SubnetKit

Networking maths without searching Google.

Help with this app

Enter an IPv4/IPv6 address and prefix to calculate locally. Use host sizing, membership, overlap and VLSM tools, then save named plans or share results. Conventional IPv4 usable-host rules are distinguished from the mathematical address count.

Export text, CSV or a full JSON plan backup. Restore validates the JSON before replacing saved plans. The app does not query DNS, WHOIS, geolocation or any live network.

Contact support and protect your local data

Privacy policy

Publisher: ascaidevlabs, publishing under the NoCloud Labs brand.
Effective date: 9 October 2026.
Privacy contact: ascaidevlabs@gmail.com.

Information on your device

SubnetKit stores saved plan names, addresses/prefixes and VLSM requirements in its private local database. Network arithmetic and text/CSV/JSON export preparation happen on your device. Saved plans and backups can reveal details of your network design; choose private destinations.

The core workflow works without an internet connection. We do not receive your app content through the app and do not operate a NoCloud server for it. The app has no account registration, advertising, subscription, tracking SDK or third-party behavioural analytics. We do not sell personal information. We cannot access or recover your local app content remotely.

Permissions and sharing

JSON restore uses the operating system file picker and exports use the native share sheet. Camera, microphone, contacts, device location and notification access are not required.

A photograph, document or backup you select through a system picker may come from a cloud provider you use. When you choose Share, the operating system passes a copy to your selected destination. Email, messaging, file and cloud-storage services have their own privacy practices. NoCloud does not receive that copy unless you deliberately send it to us, for example by email.

Storage and deletion

Use the app controls to delete saved plans. App-owned export files are removed after normal sharing. Interrupted exports or operating-system/recipient copies may remain until their own cleanup. JSON backups are not encrypted.

Removing the app or losing your device can remove your only copy. Device backups and transfers are controlled by your operating system and settings; do not rely on them as a guaranteed recovery mechanism. NoCloud provides no cloud backup or recovery. Deleting app content does not delete source files, exports or backups stored elsewhere. Cleanup runs when the app performs the relevant operation, not continuously while it is closed. Normal file deletion is not a promise of forensic secure erasure.

App stores, support and this website

The store handles purchases and downloads under its own policies and may provide sales statistics or platform diagnostic reports. This is separate from the app’s local processing.

If you email support, we receive the information you choose to send through Gmail. Routine support emails are deleted 12 months after an enquiry closes, except information needed for a continuing dispute or legal obligation. Avoid attaching private photographs, documents or customer records unless necessary. Visiting this website sends request information to its hosting provider, Cloudflare. See website and support privacy for details and provider policies.

Privacy questions and requests

Email ascaidevlabs@gmail.com with the subject “Privacy request” to ask about, access, correct or request deletion of information you sent us. Identify the relevant email conversation without attaching private app content. We may need to confirm that the request comes from the person concerned. For content stored only on your device, use the app’s controls; we cannot retrieve or delete it remotely.

Policy changes

Changes to this policy will appear here with an updated effective date.