Macsmith vs Castov

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

Macsmith compared with Castov
Detail	Macsmith	Castov
What it does	Your developer tools. One Mac app.	Fast, 100% client-side developer platform with zero-data logging
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free: Inspection of all 20 tools included. Macsmith Pro: $5 USD one-time per developer, valid on up to three Macs, includes every future update, no subscription required.	All tools are free with no usage limits. The site may show ads in the future to cover running costs.
Key features	Not given	Multi-timezone support with IANA database and daylight saving time JSON to TypeScript conversion JWT decoder and inspection Cron expression parser and generator End-to-end encrypted environment variable vaults P2P multiplayer canvas with WebRTC and CRDT Steganography for hiding encrypted secrets in images Service Worker API mocker for frontend testing Encrypted URL shares with hash fragment storage
What makes it different	All twenty developer tools integrated in one native macOS application 100% native macOS built with Swift and SwiftUI Works on up to three Macs per developer license	Zero-data logging: no keystroke sent to external servers, all processing in browser memory 100% client-side operation works entirely offline Unified ecosystem across web, CLI, and AI agents via MCP Server Sub-millisecond performance with local execution Tool chaining and piping for seamless multi-stage workflows
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)	3 +1 (up) since last check	1 +1 (up) since last check
Trust Flow (Majestic)	13	1
Citation Flow (Majestic)	23	19
Referring domains (Majestic)	11	7

4 details filled in for both companies.

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