Optimizely for iOS vs. Taplytics vs. Vessel

Make visual changes to your app on the fly using Optimizely's code-free visual editor. Push changes to the app without waiting for App Store review.

Taplytics is a mobile A/B testing service for native apps. By integrating our small SDK in you app, you can run experiments and deploy them to your users without requiring an App Store Update

A/B testing with Vessel allows you to deploy any test instantly. You have complete control over each part of the process - from color to messaging to test group size. Vessel offers deep level real-time monitoring so that you're able to learn everything there is to know about user trends and how to increase retention. Each test you deploy will end up with a winning variation.