To start with app development, you need to create a trial account at Freshworks website with one of the available plans.
The duration of the trial plan can be extended for as long as the app development goes on.
To extend your trial account, send an email to firstname.lastname@example.org along with the product instance domain. You can also obtain a suitable plan to utilize most of the product features during app development.
With a suitable product plan, you can explore the Freshworks products and utilize the product features and APIs for your app development. In addition, you can test apps by publishing them as custom apps.