When comparing NativeScript vs Telerik AppBuilder, the Slant community recommends NativeScript for most people. In the question“What are the best frameworks for developing cross-platform mobile apps with JavaScript?” NativeScript is ranked 5th while Telerik AppBuilder is ranked 18th. The most important reason people chose NativeScript is:
Used by Svelte framework for native development.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Svelte Native
Used by Svelte framework for native development.
Pro Leverages knowledge in Angular
Angular is a very popular framework, and teams already developing angular will feel right at home with Nativescript + Angular
Pro Works great with vue.js
Pro Plugins for popular IDEs
Telerik provides Visual Studio and Sublime Text plugins for the AppBuilder.
Pro Integrates with Apache Cordova
AppBuilder offers a fast way to import Cordova plugins such as the camera.
Cons
Con Nativescript + Angular apps for Android tend to have long startup times.
It's very difficult to have acceptable startup times with NS+Angular in Android. It's not uncommon to see apps taking 6 sec or more to start AFTER having been optimized with Webpack (mandatory!). The same app in iOS takes only 2-3 sec. Also, this seems to happen only with the NS+Angular flavour. People using plain NS (without Angular) don't seem to have the issue.
Con Young project with a small community
AppBuilder is a young project that's been fairly slow to gain popularity. This means the community is rather small, so there is a limited amount of 3rd party learning resources available.
There is a forum, but it's not very active.