It's not "free" in the sense that there's a download button for it. 99.9% of the people wouldn't be readily able to build the app from source.

Given I've spent 3 years building it, I feel comfortable selling it for this price. When I first released the app I didn't have the source code available; so it's more like a "commercial product" with the source code available if anyone is interested.

Oh I see, yes I was a little curious that product source code is available and I wonder why people are still paying for the product but you just made it clear with your answer

thanks man !!

Have you ever thought about charging more?

It's scary. I sell about 120 copies per month. I suspect charging more will drop it down to fewer than 100 copies. I'd rather more people use the app.

I will be working on adding facial recognition; I might have a pricier option for facial recognition features perhaps.

I've never had the experience of pricing a product, but my intuition tells me this could be a win. We occasionally see articles on HN that describe how to increase prices without losing your audience.

Perhaps there are others here that can offer feedback and advice.

Research and experiment. If you do embark on this, a postmortem write-up with your learnings would be a great read.

Best of luck with whatever your plans are. It's a cool app!

Thank you! For the reference, until I released version 3.0.0 (last November) the price was $3.50 (and all of it went to charity). The number of sales didn't take a hit - but it coincided with some publicity and major improvements to the app.

Great App!

Just purchased 2 copies cause I am lazy building it from source & cause charity, why not!

Tested the demo about 1 hour ago and I was impressed. Very good UI and fast scanning, although on the icons are a bit on the small size for my taste but excellent otherwise.

Keep up the great job :)

Thank you! In the settings (scroll to the bottom) there is a "-" and "+" between "reset zoom" button. That will help you adjust icon size and text across the app. Great for a 4K TV.

How do you collect the money?

I use https://chec.io/ checkout process (a service) which uses PayPal or Stripe for processing payment (it allows more payment types but these are the only two I use).

The charity aspect is a strong motivator for many people.

Maybe George Costanza's idea -- The Human Fund, Money for People -- needs to be revisited.