Looking on the internet deeply has found these results:

to this end is the most popular phrase on the web.

to this effect 1819,000 results on the web	to this end 139,600,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Sep 23, 2012 ... It's grammatical, but to this effect is far too formal an expression to use in that context. What you would say is something like I can't make any ... abstract criteria to this effect. ... introduced a motion to this effect. .... that the auditors did not include any recommendation to this effect in their final report. Forum discussions with the word(s) "to this effect" in the title: Hipotalamitis can lead to reduced vasoconstriction ... this effect may cause gravitational pooling in ... Apr 27, 2012 ... What does "to this effect" in the following sentence mean? (This sentence ... However, if you are not successful, we will inform you to this effect.	Member States should approve Commission proposals to this end. This provision amends the convention implementing the Schengen agreement and the so Several initiatives were launched in 2002 and 2001 to this end. The Commission may, to this end, submit proposals for the maximum amounts by... called common manual to this end. The Commission has not yet received any applications to this end. A cohesive foreign policy is an important means to this end. It is therefore appropriate to establish a programme to this end.

to this effect

1819,000 results on the web

to this end

139,600,000 results on the web

More popular!

Sep 23, 2012 ... It's grammatical, but to this effect is far too formal an expression to use in that context. What you would say is something like I can't make any ...
abstract criteria to this effect. ... introduced a motion to this effect. .... that the auditors did not include any recommendation to this effect in their final report.
Forum discussions with the word(s) "to this effect" in the title: Hipotalamitis can lead to reduced vasoconstriction ... this effect may cause gravitational pooling in ...
Apr 27, 2012 ... What does "to this effect" in the following sentence mean? (This sentence ... However, if you are not successful, we will inform you to this effect.

Member States should approve Commission proposals to this end.
This provision amends the convention implementing the Schengen agreement and the so
Several initiatives were launched in 2002 and 2001 to this end.
The Commission may, to this end, submit proposals for the maximum amounts by...
called common manual to this end.
The Commission has not yet received any applications to this end.
A cohesive foreign policy is an important means to this end.
It is therefore appropriate to establish a programme to this end.