SheetBrain vs Systune

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 Systune
Detail	SheetBrain	Systune
What it does	Google Sheets add-on that detects spreadsheet bugs and generates formulas in seconds	Clean your Mac without the guesswork
Stage	Not given	MVP
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Not given
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.	US$39 once for three Macs in one household with two years of updates (direct). Mac App Store edition planned at US$39 once with final pricing to follow App Store tiers. First 100 waitlist signups receive free lifetime license including all future versions. 14-day full trial and 30-day refund planned
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	103 cleaning categories with four risk levels 92 security and privacy checks with one-click fixes 300 macOS settings with profiles, snapshots and undo Disk analysis with list, treemap, ring and file-kind views Duplicate and large-file finder Command-line interface with JSON output Full-screen terminal dashboard iPhone companion over local network 67 maintenance tasks including rebuilds and service restarts Startup item and launch daemon inspector
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	All changes listed and confirmed before removal with a test strip showing exact paths and bytes Protected system paths refused and user files offered to Trash with regenerable caches deleted in place Five rounds of independent security, correctness and performance review with published findings Local processing with no analytics, crash reporting or scan result uploads
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	11 +1 (up) since last check
Trust Flow (Majestic)	3	7
Citation Flow (Majestic)	14	20
Referring domains (Majestic)	8	17

4 details filled in for both companies.

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