It's great to know that you are interested in vidIQ, which is a powerful tool for YouTube creators to optimize their channels and grow their audience. Unfortunately, there is no option to sign up for the paid plan without a valid credit or debit card, even for the trial.
However, the free version of vidIQ still offers valuable tools to help you with your YouTube channel. Here are some features that you can access using the Basic (free) version:
Optimize: Optimize one of your YouTube videos with a better title, description, tags, and even a thumbnail generated for you.
Create: Get up to 3 blueprints for your next videos based on ideas that have the potential to perform well.
Learn: Get access to all our lessons that teach you how to reach new viewers and grow your channel.
AI Chat: Ask unlimited questions on our basic AI Chat that can help you with all questions related to your channel.
In addition to using a valid credit or debit card, you can also upgrade your vidIQ subscription via the Google Play Store and Apple App Store. Each of these options provides a convenient and secure way to pay for your subscription.
For more information on the payment methods supported by vidIQ, please check out this helpful article: Which payment methods do we support?