Network Labs & Subnet Prep
Shunya Iwasaki Education iPhoneiPadiPod touch
Network Labs & Subnet Prep is a free Education app for iPhone and iPad by Shunya Iwasaki. Requires iOS 17.0. Updated October 21, 2026.
- Price
- Free
- on the App Store
- Size
- 3 MB
- Age 4+
- Updated
- Oct 21
- 2026 · v1.2.0
Screenshots
About Network Labs & Subnet Prep
Still working out every subnet by hand? Practice until the math feels automatic. Network Labs & Subnet Prep gives you a new subnetting question every time, with the steps written out after you answer. It also includes independently created practice questions and guided offline labs for CCNA 200-301 study. SUBNETTING DRILL • A new question every time, so you practice the method instead of memorizing answers • Core skills: network address, broadcast address, usable host range, usable host count, prefix to mask, and mask to prefix • Advanced: wildcard masks for ACLs and OSPF, same-subnet checks, sizing a subnet for a host count (VLSM), splitting a network into subnets, and route summarization • Answers come from the built-in subnet calculator, which is tested against an independent reference ALSO INCLUDED • Subnet calculator: network, broadcast, host range, mask, wildcard mask, and usable hosts for any IPv4 address and prefix length • Practice questions by exam topic, with an explanation for every choice • Quick 10 and a mini mock exam • Guided labs for CLI, routing decisions, VLANs, ACLs, NAT, STP, and packet flow • Progress by exam version, with readiness shown as a study indicator, not a pass guarantee • Study Mode: lock the apps you choose for a set time, free for everyone • No account, no ads, and no data sent to external servers FREE AND LIFETIME ACCESS Free: all six core drill types without limits, one question of each advanced drill type, 50 practice questions, 25 guided labs, Quick 10 and Mini Mock, explanations, progress tracking, and purchase restoration. Lifetime Access: unlimited advanced drills, the complete 100-question bank, and all 50 guided labs, so Quick 10 and Mini Mock draw from the full set. One purchase; no subscription. STUDY MODE Pick the apps that pull you away, set a time, and they stay closed until it is up, so you can stay with practice questions and labs. Study Mode is free for everyone, works only on your device, and can be stopped any time from the app. This is an independent study tool. It is not affiliated with, endorsed by, or sponsored by Cisco Systems, Inc. It contains independently created educational content, not actual exam questions or unauthorized exam dumps. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://common-legume-c99.notion.site/3a1fb55d2567815483fdc70eae63359b
What’s new
Version 1.2.0 · Updated October 21, 2026
New: Subnetting Drill. Practice network and broadcast addresses, host ranges, host counts, and mask and prefix conversions with a new question every time. The steps appear after you answer. Advanced drills cover wildcard masks, same-subnet checks, sizing a subnet for hosts (VLSM), splitting a network into subnets, and route summarization. The subnet calculator on the Labs tab is easier to find, and the app is now named Subnet Prep on the Home Screen.
App privacy
The developer, Shunya Iwasaki, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Network Labs & Subnet Prep | – | Free | October 21, 2026 | |
| CCNA Exam Prep 2026: 200-301 | – | Free | Jun 23, 2026 | Compare |
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| App Review Quiz - Pass/Reject | – | Free | Oct 24, 2026 | Compare |
| Network+ Prep: N10-009 Exam | – | Free | Jun 23, 2026 | Compare |