March is over, time to sum things up.

If you are new to this series, let me explain it to you: Since Android is an open platform, I decided to be open about the income I’m making with my private Android apps too. In the last report I aimed to reach $4,000 for the last month. You will see if it worked out.

For all income reports, please click here.

Which Apps?

3D Invaders – about 231,000 installs (+18k), 15% active

AL Voice Recorder – about 700,000 installs (+48k), 20% active

AL Voice Recorder Ad Free – 1013 installs (+49), 35% active Android App – 455 installs (+24), 13% active

SmsToSpeech full – 755 installs (+15), 30% active

14K less downloads than in February, a slow decrease regarding the growth but still fine.

What did I do?

Nothing new.

Advertising Stats

Here are some statistics from the two advertising networks I’m using, AdMob and Madvertise. Please read the second income report for an explanation of the following numbers.


Requests: 686,761 (-5k)

Impressions: 673,586 (-7k)

Fill Rate: 98.08% (-0.28%)

Clicks: 30,474 (+10.2k)

CTR: 4.52% (+1.56%)

eCPM: $2.08 (+$0.79)

House Ads: 187 (-2,309)

Adjusted Requests:  686,948 (-7.5k)

Adjusted Fill Rate: 98.01% (+0.03%)


Requests: 1,551,268 (+369k)

Impressions: 94,877 (-48k)

Fill Rate: 6.12% (-6.02%)

Clicks: 3,005 (-1,731)

CTR: 3.17% (-0.14%)

eCPM: $3.01 (-$2.23)

AdMob performed awesome with an incredible CTR, I assume this is because of better ad content. madvertise sucked big time this month with only 6% fillrate, which is really not satisfying. Because their developer fund ended, a 40% cut applies to all earnings which causes the big loss in the eCPM. Its still slightly better than those of AdMob but if that changes, theres no more argument that keeps madvertise in my apps.

How much?

Here are the numbers:


3D Invaders: $508.39

AL Voice Recorder: $895.47

AdMob Total: $1,403.86 (+$525.04)



3D Invaders: ~$220.97

AL Voice Recorder: ~$64.61

madvertise Total: ~$285.58 (-$465.64)


Market sales: ~$126.59 (+$49.96)

In-App purchases: ~$7.94 (-$6.90)


Total: ~$1,823.96 (+$102.47)

AdMob outperformed madvertise by far this month, which is pretty sad because I like them. I hope this will change soon, we will see.

What’s next?

I didn’t reach the goal I set in the last month again, so it again is $4,000 for this month. I think this is impossible but I hope I will get closer. I will integrate a new ad network in the next weeks, so if you have any great tipps, let me know.


Please feel free to share your own experiences and hints in the comments. Ask questions, share, do whatever you like.