Astra vs Umbra: When to Use Light Mode and When to Use Roast Mode

LínBoo is the only astrology app with two voices on the same chart. Here's how to use them.

Use Astra (gentle light) when:

• You're raw and need steadying, not schooling.
• You're learning astrology and don't want to drown in jargon.
• You want encouragement before a hard but necessary step.

Use Umbra (brutally honest) when:

• You've been avoiding the same pattern for months.
• You need the unvarnished truth before a big decision.
• Soft horoscopes have started to feel like they're pandering.

You don't have to pick one forever. The same natal chart, horoscope, synastry, or tarot spread can be read by either voice. Read it with Astra for comfort, then Umbra for clarity — most people do both.

It's one app, not two. No second account, no separate tool. Switch the voice and the same reading re-voices itself. See the full feature comparison →

Try it free, no login: open LínBoo and toggle between Astra and Umbra on any reading.