Walk Moscow, and the fog comes off street by street
FOG starts with the whole world hidden. Every street you physically walk in Moscow is revealed and stays revealed. No account, no cloud, no ads.
A city built as a wheel
Moscow grew outward from the Kremlin, so the plan is a wheel. Radial roads run out from the centre and ring roads cut across them: the Boulevard Ring first, then the Garden Ring, then the Third Ring further out. On foot that has one large consequence. Moving in or out is easy, because you pick a radial like Tverskaya Street or Pyatnitskaya and follow it. Moving sideways from one radial to the next is awkward, and you end up threading courtyards or looping back to a boulevard to get anywhere.
The scale is not built for pedestrians either. Eight lanes of traffic, blocks that run three hundred metres, and crossings that send you down into a tiled underpass instead of across a zebra. Every walk here is longer than it looks on paper.
An afternoon that clears a lot of ground
Start at Zaryadye Park on the embankment. Walk up through Red Square and along Nikolskaya Street into the tight lanes of Kitay-Gorod, then come out on the Boulevard Ring near Lubyanka and follow Rozhdestvensky and Tsvetnoy boulevards. The boulevards are the best walking in the city: trees down the middle, benches, and no need to fight the traffic.
Turn back south, cross the Bolshoy Moskvoretsky Bridge into Zamoskvorechye and work the side streets around Pyatnitskaya and Bolshaya Ordynka. Cross the river again at Krymsky Bridge into Gorky Park, carry on through Neskuchny Sad along the water, and finish by climbing Sparrow Hills. From the terrace you look back over roughly twelve kilometres of map you just lit.
Where the fog gets stubborn
Inside the Garden Ring the reward is high. Kitay-Gorod, Arbat and Zamoskvorechye are dense with small streets, so an hour on foot clears a satisfying amount of map. Push outward and it changes. The outer districts are microrayons: towers standing in shared courtyards, with few actual named streets between them. You walk just as far and light fewer lines.
Two honest notes. Underpasses and metro rides drop the signal for a minute at a time, so a long escalator can leave a small gap you will want to walk back over. And winter is a hard limit. From December into March it is dark by four and the pavements are ice under salt. People walk anyway, but you need boots and a shorter plan.
What the app is doing while you walk
FOG is a fog of war map. The entire world starts covered. The streets you actually walk are the only ones that clear, and they stay clear. It keeps working with the app closed and the screen off, so a normal Moscow day of metro and errands still counts.
Free to explore. One purchase of USD 5.99 unlocks unlimited ranks, every character and history import, with no subscription. Ranks climb with the area you cover, from Wanderer through Scout, Pathfinder and Explorer to Voyager. For any city you have walked, FOG shows what percentage of it you have lit. There is also a collection of 241 countries, 3,390 regions and 7,342 named places, and the only way to add one is to stand in it.
Nothing leaves the phone. No account, no sign-up, no cloud, no analytics, no ads, no tracking. You can export your own data whenever you want.
Questions people actually ask
Does FOG work on the Moscow metro?
Underground you lose the signal, so tunnel sections do not reveal. What you walk above ground before and after each ride is recorded normally. If a gap bothers you, walk the surface stretch once.
Can I import walks I have already done in Moscow?
Yes. History import is part of the one-off USD 5.99 unlock and reads Google Timeline exports and GPX files, so years of past movement can be burned into the map at once.
Is Moscow realistic to fill in on foot?
The centre inside the Garden Ring is very doable over a season. The whole city is not. Moscow is enormous, so most people work outward ring by ring and watch the city percent climb.
Does it drain the battery in winter?
Background exploring is built to run all day, but cold weather shortens any phone battery. On long winter walks people usually carry a small power bank.
Do I need an account?
No. There is no sign-up, no cloud and no tracking. The map lives on your phone and you can export it.
Start with a dark map.
FOG is free to explore. No account, no subscription, and your map never leaves your phone.
free to explore · one purchase unlocks everything · never a subscription