ChatVault vs AstroHelm

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

ChatVault compared with AstroHelm
Detail	ChatVault	AstroHelm
What it does	Archive WhatsApp chats with photos and voice notes	Plate solving and push-to telescope navigation for smartphones
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Free version with optional one-time Pro unlock. No subscription.	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
Key features	Convert whole chats or select date ranges Play voice notes directly in browser Self-contained HTML archive format Tamper-evident archives with signatures Support for 5 languages Native iOS and Android apps Process media files and photos inline No account creation required	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
What makes it different	Privacy-first: everything stays on your device with no servers or tracking Voice notes converted to play in any browser One-time Pro unlock with no subscription Tamper-evident archives with cryptographic signing Flexible conversion: whole chat or custom date range	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
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)	Not checked yet no change since last check	5 no change since last check
Trust Flow (Majestic)	3	7
Citation Flow (Majestic)	7	28
Referring domains (Majestic)	2	65

5 details filled in for both companies.

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