Constant Variables

Constant Variables
Constant Variables is a show where we take a non-technical look at iOS and Android app development. We help non-technical co-founders of mobile app products become more comfortable with technical jargon and concepts in order to help them turn their ideas into successful apps.
15: Chris Ruff - Location Tracking in On-Demand Mobile Apps
Jun 8 • 30 min
Tim interviews Chris Ruff of Glympse who explains how location-tracking works in a mobile app and how you can securely & accurately provide a service provider’s location to your customers.
14: “Hot Lou” Abramowski - Using Facebook to Build Your Business
May 25 • 72 min
Tim interviews “Hot Lou” Abramowski of Evergreen, who gives practical advice for both running a business on Facebook and marketing your mobile app with Facebook Ads.
13: Kindu - Getting Hundreds of Thousands of Users with Zero Marketing
May 11 • 51 min
Tim interviews Tom of Kindu, who shares how he developed a mobile app which attracted hundreds of thousands of users with no previous development or marketing experience.
12: Jonathan Richter - Practical Tips for App Development
Apr 27 • 52 min
Tim interviews Jonathan Richter of Winnona Partners, a mobile app consultancy, who shares the lessons he’s learned around the business of app development which you can apply to your own iOS and Android projects.
11: Kwikly - Starting a Mobile App Without Technical Experience
Apr 13 • 29 min
Tim interviews Pedram Nastaean and Yomiyu Hirpa of Kwikly, an on-demand dental staffing agency, who share how they were able to launch a mobile-based company with minimal previous technical experience.
10: Explaining Common Mobile App Terms
Mar 30 • 24 min
Mobile app developers throw around a lot of jargon and buzzwords, but you don’t need to fear them! In this episode, Tim and Rob explain several common acronyms and terms you’ll hear when working with a development team.
9: Is Your App Idea Good or Bad?
Mar 16 • 13 min
Validating an app idea requires objectivity, introspection, and a bit of blind faith. Tim and Rob discuss three metrics they use when approached to determine whether or not it would make a good mobile app. In this episode, you will learn: Why you…
8: Lessons Learned While Releasing Our Own App
Mar 2 • 17 min
Even though we get paid to release apps for our clients, it has been a while since we’ve built and released one of our own. In this episode, Tim and Rob discuss the recent release of, a new Minnesota brewery tracking app. In this episode,…
7: The Server
Feb 16 • 15 min
Most mobile applications (especially on-demand apps) require a server to keep everything running smoothly. In this episode, Tim and Rob explain what a server is and the role it plays in your mobile software system. In this episode, you will learn: …
6: Solving the Chicken and Egg Problem with On-Demand Mobile Apps
Feb 2 • 12 min
When building an on-demand app, who do you try to get on your platform first: customers or service providers? In this episode, Tim and Rob suggest 7 techniques you can use to sustainably grow your on-demand app. In this episode, you will learn: How…
5: What Goes into an On-Demand App Tech Stack?
Jan 19 • 21 min
On-demand apps like Uber and Postmates are among the more technically complex apps you can build. In this episode, Tim and Rob explain how these apps work in an easy-to-understand way. In this episode, you will learn: How your mobile apps allow users…
4: Should you Build your Mobile App for iOS or Android?
Jan 6 • 14 min
A common way to cut down on mobile app development costs is to only build out one platform at a time. Tim and Rob explain the advantages to building on either iOS or Android, and provide tips for choosing which platform is right for your product. In…
3: Revenue Models for Mobile Apps
Dec 22, 2017 • 22 min
Tim and Rob discuss the pros and cons of 5 popular revenue models for mobile apps. In this episode, you will learn: The true cost of a “free” app The reason why the traditional “paid” app model doesn’t work well for mobile apps Why “freemium” apps…
2: 10 Technologies To Watch Out For In 2018
Dec 6, 2017 • 37 min
Tim and Rob discuss how 10 mobile-related technologies will evolve in the year 2018. In this episode, you will learn: How artificial intelligence isn’t exactly Skynet What on-demand apps will deliver to our doors Why 2018 may be the year our parents…
1: How Long Does It Take to Build an On-Demand App?
Dec 6, 2017 • 30 min
Tim and Rob take a shot at answering the oldest question in software development: how long does it take to get an app shipped from scratch? In this episode, you’ll learn: What exactly is an “on-demand app”? The actual time in months that it takes on…