Search modes: DTW and Geo

DejaBars ships eight matching algorithms. They fall into three families, and they differ in

how strictly they compare two price curves.

Geometric — the cheapest, and free

Geo simplifies both your pattern and every candidate window into straight segments using

Ramer–Douglas–Peucker, then compares the angles, the ratios between segments and the direction of

each turn.

Speed: fast.
Cost multiplier: 1 (free tier, with a free timeframe and a period up to 30 days).
Best for: clean, clearly-shaped patterns you drew deliberately.

Algorithm	What it does	Cost multiplier
DTW (Dynamic Time Warping)	Classic shape match that allows a curve to stretch and compress in time	2
WDTW (Weighted DTW)	DTW with a penalty that grows with how far a point is warped	6
ERP (Edit distance with Real Penalty)	Edit-distance style comparison that tolerates gaps	6
LCSS (Longest Common Subsequence)	Matches the shared subsequence and ignores outliers	6

These find shapes that appear at a different speed than you drew them, which is why they are the

most expensive to run.

Algorithm	What it does	Cost multiplier
Matrix Profile	Finds every repeated subsequence of the same length across the series	3
Cross-Correlation	Sliding-window Pearson correlation; finds near-exact copies of your template	3
SAX	Symbolic aggregate approximation; compares coarse shape signatures	3

Matrix Profile and Cross-Correlation require the candidate window to match your pattern's length,

so they are precise but rigid. SAX is a middle ground.

Start with Geo: instant, free, and it handles most hand-drawn shapes.
If too little comes back, move to DTW: it tolerates different speeds.
If you want exact repeats of a specific template, use Cross-Correlation or Matrix Profile.
Reach for WDTW / ERP / LCSS when the shape matters but timing varies a lot — they cost the most.

A search costs timeframe × algorithm × period tokens; the free tier (Geo, 1h–1w timeframe,

period up to 30 days) is free. See Tokens, plans and allowances.