Paid for app, now I have to buy a subscription – Informant 5 Calendar Review

I paid for the app, used it, and liked it. But with latest upgrade, I am locked out of my old data and can’t access it without a paid subscription. No warning. It’s like ransomware, pay us or lose your information. No serious business treats their customers this way.
Review by Sophisticated Critic on Informant 5 Calendar.