Hi Ary,
Here's my first response. I'll continue to modify it by adding more references.
I already discussed with you about comparing CSPro to Survey Solutions. Since, CSPro erased almost all Survey Solutions advance, except for CAWI.
However, Since Survey Solutions take the ODK1 way (not based on a true and transparent programming language and a compiler), it can't improve itself to be competitive regarding to CSPro. So The future is for CSPro.
Regarding ODK, they decided to move to ODK2 (ODK-X) who's based on Javascript-HTML. This, because they conclude that no serious CAPI without strong programming. However, compare to ODK-X, CSPro is far more powerful, far more productive.
Until now, among others CSPro unique advance, no know free CAPI systems support SQL language or parse questionnaire data in a relational schema on device and on server.
Here's some formal comparison reports:
https://documents1.worldbank.org/curate ... ations.pdf
https://parstat.md/wp-content/uploads/2 ... db0&189db0
Please note that the World Bank is very old (a decade ago). More it concerned a defunct CSPro commercial version: CSPro-X from Serpro.
Asia Development Bank announced a CAPI software comparison studies. But, i don't have access to results. You can contact them directly for.
In the meantime, here's a report where you can gather somes informations : CSPro Vs Survey Solutions
https://www.adb.org/sites/default/files ... urveys.pdf
Right now, the greatest weakness of CSPro is the lack of CAWI. But, it's a time question before having it, since the Developer Team already accept the principle. In the meantime, independent developer are trying to overcome this limitation. Please see and test this :
https://github.com/parstat/cspro-cawi/
For a better report, i suggest you to wait for the next beta 7.7 with it's plentiful of new features such as map dashboard etc.
They way following by the CSPro Developer Team is the future. Among other possibilities, if Savy, the CSPro Chief, approve it, in the future CSPro can give NSO or any institutes a way to output standalone survey apps (Windows or Android) where they can use theirs names and logo...
Best,