タンサク - 歩くと霧が晴れる探索マップ。散歩・旅行を楽しむ

WorldTrace - Walk More, See More. Your Personal Fog-of-War Map.

We live in an age where you can look up anything before you arrive. Street views of cities you have never visited. Reviews of restaurants you have never tasted. Information is everywhere, and yet something feels missing.

When was the last time you looked up from your phone and noticed the street you were walking down?

WorldTrace was born from a single, quiet realization. During a trip abroad, the creator found that despite taking hundreds of photos and checking dozens of recommendations, the memories felt strangely hollow. Each place was reduced to a brief stop between phone screens -- a thumbnail in a camera roll rather than a lived experience. The journey itself, the walk between destinations, had vanished entirely.

That realization became this app.

WorldTrace is disarmingly simple. When you open it, the entire map is covered in fog. You cannot see anything. Then you walk outside, and the fog begins to lift -- but only where your feet have carried you. Over days, weeks, months, a map emerges that belongs to no one else. It is a quiet record of everywhere you have been, drawn not by your fingers but by your footsteps.

Andre Gide once wrote, "Put down your books and go out into the world." Today, he might say: put down your phone and go out into the world. Not because phones are without value, but because knowledge that never passes through your own body remains someone else's knowledge. The texture of a cobblestone street, the unexpected turn that leads to a hidden garden, the way light falls differently in a neighborhood you have never explored -- these things cannot be looked up. They can only be lived.

How to use WorldTrace:

Open the app. Put your phone in your pocket. Walk outside.

That is all. No interaction is needed while you walk. GPS quietly records your path in the background. When you return home, open the app again and watch the fog recede along the routes you traveled. Over time, your personal map grows -- a visual diary of your relationship with the world around you.

Features:

Automatic tracking. WorldTrace records your movement using background GPS. You do not need to keep the app open or interact with it while walking.

Manual drawing. For areas with poor signal -- underground passages, dense urban corridors, indoor markets -- you can reveal the map by hand.

Map pins. Drop pins at places that matter to you, with photos and notes attached. Not every memory needs a social media post. Some are just for you.

Level system. As your explored area grows, you earn titles that reflect your journey. A small, gentle motivation to keep walking.

Step counter. Integration with the Health app lets you see your daily steps alongside your map progress.

Customization. Choose fog colors and map styles to make the experience your own.

Who WorldTrace is for:

People who want to build a walking habit but find fitness apps too focused on performance. Travelers who want somet