Respectfully, I have read that lterature, is is the very reason why I am asking this question.
Trust in a product comes both from the quality of the application and the pricing model. Your model, I agree, is a fresh look at how people pay for a product, but I have to be honest it looks flawed with the potential to come and bite you on the ass later. We are all aware how users hate it when software they have grown to love disappears because the pricing model failed.
I agree that not all features are equal. But, going back to your new computer analogy. Agenda is being sold as a product - pay the price, get the existing features forever. However, over time you intend to improve that product.
Now, under your model, as that product improves your asking current users to pay for it over and over again as it improves (albeit with a 12 month free update period). Whereas a future purchaser gets the improved model for the original price. I’d love to buy an iPhone X at the cost of the original iPhone.
Now, this is what I am trying to clarify. Do you intend to increase the price as it becomes more feature rich? If so, how will existing users not be penalised by that increase - considering they already ‘own’ many of the original features?
If you mean for the price to stay the same (basically a subscription) how will you ensure that the price continues to reflect the value of the product? In other words, can you justify the price in relation to the new features coming out? After all you will reach feature saturation at some point and then, under your model, people will just stop buying.
Do you see my point? When Agenda has all the features people want, or you can provide, your cash flow stops.
Buying a product differs from buying a service. Subscription models for services mean that a reasonable price is paid on a regular cycle and all improvements are covered in that cost. Even when features stop getting added, a revenue stream is continued to ensure product support, and that is when you as developers, realy make the big money.
Compare your model to one of the best pricing models, OnePassword, You can buy the product once, not on a cycle. All minor updates are free, any major ones (new realeses) the current users get a discount. You also have the option to subscribe, to get all updates, including major ones, continuously. Honest subscriptions are good because they ensue your ability to sustain development.
I have trust in your product, but I sincerely believe your pricing model needs to be rethought. It is beautifully simple, but prerhaps too simple.
I will be buying Agenda as it suits my needs. Will I buy it next year again? I’m uncertain, and that is not a position you want consumers to be in if you are looking for regular sales.
Would I purchase it at £24 then pay a yearly subscription for say £12 a year? It’s more likely I would to ensure new features and support.
Only trying to help.