Here are the results so far from this experiment for my app
"PuzzleQube".

A little background. This is the free version of my first app and it
was released around 3 weeks ago, about 12 days before the experiement
started. The app is a picture puzzle where 6 pictures are divided into
smaller square tiles and scrambled over the faces of a cube. The idea
is to unscramble the pictures by rotating the cube and swapping
picture tiles. As a learning exercise it has been great for me but I
would not pretend that it is an earth shattering app. It is, however
fun to play and feedback has been very positive.

After the initial release there was a flurry of downloads while the
app was visible on the "By Date" (just released) list. This tailed off
after 3 or 4 days to give a daily average new downloads of somewhere
between 10 and 15. Total app downloads before the experiment started
were about 560.

John's ad promotion experiment created the following clicks from his
app:

          campaign          | hits_left | impressions | clicks | ctr
----------------------------+-----------+-------------+--------+------
 PuzzleQube                 |         0 |       30001 |    620 | 2.07

So 620 people clicked through the ad to the Market page for my app.

When the experiment started the daily downloads for PuzzleQube
increased to around 20-30 and the total downloads increased to around
750 (as of yesterday) so the app promotion was definitely effective -
for a while.

What happened though is that after around 5 or 6 days the daily
downloads dropped back again, albeit to a level nearer 15-20. I
believe that this happened when the 'regular' user base of John's app
(the one promoting mine) had all seen the ad for my app and if they
were going to click on it they would have done so. Hence showing the
ad further times had little incremental effect.

To me this shows that app promotion in this way can be effective but
that perhaps the most effective way would be to have a group of apps
all cross promoting each other (like the App Circle concept) so that
there was greater exposure to a wider group of potential users that is
constantly changing.

It also highlights the challenges faced by new apps in getting
noticed. If I was a new user there would be no way of finding
PuzzleQube using the market. It does not even show up in the "By
Popularity" list for my category yet as there seems to be a limit and
I can not see apps with less than 1000 downloads showing up. So it's a
catch 22 situation where to be noticed you already have to be
popular ... Of course, I expect that when I release an update there
will be a new flurry of downloads as it becomes visible on the Market
again.

I will be looking at other app promotion methods going forward as well
and if any of you have favourite methods I would be interested to hear
of them.

Regards, Paul



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