PeppolSoft
7.9#2 in electronic invoicing softwareFrom $1,200 a yearFree planAndroidiOSWebAPI
VisitPeppolSoft suits businesses that need to send or receive electronic invoices on DBNA or OpenPeppol. Its plans are segmented by company size, from microenterprises and individuals to large companies.
You want what its maker publishes above — check its page for the details.