Subnet Driller
CCNA & Network+ exam practice
Free · Designed for iPad. Not verified for macOS.
Fast, offline subnetting practice for CCNA and Network+ candidates. Random questions, deterministic answers, built-in block size reference, and zero ads or accounts.
An offline subnetting quiz for CCNA, Network+, and other certification candidates - questions randomly generated, answers deterministic, every calculation hand-verified.
It drills the "magic number" / block-size method I memorized before my own exams: built for speed and repetition.
Features:
- Built-in block-size ("magic number") reference, one tap away
- Five randomly generated questions per session
- SESSION and TOTAL counters to track progress
- Fully offline - no accounts, ads, tracking, or subscriptions
- Built by a working network engineer with AI-assisted tooling, and thoroughly tested
About me:
I'm a working network engineer and active CCNA, residing in Arizona, USA.
Questions, feedback, or bug reports? I read and reply to every email personally.
Ratings & Reviews
The developer, Tyler Dix, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tyler Dix
- Size
- 2.6 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Tyler Dix