Most crypto signal apps break when the market gets volatile, I found out why

I’ve been building a crypto signal system for the past months, and I ran into something I didn’t expect:

Most signal apps don’t fail because of bad indicators, they fail because of bad data.

When volatility spikes:

– APIs fail

– candle data gets inconsistent

– some apps silently switch to synthetic or incomplete data

And that leads to the worst possible outcome:

→ false confidence

I tested this by simulating failures and watching how signals behaved.

What I found:

– signals during unstable data are often worse than random

– many systems don’t distinguish between real vs fallback data

– alerts keep firing even when the data isn’t trustworthy

So I changed the approach entirely.

Instead of trying to “always have data”, I built a system that:

– only trusts real market candles

– falls back to previously cached real data (if still fresh)

– completely blocks event signals if data isn’t reliable

In some cases, it will "not send anything at all", which is actually safer.

It also adjusts behavior based on context:

– fast signals for short-term

– confirmation from higher timeframes

– more conservative behavior under stress

Curious how others here think about this.

Do you trust signal apps during high volatility?