18+ iOS apps curated and reviewed
ISC Dig is the household name in domain name system app, but it's far from the only option. We track 18+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.2★ (6) | No | No | May 2026 |
| 2 |  | Free | 2.9★ (8) | No | No | Jul 2026 |
| 3 |  | Free | — | No | No | Jun 2026 |
| 4 |  | Free | — | No | No | Jul 2026 |
| 5 |  | Free | 4.9★ (11) | No | Yes | May 2026 |
| 6 |  | Free | 5.0★ (1) | Yes | No | Jun 2026 |
| 7 |  | Free | — | No | Yes | May 2026 |
| 8 |  | Free | — | No | No | May 2026 |
Perform DNS lookups on your iOS device. This utility allows you to enter a domain name and retrieve its DNS records, supporting many options from the command-line version.
Manage your dynamic DNS service and other account features on the go. This utility automatically detects IP address changes and updates your domain name mapping. It supports both IPv4 and IPv6 updates, making it essential for maintaining your dynamic DNS service.
Access detailed registration information for domain names, IP addresses, and autonomous system numbers. It queries authoritative RDAP servers to display registrant, expiration, registrar, and DNS details. This tool replaces the older Whois protocol for modern data retrieval.
Prepare for the SecurityX CAS-005 certification exam with a comprehensive study guide. It offers expert-crafted questions, realistic simulations, and detailed explanations to help you master advanced security concepts and track your progress effectively.
Access a curated collection of classic audiobooks at a significantly lower cost than major services. Refer friends to earn a free subscription and enjoy timeless stories.
Prepare for the CISSP exam with over 1200 practice questions and AI-powered study assistance. This app offers topic-based practice, mock tests, and personalized study plans to help you master the required knowledge and achieve certification.
Prepare for the SAFE MLO exam with expert-curated flashcards. Master loan origination, federal regulations, and ethical practices through personalized study sets and spaced repetition. Track your progress and study offline to boost your confidence for certification.
Prepare for the CompTIA A+ certification exams with practice questions, realistic simulations, and detailed explanations. Tailor your study with personalized plans and track your progress to build confidence for a career in IT support.
