When comparing Modulus vs Back4App, the Slant community recommends Back4App for most people. In the question“What are the best hosting services for Node.js apps?” Back4App is ranked 3rd while Modulus is ranked 7th. The most important reason people chose Back4App is:
The user is not a hostage and can migrate the application to other hosting service whenever they want.
Ranked in these QuestionsQuestion Ranking
Pro Great support
There are a number of ways available to contact their support team (email, twitter, IRC and even through phone). They usually respond very fast even to emails and the responses are very friendly and helpful.
Pro Great support for Meteor
Modulus has a tool called
demeteorizer which takes a standard Meteor application and turns it into a regular Node application so that it can run on Modulus.
Pro Open source
Back4app is an open source BAAS and Backend generator.
Pro Smooth migration from Parse
Back4App offers a smooth migration for all former Parse users who wish to migrate their data now that Parse has announced that it will stop soon.
Con Slow deployment process
The deployment process in Modulus can be slow depending on the size of the project. On every deploy the whole application is bundled (except
node_modules and deployed to Modulus. Since it doesn't use something like git it has to upload every file on each deploy instead of "diffing" them.
Con Uses MongoDB for the backend, which is not considered very safe by many
Back4App uses MongoDB as the database where data is stored. Mongo has been known to have issues with data corruption and data loss.