RejectProof vs eryx

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

RejectProof compared with eryx
Detail	RejectProof	eryx
What it does	Find out why Apple will reject your app before you submit	WebAssembly sandbox for running untrusted Python safely
Stage	Not given	Not given
Founded	Not given	Not given
Based in	TR	Not given
Pricing model	Paid	Open source
Pricing	Free: 10-question metadata review with no account. One app: $12 for full 54-point scan with 3 days of unlimited re-scans. Five apps: $39 ($7.80 each) for 5 credits. Studio: $99 for 20 apps ($4.95 each). One-time payment, no subscription. All prices exclude VAT.	Not given
Key features	54-point binary and metadata checks covering privacy, runtime, app completeness and provisioning Each issue includes guideline number, evidence and plain-English fix Support for Expo, Xcode, Rork, a0 and Bolt builds Privacy-first approach with JSON-only server communication Rejection guarantee refund if approved app marked as passing fails review	Full CPython 3.14 with standard library Async callbacks from sandboxed code No filesystem or network unless allowed Fast startup in 1–5 milliseconds Embed from Python, JavaScript or Rust MCP server support gRPC server deployment Hosted execution over HTTP and WebSocket
What makes it different	One-time payment per app with no subscription Unlimited re-scans for 3 days after purchase to verify fixes Built by an iOS developer with focus on preventing avoidable rejections	Full CPython 3.14 running in WebAssembly Async callbacks between sandbox and host Extremely fast sandbox startup Works as MCP server for AI agents
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)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	15	6
Referring domains (Majestic)	8	2

4 details filled in for both companies.

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