 @@ export function NoAccessScreen() {
             <View style={[a.gap_lg]}>
               <Text style={[textStyles]}>
                 <Trans>
-                  Looks like you haven't added your birth date. You must provide
+                  Looks like you haven't added your birthdate. You must provide
                   an accurate date of birth to use Bluesky.
                 </Trans>
               </Text>
               <Button
                 color="primary"
                 size="large"
-                label={_(msg`Click here to update your birthday`)}
-                onPress={() => birthdayControl.open()}>
+                label={_(msg`Click here to update your birthdate`)}
+                onPress={() => birthdateControl.open()}>
                 <ButtonText>
-                  <Trans>Add your birth date</Trans>
+                  <Trans>Add your birthdate</Trans>
                 </ButtonText>
               </Button>
             </View>
@@ -187,7 +187,7 @@ export function NoAccessScreen() {
         </View>
       </ScrollView>
 
-      <BirthDateSettingsDialog control={birthdayControl} />
+      <BirthDateSettingsDialog control={birthdateControl} />
       <AgeAssuranceRedirectDialog />
 
       {/*
diff --git a/src/ageAssurance/data.tsx b/src/ageAssurance/data.tsx
index e3a7580a28..1e21669285 100644
--- a/src/ageAssurance/data.tsx
+++ b/src/ageAssurance/data.tsx
@@ -15,7 +15,7 @@ import debounce from 'lodash.debounce'
 import {networkRetry} from '#/lib/async/retry'
 import {PUBLIC_BSKY_SERVICE} from '#/lib/constants'
 import {getAge} from '#/lib/strings/time'
-import {snoozeBirthDateUpdateAllowedForDid} from '#/state/birthDate'
+import {snoozeBirthdateUpdateAllowedForDid} from '#/state/birthdate'
 import {useAgent, useSession} from '#/state/session'
 import * as debug from '#/ageAssurance/debug'
 import {logger} from '#/ageAssurance/logger'
@@ -337,7 +337,7 @@ export async function getOtherRequiredData({
     isUserUnderMinimumAge(data.birthdate) &&
     !isLegacyBirthdateBug(data.birthdate)
   ) {
-    snoozeBirthDateUpdateAllowedForDid(did!)
+    snoozeBirthdateUpdateAllowedForDid(did!)
   }
 
   return data
diff --git a/src/components/dialogs/BirthDateSettings.tsx b/src/components/dialogs/BirthDateSettings.tsx
index 4d593b53de..bf4af528a3 100644
--- a/src/components/dialogs/BirthDateSettings.tsx
+++ b/src/components/dialogs/BirthDateSettings.tsx
@@ -8,9 +8,9 @@ import {getAge, getDateAgo} from '#/lib/strings/time'
 import {logger} from '#/logger'
 import {isIOS, isWeb} from '#/platform/detection'
 import {
-  useBirthDateMutation,
-  useIsBirthDateUpdateAllowed,
-} from '#/state/birthDate'
+  useBirthdateMutation,
+  useIsBirthdateUpdateAllowed,
+} from '#/state/birthdate'
 import {
   usePreferencesQuery,
   type UsePreferencesQueryResponse,
@@ -33,7 +33,7 @@ export function BirthDateSettingsDialog({
   const t = useTheme()
   const {_} = useLingui()
   const {isLoading, error, data: preferences} = usePreferencesQuery()
-  const isBirthdateUpdateAllowed = useIsBirthDateUpdateAllowed()
+  const isBirthdateUpdateAllowed = useIsBirthdateUpdateAllowed()
 
   return (
     <Dialog.Outer control={control} nativeOptions={{preventExpansion: true}}>
@@ -112,7 +112,7 @@ function BirthdayInner({
     isError,
     error,
     mutateAsync: setBirthDate,
-  } = useBirthDateMutation()
+  } = useBirthdateMutation()
   const hasChanged = date !== preferences.birthDate
 
   const age = getAge(new Date(date))
diff --git a/src/state/birthDate.ts b/src/state/birthdate.ts
similarity index 85%
rename from src/state/birthDate.ts
rename to src/state/birthdate.ts
index 2814a1be46..bfa3e9561f 100644
--- a/src/state/birthDate.ts
+++ b/src/state/birthdate.ts
@@ -16,21 +16,21 @@ const BIRTHDATE_DELAY_HOURS = IS_DEV ? 0.001 : 48
  *
  * Use {@link useIsBirthDateUpdateAllowed} to check if an update is allowed.
  */
-export function snoozeBirthDateUpdateAllowedForDid(did: string) {
-  account.set([did, 'birthDateLastUpdatedAt'], new Date().toISOString())
+export function snoozeBirthdateUpdateAllowedForDid(did: string) {
+  account.set([did, 'birthdateLastUpdatedAt'], new Date().toISOString())
 }
 
 /**
  * Returns whether a birthdate update is currently allowed, based on the
  * last update timestamp stored locally.
  */
-export function useIsBirthDateUpdateAllowed() {
+export function useIsBirthdateUpdateAllowed() {
   const {currentAccount} = useSession()
   return useMemo(() => {
     if (!currentAccount) return false
     const lastUpdated = account.get([
       currentAccount.did,
-      'birthDateLastUpdatedAt',
+      'birthdateLastUpdatedAt',
     ])
     if (!lastUpdated) return true
     const lastUpdatedDate = new Date(lastUpdated)
@@ -40,7 +40,7 @@ export function useIsBirthDateUpdateAllowed() {
   }, [currentAccount])
 }
 
-export function useBirthDateMutation() {
+export function useBirthdateMutation() {
   const queryClient = useQueryClient()
   const agent = useAgent()
   const patchOtherRequiredData = usePatchAgeAssuranceOtherRequiredData()
@@ -58,7 +58,7 @@ export function useBirthDateMutation() {
        * birthdate, which may change the user's age assurance access level.
        */
       patchOtherRequiredData({birthdate: bday})
-      snoozeBirthDateUpdateAllowedForDid(agent.sessionManager.did!)
+      snoozeBirthdateUpdateAllowedForDid(agent.sessionManager.did!)
     },
   })
 }
diff --git a/src/state/session/agent.ts b/src/state/session/agent.ts
index c391171542..5c8ce3b97f 100644
--- a/src/state/session/agent.ts
+++ b/src/state/session/agent.ts
@@ -25,7 +25,7 @@ import {
 import {tryFetchGates} from '#/lib/statsig/statsig'
 import {getAge} from '#/lib/strings/time'
 import {logger} from '#/logger'
-import {snoozeBirthDateUpdateAllowedForDid} from '#/state/birthDate'
+import {snoozeBirthdateUpdateAllowedForDid} from '#/state/birthdate'
 import {snoozeEmailConfirmationPrompt} from '#/state/shell/reminders'
 import {
   prefetchAgeAssuranceData,
@@ -185,7 +185,7 @@ export async function createAgentAndCreateAccount(
    */
   setCreatedAtForDid({did: account.did, createdAt})
   setBirthdateForDid({did: account.did, birthdate})
-  snoozeBirthDateUpdateAllowedForDid(account.did)
+  snoozeBirthdateUpdateAllowedForDid(account.did)
   // do this last
   const aa = prefetchAgeAssuranceData({agent})
 
diff --git a/src/storage/schema.ts b/src/storage/schema.ts
index ac3c1054d7..4cc9782262 100644
--- a/src/storage/schema.ts
+++ b/src/storage/schema.ts
@@ -60,7 +60,8 @@ export type Account = {
   searchAccountHistory?: string[]
 
   /**
-   * The ISO string of the user's birthday as last set locally.
+   * The ISO date string of when this account's birthdate was last updated on
+   * this device.
    */
-  birthDateLastUpdatedAt?: string
+  birthdateLastUpdatedAt?: string
 }