Contact the desk
Corrections, disagreements and anything a vendor has quietly changed since we last looked. All three are welcome, and the first one is the most useful.
Write to [email protected]. It goes to a person, and a correction will normally be acted on within a few days.
What is most useful to send
A figure that has changed. Vendors update pricing pages without announcements, and the fastest way a page here becomes wrong is a plan quietly restructuring. If you have seen a different number on a vendor's own page, send the page and we will re-read it.
A mechanism we have described wrongly. If you run one of these platforms daily and something on this site does not match how the meter actually behaves, that is worth more to us than any amount of documentation.
A disagreement with a rating. Ratings are judgement applied to evidence, and reasonable people land differently. If you think a score is wrong, the argument is welcome — particularly if it names the criterion in how we judge you think we weighted badly.
What we cannot help with
We cannot debug your application, recommend a platform without knowing your data and your audience, or tell you what your app will consume. The last one is not modesty: nobody can, which is the point made throughout this site.
For the general version of the question, the best no-code app builders sorts the four by the shape of application they suit.
Vendors
If you work for one of the platforms covered here and something on the site is factually wrong, please say so with a link to the documentation and it will be corrected promptly.
Programme enquiries are fine to send, but they do not affect a rating and never have. The arrangement is described in the affiliate disclosure.