Like someone mentioned, mobile is definitely a challenge for deep dev work, but its perfect for theory. In my experience, if youre on a ten-day sprint, you have to hit the math and the logic hard. Ive tried many of these over the years and most people fail because they focus on code but dont understand the math. Heres what Id grab for the train:

• DataCamp Interactive Mobile Course Subscription
• Their mobile interface is actually designed for phones, not just a ported website. Its great for drilling the basics of Python and data science logic.
• Khan Academy Mathematics and AI Mobile Platform
• This is non-negotiable and its free. Use it to brush up on Linear Algebra and Calculus. If you get asked about gradients and you blank, the interview is over.
• OpenAI ChatGPT Plus Monthly Subscription
• Use the voice feature for mock interviews. Seriously, tell it to act like a senior ML engineer and grill you. Its the fastest way to get comfortable talking about tech. Tbh, since your budget is tight, stick to the free stuff on Khan first. The most important thing is being able to talk through the concepts clearly. Dont worry about being a perfect coder on a 6-inch screen... just make sure you understand the why behind the models. Its gonna be a rough ten days but you can pull it off.

Honestly, if youre stuck on mobile, check out Coursera Plus Annual Subscription. Their app is actually decent for watching lectures and doing quizzes on the train. Also, definitely try Enki AI and Data Science Mobile App because its built for quick sessions. Focus on the core concepts like machine learning basics. Its way better than just scrolling. Good luck with the interview!

Regarding what #3 said about "Honestly, if youre stuck on mobile, check out..."

• I agree, Coursera is a solid bet if you have the funds. But if you're really pinching pennies, there are free paths that are just as reliable for a quick sprint. I've used AnkiDroid Flashcards for years. It's great. Since you've only got ten days, you need to drill those core AI concepts like backpropagation and cost functions until they're second nature. This app is free and works offline. Perfect for the train. Also look at Mimo Learn to Code App for the coding side. It's way more modern and stable than the stuff you checked earlier. The lessons are bite-sized so they fit a commute perfectly. It won't replace a real laptop setup, obviously, but it keeps your head in the game. Just keep at it... ten days is tight but doable if you're consistent.

Ten days is a very constrained timeline, so you need a high-density learning path. From my experience, Brilliant.org Premium Subscription is the most technically accurate mobile option. Their modules on Neural Networks and Logic are rigorous and emphasize the mathematical foundations that interviewers look for. Its honestly way more effective than passive video platforms because it requires active problem-solving. If you need to test actual code snippets on your commute, Pydroid 3 Pro IDE is basically the standard for mobile Python. It supports NumPy 1.26.0 and Pandas 2.1.1 libraries quite well. Focusing on the backpropagation and gradient descent visualizations will give you a better technical foundation than memorizing outdated snippets. This approach ensures you understand the underlying architecture rather than just the high-level theory... definitely better for a crunch period.