Is Dealophant a Keepa alternative?

Not exactly — they solve different problems. Keepa charts price history for one Amazon listing you already picked. Dealophant ranks every listing in a category by true cost per ounce and true value per unit so you can pick the right one in the first place. Many shoppers use both.

Does Dealophant have a price history chart like Keepa?

Dealophant maintains a 90-day rolling price history per ASIN, viewable at /price/[asin], and the /lowest page shows products at or near their tracked 90-day low. Keepa's charts go back further and are its core feature; Dealophant's core feature is the per-unit ranking across a category.

Is Dealophant free like Keepa's basic tier?

Yes. Dealophant is completely free to use, with no subscription and no paywall — no account required to search or compare.

Dealophant vs Keepa

Keepa is a price-history charting tool, usually run as a Chrome extension, for a specific Amazon listing you already have open. Dealophant is a free search engine that ranks every listing in a category by true cost per ounce and true value per unit before you've picked one. They answer different halves of the same question: Keepa tells you if a listing you already chose is at a good price historically; Dealophant tells you which listing to choose in the first place.

Quick verdict

If you're already looking at a specific Amazon product page and want a long-term price chart, Keepa is the right tool. If you haven't picked a listing yet and want to know which pack size or brand is actually cheapest per ounce or per unit, Dealophant is the right tool. Power shoppers use both: Dealophant to pick the listing, Keepa to time the purchase.

When Dealophant is the better fit

You haven't picked a specific listing yet and want the cheapest true cost per ounce across brands and pack sizes.
You want per-unit normalization done automatically, without reading a chart.
You want a deterministic ranking with no extension install required — it's a free web app, no signup.
You want the methodology public and auditable, including the source code.

When Keepa is the better fit

You already know the exact ASIN and want a multi-year price history chart.
You want browser-extension price-drop alerts and Keepa's tracking/notification features.
You're comparing categories where price history matters more than unit-size comparison (electronics, tools).
You want Keepa's deeper historical data export and API for advanced tracking.

Side-by-side

	Dealophant	Keepa
Primary purpose	Rank every Amazon listing in a category by true cost per ounce / true value per unit.	Chart long-term Amazon price history for a specific ASIN.
Question it answers	"Which listing in this category is actually cheapest per unit?"	"Is this specific listing's current price good relative to its history?"
Format	Free web app, no install.	Chrome/Firefox extension plus website.
Data source	Amazon Product Advertising API, live on every search.	Long-running price scrape/tracking history per ASIN.
Per-unit normalization	Yes, automated for every listing via title parsing plus an LLM classifier.	No automatic per-unit normalization.
Account required	No.	No for basic charts; yes for tracking/alerts.
Cost	Free to use — no subscription, no paywall.	Free tier; paid tiers for extended history and alerts.

Bottom line

Use Dealophant first to find the cheapest-per-unit listing in a category, then check that specific ASIN's price history on Keepa before you buy.

FAQ

Is Dealophant a Keepa alternative?: Not exactly — they solve different problems. Keepa charts price history for one Amazon listing you already picked. Dealophant ranks every listing in a category by true cost per ounce and true value per unit so you can pick the right one in the first place. Many shoppers use both.
Does Dealophant have a price history chart like Keepa?: Dealophant maintains a 90-day rolling price history per ASIN, viewable at /price/[asin], and the /lowest page shows products at or near their tracked 90-day low. Keepa's charts go back further and are its core feature; Dealophant's core feature is the per-unit ranking across a category.
Is Dealophant free like Keepa's basic tier?: Yes. Dealophant is completely free to use, with no subscription and no paywall — no account required to search or compare.