diff --git a/README.md b/README.md
index 01e0c2a..eabf74c 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,8 @@ library for writing user mode arm11 code for the 3DS (CTR)
 
 the goal with this is to create a very straightforward interface with the 3DS's OS.
 it is not meant to provide higher level functions; to put things in perspective, the purpose of ctrulib would be to sit between the OS and a possible port of SDL rather than replace it.
+
+license
+=======
+
+you may do whatever the hell you want with ctrulib as long as you give proper credit to its authors. that includes making commercial games/apps that use ctrulib. i'd personally rather you didn't sell ctrulib itself, because that would not be nice of you, but i'm not a lawyer and it's not like i'm going to sue you.
diff --git a/libctru/include/3ds/services/apt.h b/libctru/include/3ds/services/apt.h
index 1a1e644..9377c0b 100644
--- a/libctru/include/3ds/services/apt.h
+++ b/libctru/include/3ds/services/apt.h
@@ -67,3 +67,5 @@ Result APT_ReplySleepQuery(Handle* handle, NS_APPID appID, u32 a);
 Result APT_ReplySleepNotificationComplete(Handle* handle, NS_APPID appID);
 Result APT_PrepareToCloseApplication(Handle* handle, u8 a);
 Result APT_CloseApplication(Handle* handle, u32 a, u32 b, u32 c);
+Result APT_SetAppCpuTimeLimit(Handle* handle, u32 percent);
+Result APT_GetAppCpuTimeLimit(Handle* handle, u32 *percent);
diff --git a/libctru/source/services/apt.c b/libctru/source/services/apt.c
index bda13b6..d2f65d9 100644
--- a/libctru/source/services/apt.c
+++ b/libctru/source/services/apt.c
@@ -743,3 +743,35 @@ Result APT_CloseApplication(Handle* handle, u32 a, u32 b, u32 c)
 
 	return cmdbuf[1];
 }
+
+//See http://3dbrew.org/APT:SetApplicationCpuTimeLimit
+Result APT_SetAppCpuTimeLimit(Handle* handle, u32 percent)
+{
+	if(!handle)handle=&aptuHandle;
+
+	u32* cmdbuf=getThreadCommandBuffer();
+	cmdbuf[0]=0x4F0080;
+	cmdbuf[1]=1;
+	cmdbuf[2]=percent;
+	
+	Result ret=0;
+	if((ret=svcSendSyncRequest(*handle)))return ret;
+
+	return cmdbuf[1];
+}
+
+Result APT_GetAppCpuTimeLimit(Handle* handle, u32 *percent)
+{
+	if(!handle)handle=&aptuHandle;
+
+	u32* cmdbuf=getThreadCommandBuffer();
+	cmdbuf[0]=0x500040;
+	cmdbuf[1]=1;
+	
+	Result ret=0;
+	if((ret=svcSendSyncRequest(*handle)))return ret;
+
+	if(percent)*percent=cmdbuf[2];
+
+	return cmdbuf[1];
+}