app development

How can I get a smartphone app written?

Episode 1158

Spivy from Attalla, AL

Spivy created a poker game for casinos and he wants to turn it into a smartphone app. Leo says that's a good idea if people like it. But if it's a betting app, with cash involved, Apple won't let him do that. But if it's just a fun game, then he'd just need to find a developer. There are a lot of places to go. eLance is a great place to find them and he can have people bid on the gig. Many are in Russia, India and Eastern Europe. It'll cost him less than he'd think.

What programming language should my kids learn?


Episode 1141

Doug from Orange County, CA

Doug wants to get a computer for his kids and teach them about technology, computers, and programming. His son is 18 and is thinking about a career in technology. Leo says that everyone has a favorite bias and language, and he guarantees that whatever he teaches him now, it'll be obsolete within a few years. It's better to understand how a computer thinks and keeping up to date on how the computer will change. Understanding and expressing problems in an abstract way that isn't specific to a set programming language is key.

Is there a cross platform app development option?


Episode 1116

Dave from Ayersville, OH

Dave is looking to get into App development. He'd like to make apps for multiple platforms, and wants to know if there's a cross platform environment that makes it easier. Leo says that developing natively is always the best option, but cross platform is very popular with developers who don't want to triple their effort. Different platforms use different languages, though.

What career in technology should I pursue?


Episode 1106

Janen from Sacramento, CA

Janen is looking to change careers, and wants to go into something more tech related. What will be the next biggest thing in technology in the next 10 to 15 years? Leo says that both robotics and biotech is going to be huge. Virtual reality is about to explode as well. Even app development has a lot of promise, even though most of the money is made by a small segment. Learning to code is really going to serve Janen well. The chatroom says that battery technology is great for those material engineers.

How do I make an app?

Episode 1078

Mike from Glendale, CA

Mike has an idea for an app, but doesn't know how to make it. Leo says that apps are like having gold in the hills. If he can get it made, that would be great. But he should understand that most apps don't make money and those that do are usually made by larger companies. It's easy to have a great idea, but there's a lot of distance to making the idea a reality and then making money off it. He can find programmers at or

If I rewind video on Netflix, is it re-downloading the entire movie again? (Part 1)

Episode 1044

David from Juniper Hills, CA

David wants to know if a streaming movie in Netflix would have to download all over again each time he'd rewind to rewatch a scene. Leo says that it depends, but if he's just rewinding to see a scene that he just saw, it won't have to redownload that. Netflix does cache the movie as it plays, but if he wants to go to completely different part of the video, it will probably have to download that part again.

Why won't the apps I'm developing work on the iPad?

Episode 929

Sam from Los Angeles, CA

Leo says Sam probably doesn't have the most recent SDK for iOS. He may have forgotten to provision the iPad beforehand, which is what the SDK does. Another possibility is that the certificate isn't attached to Sam's new computer.

In the chatroom, Web70 says he'll need to go to and revoke his current certificate. Then he needs to recreate a new one. That will fix the issue.

Are there going to be better apps available on Windows Phones?

Episode 919

Jim from Temecula, CA

Leo says that Microsoft has been slow in releasing the software development kit (SDK) for the Windows Phone platform and most developers are focusing on iOS and Android. So it's unlikely that the app availability will get any better any time soon. It would take at least a year to build up the app ecosystem. That's why Leo would advise making a switch to one of the other two platforms.