SetLuca vs CalStack

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

SetLuca compared with CalStack
Detail	SetLuca	CalStack
What it does	AI DM assistant for coaches and creators that replies to messages the way you write and books calls	Booking software for Google Meet calls with AI prep, live agenda, and recap
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Paid	Freemium
Pricing	Starter $99/month (1,250 replies/month, 200 Ask Luca units/month), Pro $249/month (4,000 replies/month, 750 Ask Luca units/month), Scale $499/month (8,500 replies/month, 2,000 Ask Luca units/month). Annual billing available at 2 months discount. 7 days free trial on all plans. Add-ons: Reply pack $2	Free plan: $0 (1 organization, 1 seat, 20 AI credits/month, 3 booking pages, CalStack branding). Team plan: $59/month (15 seats, 2,500 AI credits/month, unlimited booking pages, no CalStack branding). Agency plan: $199/month (unlimited organizations, unlimited seats, 10k AI credits/month).
Key features	Replies written in your personal writing style Auto-send or review mode for each channel Lead qualification and prioritization Automated call booking on calendar Follow-up campaigns for ghosted leads Comment-to-DM campaigns Integrations with Claude, ChatGPT, and Cursor Ask Luca in-app assistant for pipeline insights Multi-platform messaging on Telegram, Instagram, Messenger Pre-call brief and lead memory	AI-generated talking points before calls Live agenda panel inside Google Meet Automated call recaps with outcome tags Branching qualification questions Calendar integration with Google Calendar Branded booking pages for agencies Integration with Zapier, Gmail, and Google Chat Analytics by traffic source and device Multiple booking pages per account Floating widget to capture visitors
What makes it different	Replies written in your exact writing style, learned from sample replies you provide Replies within a minute at any hour without hiring a setter One unified inbox across Telegram, Instagram, and Messenger Campaigns with personalized versions for each lead Costs significantly less than a human setter	AI talking points generated from lead answers No-tab-switch live agenda in Google Meet One dashboard for multiple agency clients Works with Google Workspace Marketplace Free plan never expires
Community votes	0	0
DR (Domain Rating by Ahrefs)	10 +3 (up) since last check	1 no change since last check
Trust Flow (Majestic)	5	0
Citation Flow (Majestic)	25	11
Referring domains (Majestic)	34	3

5 details filled in for both companies.

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