Free online network diagnostics and developer tools for engineers and IT professionals
Find out why Apple will reject your app before you submit
Stage
Not given
Not given
Founded
Not given
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Based in
BD
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Pricing model
Free
Paid
Pricing
Web Utility Suite: Free forever with complete access to all web-based diagnostic tools via browser, unlimited queries, no registration required. Programmatic API: Coming Soon.
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.
Key features
IP Lookup with geolocation, ISP, and ASN detection
DNS Lookup and query of multiple record types (A, AAAA, MX, CNAME, TXT, NS, SOA, CAA, PTR)
Subnet Calculator for IPv4 CIDR blocks and network calculations
Port Checker for TCP port connectivity testing
SSL Certificate Checker with expiration and TLS protocol verification
WHOIS Lookup for domain registration details
JSON Formatter and Validator with tree view and syntax error detection
Base64 Encoder and Decoder with file and image support
cURL to Code Converter supporting 7 programming languages
UUID v4 and UUID v7 generator with RFC 9562 compliance
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
What makes it different
100% free with no account, email, or payment required
Native Node.js execution for sub-second response times without queue delays
Privacy-focused with zero query logging and strict SSRF security filters
28 tools in one place covering both network diagnostics and developer utilities
All tools run in browser with no software installation or configuration required
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
RejectProof