Buck vs Astar

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Buck compared with Astar
Detail	Buck	Astar
What it does	Identify coins and banknotes from a photo, see their value	Name stars, leave notes, and find them again
Stage	Startup	Not given
Founded	Not given	Not given
Based in	IT	Not given
Pricing model	Freemium	Freemium
Pricing	Free browsing and collection management. Buck Pro subscription available weekly or yearly; pricing varies by country.	Not given
Key features	Identify coins and banknotes from photos Estimated value range in home currency Scan multiple coins in one shot Personal collection with running total Access 117,850 catalog records Country, denomination, year, and mint mark identification Composition, weight, diameter, and mintage information Community finds feed for sharing discoveries Confidence indicator for identification accuracy	Name stars and leave notes Public or private note visibility 3D scene visualization Notes limited to 280 characters Likes and favorites Explore feed Automated profanity filtering
What makes it different	Values anchored to precious metal spot prices Same app and index on both iPhone and Android	Private personal night sky Free on iOS and Android Public and private note options
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 −1 (down) since last check	29 no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	19	12
Referring domains (Majestic)	7	13

4 details filled in for both companies.