When I use the price string from the API, we see 12.99 like we have in the Apple app store. However, when I access the price itself in the Flutter client library, I see 12.989999771118164. I am not manipulating this price at all, I am printing it directly from Flutter lib. Do you think this is: 1) Apple weirdness 2) RevenueCat API bug OR 3) Flutter bug?
Answer
Prices off by 1 cent (ish)
Best answer by ryan
This is due to the nature of floating point decimals. More info in this Stackoverflow post here: https://stackoverflow.com/questions/21895756/why-are-floating-point-numbers-inaccurate
Rounding the float to 2 decimals should land you with the correct formatted currency. There may be some enhancement we could do in the SDK to improve how these are displayed.
This post has been closed for comments
+9This is due to the nature of floating point decimals. More info in this Stackoverflow post here: https://stackoverflow.com/questions/21895756/why-are-floating-point-numbers-inaccurate
Rounding the float to 2 decimals should land you with the correct formatted currency. There may be some enhancement we could do in the SDK to improve how these are displayed.
Rounding something like 5.999 even to 2 decimals takes you to “6” so it won’t always work. Maybe in this case though
+9Rounding something like 5.999 even to 2 decimals takes you to “6” so it won’t always work. Maybe in this case though
I don’t think you would run into that, since $5.99, converted to a float should still round back to $5.99. If it was $6.00 then you could see a case of 5.9999 or 6.0001.
+4I’m 3 years late, but a search showed this thread.
I have more or less the same issue. My 19.99 subscription shows as 19.98999999… I know about the float issue, but how can I fix this?
I found this, but how is it used?
https://github.com/RevenueCat/purchases-ios/pull/4132
Thanks,
+4I expected a RC method to do this. Didn’t find anything (probably because there isn’t such a thing). I did it manually inside the offerings section of my code:
let formatter = NumberFormatter()
formatter.maximumFractionDigits = 2
formatter.minimumFractionDigits = 2
formatter.numberStyle = .decimal
...
let price = formatter.string(for: product.price)!
+6Hey
The GitHub PR that you linked is specific to our Paywalls feature, so may not be relevant if you are formatting your own custom paywalls.
It sounds like you may already have a solution, but the StoreProduct class in our iOS native SDK does have some properties that provide a formatted and localized price. You can find more info about these properties in our SDK reference here: https://revenuecat.github.io/purchases-ios-docs/5.6.0/documentation/revenuecat/storeproduct
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.