AstroHelm vs ClearSpace

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 ClearSpace
Detail	AstroHelm	ClearSpace
What it does	Plate solving and push-to telescope navigation for smartphones	Your screenshot backlog, one small session at a time
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Not given
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	Free version includes unlimited scanning, full results review, and moving up to 50 selected items per month to trash. ClearSpace Pro includes unlimited deletion allowance, full-library quick review tools, duplicate and similar-photo groups, quality analysis, and large and old media review. Available
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	Focused review sessions of up to 25 screenshots Oldest-first sorting with age filters for 30 days, 6 months, or 1 year Separate keep and delete actions Duplicate and similar photo detection Quality analysis for blurry photos Android Trash confirmation and restore support No permissions beyond photo and video access Five-second undo for deletions Large and old media review Chat media detection for WhatsApp, Telegram, and KakaoTalk
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	Review-first approach with explicit deletion choices instead of automatic cleanup Focused sessions make large backlogs manageable Free version with 50 items per month deletion allowance Limited scoped permissions without requesting all-files access
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	1 no change since last check
Trust Flow (Majestic)	7	3
Citation Flow (Majestic)	28	17
Referring domains (Majestic)	65	6

4 details filled in for both companies.

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