Feature 03

Four tools that replace four apps.

Tactical navigation for when GPS is unavailable. Offline topo maps, a real-time celestial chart, field reference cards, and radio tools — all running locally on your device.

Maps
Celestial
Reference
Radio
No Signal — Navigation / Topographic Map
GPS: Active
+
−
Rally Point Alpha
Creek Crossing
Base Camp
Cliff Edge
Distance
3.47 km
44.4280° N, 110.5885° W · Z12

Waypoints

Rally Point Alpha
44.4312° N, 110.5921° W
Creek Crossing
44.4245° N, 110.5847° W
Base Camp
44.4298° N, 110.5812° W
Cliff Edge
44.4201° N, 110.5903° W

Routes

Alpha → Base Camp
3.47 km 2.16 mi 3 waypoints
1000+ Stars

Interactive Star Chart

A real-time celestial sphere with magnitude-based star sizing, spectral colors, 88 constellations, accurate moon phases, and planet positions.

  • Click any star for altitude/azimuth readout
  • Time control: adjust +/- 60 minutes
  • Night mode preserves dark-adapted vision
  • Built-in Polaris & Southern Cross guides
  • Full astronomy engine running client-side

Reference Cards

Field techniques and survival data at a glance

Radio Tools

Frequency references and communication planning for when infrastructure fails

Under the Hood

Technical Specifications

MapsLeaflet 1.9, Dark Theme
FrontendSvelte 5, SvelteKit, TypeScript
Desktop ShellTauri 2.10 (Rust)
StorageIndexedDB + localStorage
Explore More

See what else No Signal can do.

AI Assistant → Document Library → Inventory Tracker →

When there's no signal,
there's still an answer.

The smartest thing in your pack.

Join the Beta

Now testing — free for beta testers

macOS · Windows · Linux · Early access · Direct developer feedback