No ads, on any plan
DevDeck carries no advertising anywhere, and there is no ad-supported tier to opt out of. A tool people open specifically to concentrate is the wrong place to interrupt them, and an app that sold your attention would be arguing against its own product.
What the free tier includes
Two projects and one connected repository — synced, like everything else. The ceilings are what the free tier withholds; the capability is not. A free account gets real sync, real GitHub linking and the full planning model, just fewer things to point them at.
Two projects is not an accident either. It is roughly where the work-in-progress argument lands for someone trying the app out.
Everything. No purchase is offered in this build, so every feature is available and no ceiling applies.
What Pro adds
Unlimited projects and repositories, calendar sync, plan-vs-actual analytics and release-notes export. The current catalogue is served by the app rather than fixed in the build, so what is included can change without an update.
Buying, restoring and cancelling
Purchases go through Google Play, which shows plans, prices, renewal dates and cancellation. DevDeck never sees or stores a card.
If you are signed in, Pro follows the account: sign in on a new device and it arrives on its own. If a purchase completed but the account has not picked it up, "Restore purchase" in Settings asks the store to replay what you own.
Pro is enforced on every supported platform, while checkout availability is separate. If the current platform cannot complete a purchase, buy Pro in the Android app and sign in here with the same DevDeck account; the account entitlement comes with you.
Where it stops
Nothing you have already entered is taken away by a plan change. Reaching a ceiling limits what you can add next; it does not delete or lock what is already yours.