diff --git a/nx/include/switch/services/notif.h b/nx/include/switch/services/notif.h
index f1d83bb0..93891fc7 100644
--- a/nx/include/switch/services/notif.h
+++ b/nx/include/switch/services/notif.h
@@ -8,11 +8,156 @@
 #include "../types.h"
 #include "../kernel/event.h"
 #include "../services/applet.h"
+#include "../services/acc.h"
 #include "../sf/service.h"
 
+/// ServiceType for \ref notifInitialize.
+typedef enum {
+    NotifServiceType_Application    = 0, ///< Initializes notif:a, for Application.
+    NotifServiceType_System         = 1, ///< Initializes notif:s, for System.
+} NotifServiceType;
+
+/// Data extracted from NotifWeeklyScheduleAlarmSetting::settings. This uses local-time.
+typedef struct {
+    s32 hour;                                  ///< Hour.
+    s32 minute;                                ///< Minute.
+} NotifAlarmTime;
+
+/// WeeklyScheduleAlarmSetting
+typedef struct {
+    u8 unk_x0[0xa];                            ///< Unknown.
+    s16 settings[7];                           ///< Schedule settings for each day of the week, Sun-Sat. High byte is the hour, low byte is the minute. This uses local-time.
+} NotifWeeklyScheduleAlarmSetting;
+
+/// AlarmSetting
+typedef struct {
+    u16 alarm_setting_id;                      ///< AlarmSettingId
+    u8 kind;                                   ///< Kind: 0 = WeeklySchedule.
+    u8 muted;                                  ///< u8 bool flag for whether this AlarmSetting is muted (non-zero = AlarmSetting turned off, zero = on).
+    u8 pad[4];                                 ///< Padding.
+    AccountUid uid;                            ///< \ref AccountUid. User account associated with this AlarmSetting. Used for the preselected_user (\ref accountGetPreselectedUser) when launching the Application when the system was previously in sleep-mode, instead of launching the applet for selecting the user.
+    u64 application_id;                        ///< ApplicationId
+    u64 unk_x20;                               ///< Unknown.
+    NotifWeeklyScheduleAlarmSetting schedule;  ///< \ref NotifWeeklyScheduleAlarmSetting
+} NotifAlarmSetting;
+
+/// Maximum alarms that can be registered at the same time by the host Application.
+#define NOTIF_MAX_ALARMS 8
+
+/// Initialize notif. Only available on [9.0.0+]. Note that using Alarms also requires the [9.0.0+] firmware update for controllers to be installed.
+Result notifInitialize(NotifServiceType service_type);
+
+/// Exit notif.
+void notifExit(void);
+
+/// Gets the Service object for the actual notif:* service session.
+Service* notifGetServiceSession(void);
+
+/**
+ * @brief Creates a \ref NotifAlarmSetting.
+ * @note This clears the struct, with all schedule settings set the same as \ref notifAlarmSettingDisable.
+ * @param[out] alarm_setting \ref NotifAlarmSetting
+ */
+void notifAlarmSettingCreate(NotifAlarmSetting *alarm_setting);
+
+/**
+ * @brief Sets whether the \ref NotifAlarmSetting is muted.
+ * @note By default (\ref notifAlarmSettingCreate) this is false.
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] flag Whether the alarm is muted (true = Alarm turned off, false = on).
+ */
+NX_INLINE void notifAlarmSettingSetIsMuted(NotifAlarmSetting *alarm_setting, bool flag) {
+    alarm_setting->muted = flag!=0;
+}
+
+/**
+ * @brief Sets the \ref AccountUid for the \ref NotifAlarmSetting, see NotifAlarmSetting::uid.
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] uid \ref AccountUid. If want to clear the uid after it was previously set, you can use an all-zero uid to reset to the default (\ref notifAlarmSettingCreate).
+ */
+NX_INLINE void notifAlarmSettingSetUid(NotifAlarmSetting *alarm_setting, AccountUid uid) {
+    alarm_setting->uid = uid;
+}
+
+/**
+ * @brief Gets whether the schedule setting for the specified day_of_week is enabled, for the \ref NotifAlarmSetting.
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] day_of_week Day-of-week, must be 0-6 (Sun-Sat).
+ * @param[out] out Whether the setting is enabled.
+ */
+Result notifAlarmSettingIsEnabled(NotifAlarmSetting *alarm_setting, u32 day_of_week, bool *out);
+
+/**
+ * @brief Gets the schedule setting for the specified day_of_week, for the \ref NotifAlarmSetting.
+ * @note Should not be used if the output from \ref notifAlarmSettingIsEnabled is false.
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] day_of_week Day-of-week, must be 0-6 (Sun-Sat).
+ * @param[out] out \ref NotifAlarmTime
+ */
+Result notifAlarmSettingGet(NotifAlarmSetting *alarm_setting, u32 day_of_week, NotifAlarmTime *out);
+
+/**
+ * @brief Enables the schedule setting for the specified day_of_week, for the \ref NotifAlarmSetting. This uses local-time.
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] day_of_week Day-of-week, must be 0-6 (Sun-Sat).
+ * @param[in] hour Hour.
+ * @param[in] minute Minute.
+ */
+Result notifAlarmSettingEnable(NotifAlarmSetting *alarm_setting, u32 day_of_week, s32 hour, s32 minute);
+
+/**
+ * @brief Disables the schedule setting for the specified day_of_week, for the \ref NotifAlarmSetting.
+ * @note Schedule settings are disabled by default (\ref notifAlarmSettingCreate).
+ * @param alarm_setting \ref NotifAlarmSetting
+ * @param[in] day_of_week Day-of-week, must be 0-6 (Sun-Sat).
+ */
+Result notifAlarmSettingDisable(NotifAlarmSetting *alarm_setting, u32 day_of_week);
+
+/**
+ * @brief Registers the specified AlarmSetting.
+ * @note See \ref NOTIF_MAX_ALARMS for the maximum alarms.
+ * @param[out] alarm_setting_id AlarmSettingId
+ * @param[in] alarm_setting \ref NotifAlarmSetting
+ * @param[in] buffer Input buffer containing the ApplicationParameter. Optional, can be NULL.
+ * @param[in] size Input buffer size. Optional, can be 0.
+ */
+Result notifRegisterAlarmSetting(u16 *alarm_setting_id, const NotifAlarmSetting *alarm_setting, const void* buffer, size_t size);
+
+/**
+ * @brief Updates the specified AlarmSetting.
+ * @param[in] alarm_setting \ref NotifAlarmSetting
+ * @param[in] buffer Input buffer containing the ApplicationParameter. Optional, can be NULL.
+ * @param[in] size Input buffer size. Optional, can be 0.
+ */
+Result notifUpdateAlarmSetting(const NotifAlarmSetting *alarm_setting, const void* buffer, size_t size);
+
+/**
+ * @brief Gets a listing of AlarmSettings.
+ * @param[out] alarm_settings Output \ref NotifAlarmSetting array.
+ * @param[in] count Total entries in the alarm_settings array.
+ * @param[out] total_out Total output entries.
+ */
+Result notifListAlarmSettings(NotifAlarmSetting *alarm_settings, s32 count, s32 *total_out);
+
+/**
+ * @brief Loads the ApplicationParameter for the specified AlarmSetting.
+ * @param[in] alarm_setting_id AlarmSettingId
+ * @param[out] buffer Output buffer containing the ApplicationParameter.
+ * @param[in] size Output buffer size.
+ * @param[out] actual_size Actual output size.
+ */
+Result notifLoadApplicationParameter(u16 alarm_setting_id, void* buffer, size_t size, u32 *actual_size);
+
+/**
+ * @brief Deletes the specified AlarmSetting.
+ * @param[in] alarm_setting_id AlarmSettingId
+ */
+Result notifDeleteAlarmSetting(u16 alarm_setting_id);
+
 /**
  * @brief Gets an Event which is signaled when data is available with \ref notifTryPopNotifiedApplicationParameter.
  * @note This is a wrapper for \ref appletGetNotificationStorageChannelEvent, see that for the usage requirements.
+ * @note Some official apps don't use this.
  * @note The Event must be closed by the user once finished with it.
  * @param[out] out_event Output Event with autoclear=false.
  */
@@ -23,6 +168,8 @@ NX_INLINE Result notifGetNotificationSystemEvent(Event *out_event) {
 /**
  * @brief Uses \ref appletTryPopFromNotificationStorageChannel then reads the data from there into the output params.
  * @note This is a wrapper for \ref appletTryPopFromNotificationStorageChannel, see that for the usage requirements.
+ * @note The system will only push data for this when launching the Application when the Alarm was triggered, where the system was previously in sleep-mode.
+ * @note Some official apps don't use this.
  * @param[out] buffer Output buffer.
  * @param[out] size Output buffer size.
  * @param[out] out_size Size of the data which was written into the output buffer. Optional, can be NULL.
diff --git a/nx/source/services/notif.c b/nx/source/services/notif.c
index c03dd98f..d4ab7f29 100644
--- a/nx/source/services/notif.c
+++ b/nx/source/services/notif.c
@@ -1,6 +1,161 @@
+#include <string.h>
 #include "service_guard.h"
 #include "services/notif.h"
 
+#include "runtime/hosversion.h"
+
+static NotifServiceType g_notifServiceType = NotifServiceType_Application;
+
+static Service g_notifSrv;
+
+NX_GENERATE_SERVICE_GUARD_PARAMS(notif, (NotifServiceType service_type), (service_type));
+
+Result _notifInitialize(NotifServiceType service_type) {
+    if (hosversionBefore(9,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+    g_notifServiceType = service_type;
+    Result rc = MAKERESULT(Module_Libnx, LibnxError_BadInput);
+    switch (g_notifServiceType) {
+        case NotifServiceType_Application:
+            rc = smGetService(&g_notifSrv, "notif:a");
+            break;
+        case NotifServiceType_System:
+            rc = smGetService(&g_notifSrv, "notif:s");
+            break;
+    }
+
+    if (R_SUCCEEDED(rc)) {
+        rc = serviceConvertToDomain(&g_notifSrv);
+    }
+
+    if (R_SUCCEEDED(rc) && g_notifServiceType == NotifServiceType_Application) { // Initialize cmd
+        u64 pid_placeholder = 0;
+        serviceAssumeDomain(&g_notifSrv);
+        rc = serviceDispatchIn(&g_notifSrv, 1000, pid_placeholder, .in_send_pid = true);
+    }
+
+    return rc;
+}
+
+void _notifCleanup(void) {
+    serviceClose(&g_notifSrv);
+}
+
+Service* notifGetServiceSession(void) {
+    return &g_notifSrv;
+}
+
+void notifAlarmSettingCreate(NotifAlarmSetting *alarm_setting) {
+    memset(alarm_setting, 0, sizeof(*alarm_setting));
+    memset(alarm_setting->schedule.settings, 0xFF, sizeof(alarm_setting->schedule.settings));
+}
+
+Result notifAlarmSettingIsEnabled(NotifAlarmSetting *alarm_setting, u32 day_of_week, bool *out) {
+    Result rc=0;
+
+    *out = false;
+
+    if (day_of_week >= 7)
+        rc = MAKERESULT(Module_Libnx, LibnxError_BadInput);
+
+    if (R_SUCCEEDED(rc)) {
+        s16 tmp = alarm_setting->schedule.settings[day_of_week];
+        *out = ((u8)(tmp>>8)) < 24 && (((u8)tmp) < 60);//hour<24 && minute<60
+    }
+
+    return rc;
+}
+
+Result notifAlarmSettingGet(NotifAlarmSetting *alarm_setting, u32 day_of_week, NotifAlarmTime *out) {
+    Result rc=0;
+
+    memset(out, 0, sizeof(*out));
+
+    if (day_of_week >= 7)
+        rc = MAKERESULT(Module_Libnx, LibnxError_BadInput);
+
+    if (R_SUCCEEDED(rc)) {
+        s16 tmp = alarm_setting->schedule.settings[day_of_week];
+        out->hour = (u8)(tmp>>8);
+        out->minute = (u8)tmp;
+    }
+
+    return rc;
+}
+
+Result notifAlarmSettingEnable(NotifAlarmSetting *alarm_setting, u32 day_of_week, s32 hour, s32 minute) {
+    Result rc=0;
+
+    if (day_of_week >= 7)
+        rc = MAKERESULT(Module_Libnx, LibnxError_BadInput);
+
+    if (R_SUCCEEDED(rc))
+        alarm_setting->schedule.settings[day_of_week] = (((u8)hour)<<8) | ((u8)minute);
+
+    return rc;
+}
+
+Result notifAlarmSettingDisable(NotifAlarmSetting *alarm_setting, u32 day_of_week) {
+    Result rc=0;
+
+    if (day_of_week >= 7)
+        rc = MAKERESULT(Module_Libnx, LibnxError_BadInput);
+
+    if (R_SUCCEEDED(rc))
+        alarm_setting->schedule.settings[day_of_week] = -1;
+
+    return rc;
+}
+
+Result notifRegisterAlarmSetting(u16 *alarm_setting_id, const NotifAlarmSetting *alarm_setting, const void* buffer, size_t size) {
+    serviceAssumeDomain(&g_notifSrv);
+    return serviceDispatchOut(&g_notifSrv, 500, *alarm_setting_id,
+        .buffer_attrs = {
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+        },
+        .buffers = {
+            { alarm_setting, sizeof(*alarm_setting) },
+            { buffer, size },
+        },
+    );
+}
+
+Result notifUpdateAlarmSetting(const NotifAlarmSetting *alarm_setting, const void* buffer, size_t size) {
+    serviceAssumeDomain(&g_notifSrv);
+    return serviceDispatch(&g_notifSrv, 510,
+        .buffer_attrs = {
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+            SfBufferAttr_HipcMapAlias | SfBufferAttr_In,
+        },
+        .buffers = {
+            { alarm_setting, sizeof(*alarm_setting) },
+            { buffer, size },
+        },
+    );
+}
+
+Result notifListAlarmSettings(NotifAlarmSetting *alarm_settings, s32 count, s32 *total_out) {
+    serviceAssumeDomain(&g_notifSrv);
+    return serviceDispatchOut(&g_notifSrv, 520, *total_out,
+        .buffer_attrs = { SfBufferAttr_HipcMapAlias | SfBufferAttr_Out },
+        .buffers = { { alarm_settings, count*sizeof(NotifAlarmSetting) } },
+    );
+}
+
+Result notifLoadApplicationParameter(u16 alarm_setting_id, void* buffer, size_t size, u32 *actual_size) {
+    serviceAssumeDomain(&g_notifSrv);
+    return serviceDispatchInOut(&g_notifSrv, 530, alarm_setting_id, *actual_size,
+        .buffer_attrs = { SfBufferAttr_HipcMapAlias | SfBufferAttr_Out },
+        .buffers = { { buffer, size } },
+    );
+}
+
+Result notifDeleteAlarmSetting(u16 alarm_setting_id) {
+    serviceAssumeDomain(&g_notifSrv);
+    return serviceDispatchIn(&g_notifSrv, 540, alarm_setting_id);
+}
+
 Result notifTryPopNotifiedApplicationParameter(void* buffer, u64 size, u64 *out_size) {
     Result rc=0;
     AppletStorage storage;