SheetBrain vs lum9a

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 lum9a
Detail	SheetBrain	lum9a
What it does	Google Sheets add-on that detects spreadsheet bugs and generates formulas in seconds	The cutest to-do list, free forever
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
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 plan: unlimited tasks and calendar sync, XP, levels, Glow and world building, streaks, daily gifts, focus sessions and reminders, sync across all devices. Plus Monthly: $1.99 per month, everything in Free plus no ads, Aurora and Halo outfits with new monthly outfit, more study sounds, 2 extra s
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	Canvas and Google Calendar sync XP and leveling system Pixel world building with Glow currency 25-minute focus timer with sounds Daily streaks and streak savers Smart phone reminders Friend sharing and world viewing No password sign-in with email Cross-device sync Multiple world locations unlocked by leveling
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	Free forever with no credit card required Makes homework engaging through pixel world gamification Automatic Canvas assignment syncing Integrates school and personal tasks in one place Works on any device as a web app
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	5 +4 (up) since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	14	0
Referring domains (Majestic)	8	1

5 details filled in for both companies.

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