Ive seen a lot of people jump into ML with flashy apps that dont teach the fundamentals correctly. In my experience, its better to stick with platforms that have a verified curriculum. For your commute, I recommend DataCamp Data Science App Premium. Its stable and the interactive Python exercises are great for learning Scikit-learn on a small screen. If you want to understand the logic behind neural networks properly, check out Brilliant.org Interactive Course Subscription. It uses a first-principles approach which is much safer for building a solid foundation than just memorizing code. Lastly, for deep dives, you cant go wrong with DeepLearning.AI Machine Learning Specialization Course. These are established names for a reason... they wont lead you down a path of bad coding practices. Always prioritize quality over convenience when it comes to technical stuff.

Tbh, SoloLearn Learn to Code Mobile App is a safe bet. Its free so you wont lose money. It handles Scikit-learn basics well enough for a commute without a pricey sub.

I'm gonna have to disagree slightly with the app approach. Honestly, most of those mobile apps skip the hard math you actually need for ML just to keep it fun. If you want something reliable, just look at EdX imo. Any course from a major university is gonna be safer than a game-like app. It saves money too if you just audit the lessons during your ride.

I have the exact same struggle every single morning on my commute. Trying to parse a technical PDF while the train is jumping around is basically impossible and honestly just gives me a headache. Like someone mentioned, you really have to be cautious about the quality of these apps because many are just shallow games that wont teach you actual skills. I have been trying to find more reliable, professional options for my own sessions. For a more stable and safe learning path, I have been looking at these lately:

• LinkedIn Learning Monthly Subscription because it offers very structured and vetted paths for machine learning basics.
• Enki App Pro Yearly which is quite decent for Scikit-learn syntax and general Python logic.
• Pluralsight Standard Monthly Subscription for its focus on professional reliability and technical depth. I am still trying to find a truly rigorous neural network app that works well without a constant signal, so I am right there with you. Just make sure to avoid the apps that focus more on flashy graphics than actual math... stay safe with the verified stuff.