FOURFOLD PLUS
Go deeper.
Keep your curiosity.
An optional monthly or yearly subscription for players who want more ways to study. Both plans unlock the same features.
| Feature | Free | Plus |
|---|---|---|
| The Lost Signal, Pawnie & basic lessons | Included | Included |
| Puzzle collection: 102 puzzles across five levels | A set of 3; next set the day after all 3 are solved | Unlimited access to every puzzle |
| Local & online games, replay, clocks | Included | Included |
| Existing lessons & Quick helper | Included | Included |
| Basic match analysis | Included | Included |
| Full helper: one possible reply | Feature preview | Included |
| Deeper match analysis | Feature preview | Included |
| New completed Study reviews | 1 per UTC day | Expanded access within storage limits |
| New personal practice exercises | 3 per UTC week | Expanded access within storage limits |
| Advanced 4D Academy | First exercise in each module | All advanced exercises |
| Study notes, titles & collections | Read existing saved work | Create and edit |
| Study activity insights | Feature preview | Included |
| Study game import, export & deletion | Included | Included |
Choose a plan in the app
Open Home → Fourfold Plus → Choose a plan, or use Settings → Fourfold Plus. The purchase screen shows your regional App Store price, billing period and any introductory offer you are eligible for. There is no payment or subscription checkout on this website.
Restore or manage your subscription
Use Restore purchases on the Plus screen with the same Apple Account used to purchase. Use Manage subscription, or Apple Settings → your name → Subscriptions, to manage renewal. Subscriptions renew automatically unless cancelled through Apple.
Deleting the app or your app account does not cancel billing. Saved Study work is retained if Plus expires, while access to paid features changes.
A second look, not a certainty
Full helper shows one possible reply. Deeper analysis uses a bounded on-device search. Neither guarantees the best move or predicts your chance of winning. Previewing a suggestion does not play it in your live game.
Purchase troubleshooting → · Apple standard license agreement