Is that BattSaver any good? It's $4. Just want some advise before buying. Thanks
It's really amazing. It can "double" your battery life. It can automatically turn on and off your radios and system functions like Wi-Fi, Data, 3G, Location etc.. It also turns them on and off when you lock and unlock your device, so you're just connected to the internet when you're actually using your device.
You could say: But I wouldn't get any notifications, messages, mails etc., BUT it also turns your Wi-Fi, Data, 3G etc. on to check them. You can set an intervall, like every 3 min or every 45 min, (like I do).
There are also a lot more really great funktions, like switching to an extreme mode if your device battery level is under 15% which turns everything off to save battery.
It's one of the best Cydia apps, I can highly recommend it
If you still have questions, just ask
I can also create some screenshots