Volley vs CachePlex

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

Volley compared with CachePlex
Detail	Volley	CachePlex
What it does	API sequence diagram tool with payloads on every arrow	Smart Tools · Smarter Workflows
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: editor, local diagrams, share links, SVG and PNG export, CLI, 3 saved diagrams, HAR imports up to 8 requests, 200 hosted API and MCP calls a month, 1 webhook inbox with 25 requests a month, 1 recording link with 3 recordings. Pro: $9/month or $90/year (billed in advance), up to 1,000 saved dia	Free forever: All core tools including SEO Analyzer, Readability Checker, Favicon Generator, QR Generator, and others. AI Humanizer: From $0.99 one-time or $4.99/month optional plan. Meta Tag Generator: From $4.99 one-time or $14.99/month optional plan.
Key features	Plain-text sequence diagram editor with real-time rendering Request and response payloads displayed on every arrow HAR file import with automatic redaction of secrets Webhook inbox to capture and diagram provider deliveries Recording links to collect customer HAR files as diagrams Drift Check to update diagrams when APIs change SVG and PNG export for sharing and embedding AI agent support via MCP server, HTTP API and CLI README embeds that update when diagrams are edited Presentation mode for step-through walkthroughs	SEO Analyzer with 50+ on-page checks and AI-powered recommendations AI Humanizer to transform AI text into natural, human-sounding content Meta Tag Generator for SEO titles and descriptions with bulk CSV support PostPlex social post designer with 40 templates and multiple platform sizes App Icons Generator supporting iOS and Android with 15+ sizes Favicon Generator supporting ICO, PNG, and WebP formats Email Deliverability Checker for SPF, DKIM, and DMARC validation AI Text Detector with confidence scores and signal analysis JSON, HTML and CSS validation and minification tools
What makes it different	No account needed to write and share diagrams AI can write diagrams from plain-text syntax Built from real traffic: HAR files, webhooks and customer recordings	No account required to start using most tools Results delivered in seconds with no installation or setup AI-powered insights using Google Gemini for actionable recommendations Privacy-first approach that only scans publicly visible content Free tools remain free forever with optional pay-as-you-go premium tools
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 no change since last check	30 no change since last check
Trust Flow (Majestic)	3	8
Citation Flow (Majestic)	22	21
Referring domains (Majestic)	8	51

5 details filled in for both companies.

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