I have tried a lot of android tsumego apps and this one is simply the best, by far, for what I'm looking for in such an app. And I'm not saying that because I'm french too

Let me explain why (in bad english sorry).
The first thing I appreciate is the rating that the app is given us when doing some random tsumegos and then auto adjusting the difficulty of the tsumegos. It's the way tsumegos become entertaining for me.
(some Chess apps do the same with some specific Elo ratings for problems but it's very rare in go).
I'm not sure if this rating is very accurate or not but it doesn't matter a lot in fact, a rough estimate of my level is enough. We can select some difficulty level or theme to work with.
It would be even nicer if Tsumego Pro would include the challenge mode that Elygo have (with some improvements) : I would like to be able to set a x minutes session of doing tsumegos or to set a time session (let's play 30 tsumegos each day or resolve tsumegos for 20 minutes for example). With a history of the scores and time spent each day it would be awesome (Tactic Trainer in chess
https://play.google.com/store/apps/details?id=com.thecvsi.tactictrainer&hl=fr tracks history and progress in a nice way).
I also like the 6 daily problems that Tsumego Pro is loading each day : it's a nice way to commit us to do some more.
At this point of development the only real feature that I'm missing a lot is the (non) ability to mark some problems as favorites and put them in a specific group.
Another improvement, as already said, would be the analyse mode (but I really like the fact that no solution is given in ranked tsumego).
I would also like a level 0 tsumegos for learning the rules of go and with very easy problems for the kids and the beginners because that's the way I teach go for the beginners and it's a killer (kids love to do some simple and progressives tsumegos on the tablet).
Beginners section of Gochild site is just perfect for example (
http://gochild2009.appspot.com/ , all the site is great btw).I am not sure if, at the moment, Tsumego Pro is able to handle some longer questions (how to capture the 2 white stones instead of black to play for example).
Let me recap theses suggestions in (my) order of priority :
-ability to mark favorite problems and put them in a pack to be able to work on
-challenge mode of Elygo with time session and number tsumego session with scores history
-tracking of time spent each day solving tsumego (time/numbers)
-level 0 pack for beginners
-analyse mode
-a check mark on the daily tsumegos when we have resolved them
-achieve section (cf Tactic Trainer for examples)
-more tsumegos pack with themes
-ability to load personal tsumegos
-a widget for the daily tsumego as suggested before
-english translation of the app
-quick help file to remember what the rank of the levels problems are and meaning of the categories (Facile seems include basique and elementaire for example)
-exit button
Some of these could also be paiements options (analyse mode, widget) if it could motivate the developer

Thanks for this great app.
Buck Rudder, first post on this great forum but reader since GoDiscussions