Helpful and great, but too expensive

Let me just start out by saying this: I am a minor. I dont have an income that I can rely upon, so I very rarely consider purchasing the "full" / "pro" / "premium" version. This is one of the few apps that I thought was worth my money, but then I noticed that it relies upon a subscription layout. I am too poor to pay for apps on a monthly or yearly basis. I was very excited to upgrade, but was then disappointed when I saw how expensive it would be for me. A shame, really, I ***really*** wanted to buy this.

If, however, this app was a ONE TIME CHARGE of, say, $0.99 - $2.99, I would definitely consider it to be worth my money. What a shame :(

Ninjabunny2001 about Productive - Habit Tracker, v1.5