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Massif · private 3D hunting maps, with every mark sealed under a key only you hold

Skip the flight

Access · By invitation

Massif runs on iPhone and Android. We’re opening it by invitation, a few people at a time.

Request an invite

Gloved hands hold a phone inside a wall tent at night. A lantern glows behind it, and the screen shows a dark topographic map with one red marker.
Wall tent, before first light. The mark on screen is sealed.

Encryption · yours alone

Only your key opens your map.

Every pin, track, note and photo is encrypted on your phone before it syncs. Each mark gets its own AES-256-GCM key, and your phone locks those keys with a device key it makes in its own secure hardware. That key never leaves the phone.

On your phone

Readable to you

Sheep Basin Glass

elev
10,280 ft
trail
6.8 mi from trailhead
saved
6:12 AM
note
Two rams bedded under the cliff band at first light. Glass from the east knob.

Sealed · only your key opens this

On Massif’s servers

Readable by Massif: the owner, an ID, the size and the sync time

owner
your account ID
id
mk_3f9c0e21
size
288 bytes
synced
12:12 UTC
data
Unreadable ciphertext, 288 bytes
key
Locked. Massif can’t open it.
The same mark in two places. Its name, location and note are all inside the ciphertext, which is longer than the note it hides.

Our servers keep a sealed copy, so your marks sync and can come back on a new phone with your recovery kit. Massif can’t read your spots, sell them or hand them over.

How the key works

Mapping

Know the country before you climb it.

Massif builds the map from high-resolution elevation, LiDAR and sub-meter imagery. Tilt it, orbit it and read it the way you’d glass it from the far ridge.

LiDAR bare earth · canopy removed · 1 m

  1. 3D terrain

    Tilt and orbit real elevation. See how a basin drains, where the benches sit and which face holds snow.

  2. LiDAR bare earth

    About 1 m resolution with the timber stripped away, where survey data exists. Benches, saddles, funnels, wallows and old roads show up plainly.

  3. Layers

    30 cm imagery, 20 ft contours, slope-angle shading, snow, public land and parcel boundaries.

  4. Routes and offline

    Plan a route with its elevation profile, save the region, and keep the whole map with no signal.

Everything on the map

A rancher leans on a fence above rolling private ground at golden hour, holding a phone that shows a map.
Private ground at golden hour.

The app

The app, screen by screen.

Shown with sample data.

Specs

What’s in Massif.

Data coverage varies by area.

Map

Terrain
Full 3D, tilt and orbit, high-resolution elevation
LiDAR
Bare earth, about 1 m, where surveyed
Imagery
30 cm where available
Contours
20 ft
Shading
Slope angle
Layers
Snow, public land, parcel boundaries
Routes
Elevation profiles
Offline
Saved regions for no-signal country
Marks
Pins, tracks, notes, photos

Keys

Encryption
AES-256-GCM, one key per mark
Where
On your phone, before anything syncs
Device key
Secure Enclave on iPhone. StrongBox on Android, or the hardware-backed keystore on phones without it. Never leaves the phone.
Recovery
24-word recovery kit. Optional FIDO2 hardware key.
Back door
None. Massif cannot reset or recover a lost key.
Servers hold
Sealed marks, locked keys, public keys, sizes, timestamps, your account, share records, a push token and connection details
Sharing
One mark, one person. View only, expiring, revocable.
Platforms
iPhone and Android
Access
By invitation

By invitation

Request your invite.

Massif is invite only for now. Leave your email and we’ll send your invite as soon as it’s ready.

Where do you hunt? Optional

We only email about your invite and this list. We never sell or share the list. Privacy policy

A hunter sits on a granite ridge at first light, glassing a wide alpine basin with snow on the peaks.