Discovera · field companion for detectorists
An old map settles over today's field, and where there is meadow now a vanished village shows through. Discovera is for people who walk with a detector and for people who simply want to know what stood here: archive maps and wartime aerial photos over satellite, finds with their own story, and analysis — offline, in one app.
What Discovera is
Historical map overlays, find analysis and a clan — everything one outing needs.
Archive maps partner
Etomesto archive maps are already integrated into Discovera workflows: find the right sheet fast, add it to your field set, and keep moving without jumping between services.
Open etomesto.comAerial archive · Luftwaffe / NARA
German Luftwaffe aerial recon from the US National Archives is already in Discovera. Most frames are partially georeferenced — you only need to place three anchor points on satellite imagery.
Source: US National Archives (NARA)
Archive near you
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Searching archive maps near you…
Historical maps up to 1945
Aerial photography
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Maps
Archive sheets align with today’s terrain so you can compare eras at a glance. Add your own scans where licensing allows—in Discovera, layer opacity works like the slider here. This is a static preview, not a live map.
And when you do not know the place at all, set a radius around a point and run a history scan: the app gathers the historical sites that fall inside that circle, each with coordinates and a route to it. You can narrow it by era and by what you are looking for. The scan is rate-limited — it is reconnaissance, not an endless sweep.
Map UI
Three tabs cover how the map looks, what draws on top and how you manage tracks—without buried toggles or extra screens. Reading the sheets themselves: old maps, the language of the symbols: topographic map symbols, and checking the fit: seven overlay checks.
Profile
Add your machines and field kit, keep everything in one Arsenal tab, then compare models in the catalogue side by side. When you pack for a hunt, Ivanych is on tap to talk coils, specs and what actually makes sense on that soil—not generic forum guesses. What a beginner should buy: choosing a metal detector.
New · Sentinel-2 satellite
Trace a field with your finger and Discovera starts watching it from orbit. Sentinel-2 passes over every field once in 2–3 days, and the image answers the only question that matters before a trip: is the crop still standing, is it harvested, or is the soil already turned? The moment it is harvested or ploughed, you get a notification — no more scouting drives. How to work the field once you are there: search methods.
Under the card runs a strip of dates: 08-01, 08-03, 08-05, 08-11, 08-13. Page back through them and watch the season change. Every date is a real Sentinel-2 frame from that day, not an illustration.
10 metres per pixel: field shape, ploughing, stubble and regrowth. Machinery, wheel ruts and people are not visible, and we do not pretend otherwise.
Cloud swallows a pass now and then, and that is fine: a field changes more slowly than the weather. The card states plainly how much of the field was visible that day.
A watched field is 5 coins for 30 days, up to 10 fields at once. A field image is 3 free per day, then 5 coins — and once you have opened an image, it stays free for good.
Data: Copernicus Sentinel-2 · Contains modified Copernicus Sentinel data 2026
AI in action
No separate apps to install, no hopping between a chat, a forum and a catalogue — analyse, dig deeper and restore right inside Discovera. Worked examples: AI cases in the field. And when the AI does not convince you, a find can go to a person: pick an expert or leave the request in the open queue. Experts are made at level 15 with a verified history of finds.
Picks the right detector and coil, reads signals with you and reminds where to come back.
Identifies material, period and a rarity score from a photo plus the context of the site.
Tap a symbol you cannot read on an old sheet and get the cartographer's dictionary, an analysis, a search method and a prospects score. 10 coins; the result arrives as a notification.
Pulls detail from under patina and dirt — the find becomes readable in seconds.
Try it yourself — tap the button under the photo:
25 coins · price shown before launch
Usage scenario
Why maps and chats alone are not enough: they do not keep point, photo, context and outcome connected. This route shows how Discovera does.
Clans, raids & shared archive
Clan, shared map, role-based raids, a hall of finds and four kinds of conversation: everything the team needs before a trip, in the field and after. Nothing gets lost in group chats.
Two channels, Russian and English. A map point, a find from the catalogue or a photo drops straight into a message as a card, not a link.
Meeting points, the route and who takes which corner stay apart from the open chatter. A raid gets its own thread for the trip.
Voice notes, reactions, photos. The same place you ask Ivanych — and you can speak to him instead of typing with gloves on.
Finds, answers, tracks and raids earn reputation and levels — from Novice to Legend of Discovera, across 11 achievement series.
Catalogue · Museum
Finds do not sit in one flat list. The Museum lays them out in albums — the Russian principalities, Ivan III, Ivan the Terrible, Peter I, Catherine — and each album holds slots for specific coins: 84, 114, 138 of them. What is collected and what is missing reads at a glance.
From the app
Recently added by a comrade — fresh from the community feed. Stories live there too: short frames from an outing you can react to or reply to.
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Coins
Basics are free. AI and selected map actions use coins, and the price is always shown before you start. A new account gets 50 coins and three free map georeferences — usually enough for the first month.
FAQ
It depends on what you need. To simply look at an old map, any viewer will do; to keep a collection, you need a catalogue. Discovera is built for the case where you need all of it at once and out in the field with no signal: the old map settles over the satellite, the areas you need are downloaded in advance, a find is saved with its photo and its place, and AI helps you make sense of it. Comparisons in the Academy: metal detecting apps, historical maps on your phone, and choosing a detector 2025–2026.
Start with the law: where you may search and where you may not is cheaper to learn at home than in a field. Then decide why you are doing this — walking your own area, looking for one vanished village, or building a collection: everything else follows from that answer. Buy a mid-range detector rather than a flagship on credit; for a first season headphones and patience matter more. Prepare the map at home. And write the find up the same day, while you still remember where it lay and how deep. More in the top 10 newbie mistakes; onboarding: intro to metal detecting; what to do once a signal comes up: from signal to find.
VDI is a hint, not a passport. Learn tone and repeatability first, then fine discrimination. See VDI and discrimination and basic settings.
The primary release is Android (Google Play). On devices without Google Services, some online flows may be limited, while core field workflows still work. iOS is not released yet.
Yes. Downloaded offline areas, imported maps, marks, journal notes and tracks remain available without internet. Chats, publishing and sync catch up once connection is back.
AI analysis reads finds from photos and place context; you can preview restoration on pixels first. Case studies: AI in detecting: Discovera cases. Ivanych is your in-chat mentor for gear and outing scenarios.
Core workflows are free. AI and selected map actions (analysis, restoration, binding) use Discovera coins. Price is shown before each paid action.
A find is either published to the feed or kept to yourself. Location precision is a separate choice: exact, approximate area, or hidden. Personal notes and drafts are never auto-shared to public layers. Ethics baseline: safety and ethics.
Editorial approach, sources, and contact: Authors and experts. App bugs: [email protected].
Markers: KML import and export. Tracks: GPX export, GPX and KML import. For questions or bug reports: [email protected].
Trace the field on the map and check it against the Sentinel-2 satellite: the app reports the state — ploughed, stubble, regrowth or standing crop — and how ready it is for a trip. The satellite passes over every 2–3 days; while a field is watched it refreshes every night, and you get a notification the moment it is harvested or ploughed. Images are available by date, so you can see how the field changed across the season. A watched field is 5 coins for 30 days; field images are 3 free per day, then 5 coins. More in the fields section.
Let's go.
Map, AI and clan are already in your pocket. All that's left is to pick up your detector.