Inside the app
A closer look.






About this app
Made for a clear purpose.
Contourfall: Terrain Puzzle is a focused, fully on-device app. A quiet route-planning puzzle built from real contour logic: read slope, saddles, ridges, drainage, exposure, and limited stamina to guide expeditions home.
KEY FEATURES - Tap adjacent contour cells to draft a route and see cumulative cost immediately - Close contour spacing raises grade, fatigue, and descent risk - Ridges, saddles, streams, cliffs, and weather alter legal movement - Optional survey marks reward accurate elevation and bearing estimates - One hundred authored sheets, daily expeditions, and free-map mode are included - 100 complete campaign trials - Original offline fieldbook and audio cues - Local progress and records with no account
ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface
Contourfall is a fictional entertainment game. Its rules, scoring, physics, maps, evidence, and terminology are designed for play and are not professional guidance.