VLSM / CIDR Subnet Calculator

This is one of the better CIDR subnet calculator. One suggestion for improvement - should just show larger number only keyboard when entering IP value

I've always struggled with subnet masks, and now I don't!

Just don't enter an IP with a /32 mask... Makes it crash.

Doesn't work. Keeps crashing on Samsung S7 edge

It makes sub netting too easy. Great pocket tool for when you haven't had enough coffee to think clearly.

Loved the app.. thank you for putting your effort for this app and making it available for free..its helping me a lot..

Always Crashed I don't known why? Fix it

Good solid app however if you accidentally use a subnet that isn't valid it's crashing the app.

This is the perfect Subnet Calc I've used so far. The clear professional UI and the most universal features it has.

Very handy, works well, does just the trick!

Helpful for quick subnet calcs, without all the extraneous crap in many other apps.

it is excellent, but customized subnet mask not showing in VLSM.other than is awesome very helpful

An excellent to for annotating subnets. Ready to figure out, use, and it even includes the binary notations!

I love the fact it shows the binary representation so it reenforces the theory so when we are testing we can do so by hand.

Crashes frequently when calculating cidrs

Great Tool! Simple, Concise and Effective... Perfect for learning IP Address Schemas and Subnetting

I like it, but when insert /32 app auto close

It's very useful for the verification of my answers thank you all for your efforts

Bella app. Snella e leggera. Fa bene il suo lavoro.

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Has everything that I need for subnetting

Super simple interface. Clearly designed by someone who knows the need of such a tool. Excellent

It does what it says and does it well.

Gave it a quick try and it's perfect for anyone taking classes or working in the networking field. Can't recommend​ it enough. Edit: Still giving it five stars for functionality, but there seems to be a small issue with adding a decimal in the CIDR. Might be something to do with expecting and integer but receiving a double.

Fantastic!! As a Network Security Professional student, I struggled with subletting, it was my only roadblock. This app not only helps to quickly configure networks but also helped me to grasp the concept.

No complaints. Everything you need to take the annoying parts out of networking.

I've installed and uninstalled all IP subnet calculators offered in the Play Store and this one is the clearly the best. I'll be keeping this one.

It doesn't work very well. The configuration of the VLSM multi network sizes are wrong. I used other calculators to verify the calculations were incorrect.

Very helpful programm! But everything over CIDR 30 will lead the programm to crash. Needs better error handling.

Wow, what a difference this app makes. Whether checking my school work answers, or just quick numbers when configuring a network, this app is great. Love it.

Like

Good

good

Awesome

When I use the VLSM section of the app, if I rotate my phone to landscape mode then all of my entered data disappears and I have to retype it all. Please fix and I'll bump my rating to 5 stars.

By far the best app on the market for CIDR and VLSM calculations. A couple of suggestions: 1) a clear button to wipe the entry 2) when you enter a full stop, it doesn't skip a field 3) paid option to remove the ads.

The best so far! Suggestions; copy the entered address from the SUBNET to the VSLM page to avoid having to retype and allow ordering of the subnets; best address usage and entry order.

Very Good

Simple and nice

As a networking admin student subnetting is something I need to know and struggle with at times and this tool has helped me confirm the work I've been doing was right and letting me see when I was off so I could fix it. Over all it's a great tool for subnetting