This is very pendantic I know but in your demo video the line 'They all have tons of features that Emily don't need, all she needed the most is a CRM with attendance records' would be more correct English if it read:
'They all have tons of features that Emily doesn't need, all she needs is a CRM with attendance records'.
In any case, the concept sounds good and is otherwise well presented.
Front page grammatical issues:
"Most of the apps in our library is free" should be "...are free"
Anyway I haven't tried your products, but I'm very positive about what you're trying to do. The HN community is so comfortable with programming that they'll connect less with the value of this concept than many, so take their comments with a grain of salt. For the countless people out there who feel constrained by their knowledge of spreadsheets --- useful but limited in scale --- this could be very useful, if done right
Ragic Builder features page has a few mistakes in the feature banner. Fixes in  below:
DB Apps. Exactly [what] you need. Now.
Businesses don't need hundreds of unneeded* fields and functions that [are] suppose[d] to cover the need[s] of every company. Ragic delivers your DB apps exactly [the] way you want, fast.
* unneeded isn't required here since it's already implied that these fields and functions are unneeded when you say "Businesses don't need.."