TrueCost calculator
A $300 phone isn't cheap if it stops getting security updates next year. TrueCost divides the price by the months of support a phone has left, giving you the real cost per month of safe use — the number that decides whether any phone, new or used, is actually a good deal.
Enter a price and a support-end date to see the cost per month of safe use.
TrueCost = price ÷ months of software support remaining, from the live date. How it works.
Checking a used phone?
Pick the model, then replace the price with what the seller is asking. We'll compare that cost per month against phones in the same price band that are still supported — so you can tell at a glance whether the deal is great, fair, or a trap. A used flagship at a tempting price often costs more per safe month than a new mid-ranger, and this is the fastest way to see it.