When comparing Kumulos vs GraphCMS, the Slant community recommends GraphCMS for most people. In the question“What are the best alternatives to Firebase?” GraphCMS is ranked 13th while Kumulos is ranked 14th. The most important reason people chose GraphCMS is:
Webhooks enable you to trigger custom code as soon as your content changes.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Good for mobile app development companies
Scales very well and useful console to view all their apps and its fully rebrandable which works great if you want to give the clients you are building apps for access to their own view of how it is performing. The fact that it comes with integrated push notifications and their automated monthly report is also great.
Pro Granular permissions
For companies or large teams of developers, where there are multiple projects being worked on at once, you can choose permissions for any developer and decide who gains access to each app on the backend.
Lets you rebrand the system, which works well if you want to give the clients you are building the app for access to their own view of how their app is performing.
Also like the fact it comes with the option of integrated push notifications and an automated executive summary report.
Pro Awesome support - a rarity these days. A support team that answers your questions and you can actually talk to them.
Have found response times to be pretty amazing, usually same day, often within an hour of logging a ticket.
Pro Multiple Services in one place
Having Crash, Analytics, Push, Content Management, ASO, Data Storage all in one place, from a single SDK

Pro Webhooks
Webhooks enable you to trigger custom code as soon as your content changes.

Pro Image processing
On-the-fly image transformations, such as resizing or cropping just by adding parameters to your media´s URL.

Pro Roles and permissions
The roles and permissions feature allows you to assign your collaborators different roles, such as Developer, Editor and Collaborator.

Pro Multi-project management
You can manage multiple projects and create up to 50 users per account to help manage those projects.
Cons
Con Weak documentation
In the last year they launched a dedicated Docs site that has made this a lot better. https://docs.kumulos.com/
Prior to that Kumulos was lacking in the documentation department. A lot of things are explained in just a few sentences.
Con Not open source

Con No content versioning
