AstroHelm vs Bookster

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

AstroHelm compared with Bookster
Detail	AstroHelm	Bookster
What it does	Plate solving and push-to telescope navigation for smartphones	Your Reading Companion
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Free
Pricing	Free with optional one-time purchases: Plus $9.99 (Messier and Caldwell catalogs, Bayer or Flamsteed designated stars), Pro $29.99 (everything in Plus, NGC and IC catalogs, remote control, ASCOM Alpaca/INDI/LX200/Stellarium connections), Pro Beta pricing $24.99	Not given
Key features	Live plate solving with accuracy up to within 10 arcseconds Computes coordinates in less than a second Immune to magnetic field interference Works in light-polluted skies Complete offline operation Personalized guide to tonight's best targets Remote control between devices (iOS) Integration with Stellarium and SkySafari	Organize and manage book collections Search 40+ million books by title, author, or ISBN Set and track reading goals Discover bestsellers and recommendations Add books by scanning barcodes Organize books into unlimited collections Take and store reading notes
What makes it different	On-device plate solving eliminates compass and gyroscope drift and lags that traditional astronomy apps experience Sub-arcminute precision navigation that outperforms standard planetarium apps No subscription required, only optional one-time purchases Compatible with existing telescope and equipment without proprietary hardware lock-in	Barcode scanning for instant book addition Access to over 40 million books All-in-one book organization and reading tracking Free to download with no subscription required
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)	5 no change since last check	21 no change since last check
Trust Flow (Majestic)	7	6
Citation Flow (Majestic)	28	24
Referring domains (Majestic)	65	30

4 details filled in for both companies.

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