Chose Read&Write
Read&Write has the benefit of better word prediction than Helperbird. The word prediction is not as good as Co:Writer (due to volume of topics and web-scraped topics, and iPad app), but Read&Write killed Co:Writer so it is not a competitor anymore, unfortunately. I would choose …
Invited by the Vendor
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info