Must have free android apps 2012

The following are list of android apps I have on my phone and wouldn't ever uninstall. All of them serve there purpose really well, do not eat up phone(or SD) space and battery, have no annoying ad pop ups and all of them are FREE!! They are best of their kind. Do try them!

1. Android Assistant(18 features)

(Average rating: 4.5 from 54,858 votes)
It helps manage and improve phone's performance. Features of this app which I use most are:
a. Process Manager (Auto Boost and Quick Boost can distinguish different types of processes thus will not kill fatal system processes and apps in Ignore List.)
b. Cache Cleaner (saves a lot of memory)
c. System Clean (Browser History, Clipboard, Market History, Gmail History, Google Earth History, Google Map History)
d. Save Battery Settings (bluetooth, wifi, gps, auto-sync, orientation, haptic feedback, screen brightness, timeout)
e. File Manager (allows to browse through files in SD cards)
f. Batch Uninstall (I use this a lot since I install and uninstall apps a lot)
g. App 2 SD (helps save phone memory)

These are just 8 of the 18 features. To check out the 18 features and know more about this app, go to google play official site: Android Assistant.

2. Antivirus Free

(Average rating: 4.5 from 56,720 votes)
I have used a lot of antivirus app and I guess this one is the best. It detects application install automatically and let you know if the app is safe or malicious. It detects faster than other antivirus app. It is lightweight too.
To check out and know more about this app, go to google play official site: Antivirus Free

3.Bathing Cat

(Average rating: 4.6 from 32,224 votes)
The green battery bar on android gives me no estimate of how much battery I have left. I want an exact figure you know, in percentage. And sometimes while charging my battery gets so heated up that I wonder if my phone is gonna burst! So this app helps me with these two rants.

It tells you percentage of battery charge remaining, no the app doesn't tell you, the cute kitten tells you! The kitten as name tells loves to bath. The water in it's tub represents battery level. If you are charging you phone you can see water filling the tub from a pipe. If water level is too low(you can set how low) the kitten becomes so angry and asks you to charge, cool right?
It also tells you the temperature of battery. If it gets too hot(you can set how hot), the cat starts sweating and asks "Am I on sun?!" It also asks a dozen other things, reminds you to have lunch, go to sleep etc. Yes you get a companion on your home screen!! You can bath it, feed it etc, no you don't have a choice, she will get very upset if you don't feed her milk. I guess I got too excited talking about this!
Anyway, check it out here: Bathing cat.

4. MixZing Media Player

(Average rating: 4.4 from 66,241 votes)

I was not really impressed with the built-in media player. Searching for songs, playing by folder, making playlists etc. could be easier. So I tried out media players from the market and found MixZing to be the best!
Music ID identifies your songs, even those without valid tags, and lets you clean up their tags and album art. Displays lyrics for millions of songs. Sleep timer is another great feature.

Check it out at MixZIng media player.

5. Uva silent widget camera

(Average rating: 4.0 from 6,643 votes)

I love to take photos in the dim light of restaurants but the loud clicking sound of camera embarrasses me. So I got this one. Two complaints that I have: It saves photos to different folder in SD, viewing it right after we take to see if it came out well, is a little difficult since it saves away the photo and gets ready to take a new one right away!

Anyways, here is Uva silent widget camera.

6. Screen Filter

(Average rating: 4.7 from 13,279 votes)

I read myself into sleep. It is possible to decrease brightness in phone settings to 11%, but it still is too bright to read/play games at night. Screen Filter applies a shade that acts as a dimmer to ensure eyes don't hurt.

You can find it here: Screen Filter

7. Sundroid Free Sunrise Sunrise

(Average rating: 4.4 from 1,233 votes)
Why would anyone want to know sunrise and sunset time? Well, I go for jogging a little before sunset or a little after sunrise. And this is the best out there for the purpose. Worldwide sunrise, sunset, moonrise and moonset times on your phone! Sundroid Free Sunrise Sunrise

8. Path tracking lite.

(Average rating: 4.2 from 337 votes)
Path Tracking Lite records your GPS positions while you perform activities such as Walk/Run, Driving and Bike. Each activity is drawn with different color on the map. It display current and average speed, calories burned, time and distance information while performing activities. You can save and review all these information later for analysis. Pretty accurate and lightweight! Path Tracking lite.

9. SoundHound

(Average rating: 4.4 from 137,664 votes)
Unlimited music recognition! With the world's fastest music recognition and exclusive singing search, SoundHound is instant music search and discovery. SoundHound

10. 20000 Awesome Jokes

 (Average rating: 4.3 from 10,527 votes)

 Have a long journey to office, get this. No net conn. required. 20000 jokes in 40+ categories! Only if you are a person who likes jokes! :P
20000 Awesome Jokes

So, these are the apps from the "google play store" the old android market that I think are must-have!! What are your favorites?