SheetBrain vs CallFirst

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

SheetBrain compared with CallFirst
Detail	SheetBrain	CallFirst
What it does	Google Sheets add-on that detects spreadsheet bugs and generates formulas in seconds	Screen time app that unlocks social media after a real phone call with someone you love
Stage	Not given	Startup
Founded	Not given	Not given
Based in	Not given	GB
Pricing model	Freemium	Freemium
Pricing	Free plan: $0/month with unlimited Sheet Check scans and 15 AI calls per month. Pro plan: $9/month for 1,000 AI calls per month. Both plans include all tools (Check, Repair, Audit, Generate, Explain, Debug), shareable audit reports, and six custom functions.	Free tier with one contact and daily unlock; paid tiers available with pricing varying by region and currency (from GBP 0 to GBP 59.99). Annual subscriptions and one-time purchases available.
Key features	Broken reference detection and repair Mixed data type detection in columns Duplicate lookup key detection Visible formula error flagging (#N/A, #VALUE!, #DIV/0!, #REF!) AI-powered formula generation from plain English Formula explanation and debugging Schema repair for renamed and moved columns Six custom functions (HEALTH, ISSUES, GENERATE, EXPLAIN, EXTRACT, CLASSIFY) Multi-sheet context awareness for formula generation	Blocks Instagram, TikTok, YouTube, X, Threads, Facebook and Snapchat until 60-second phone call On-device call verification without access to call logs or audio Customizable blocking schedule with one-tap activation Supports both regular phone calls and WhatsApp calls Multiple contacts and named groups on Pro tier Privacy-first design with no contact data synced to servers Daily unlock system resetting each day Free tier with one contact and one daily unlock
What makes it different	Deterministic error detection without AI calls for basic spreadsheet health checks Reads full spreadsheet context (headers, data types, column positions) before generating formulas Flat $9/month pricing with AI included, no API keys required Schema Repair automatically fixes formulas after column changes without manual rewriting	Designed for personal connection rather than productivity blocking Call-based unlocking replaces generic friction like timers or breathing exercises Verification happens locally on-device without server access to contact data One simple mechanism designed for maximum behavioral impact
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 no change since last check	3 no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	14	20
Referring domains (Majestic)	8	18

5 details filled in for both companies.

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