# Subnet Mask Calc — user reviews

> 18 indexed App Store user reviews of Subnet Mask Calc by John Rouda, rated 2.30/5 from 22 ratings.

- Source: https://appshunter.io/ios/app/subnet-mask-calc/id406375326/reviews
- App overview in markdown: https://appshunter.io/ios/app/subnet-mask-calc/id406375326.md
- Rating breakdown: 5★ 5 · 4★ 2 · 3★ 1 · 2★ 1 · 1★ 13

## Most critical reviews (10 lowest-rated)

### 1/5 — Doesn't work on iOS 10.2

*2017-02-28, version 1.5*

Sorry, unable to select any subnet from the scroll wheel and can't calculate as a result, shame, nice interface.  Needs an update and will probably be fine.

### 1/5 — Junk

*2015-09-25, version 1.5*

It is.

### 1/5 — RISKY app!

*2014-08-27, version 1.5*

I ran a scan of this app through Mobileiron and the result shows that it can access the camera, contact, and microphone on my phone. Also track my geo location and could take over twitter acct. DELETE!

### 1/5 — Crash!

*2013-10-31, version 1.5*

Crashes on IOS7.  Lot of space on the screen wasted.  Please enable screen rotate.

### 1/5 — Garbage

*2013-03-25, version 1.5*

I installed this and gave it my best shot. This is worthless.

### 1/5 — This is the worst app I ever used!

*2012-05-20, version 1.5*

The ugly user interface.

### 1/5 — Terrible

*2012-04-25, version 1.5*

It used be twitchy. Now it's unusable. Absolute crap.

### 1/5 — Bad app

*2012-04-11, version 1.5*

Bad GUI！

### 1/5 — Very poor

*2011-04-22, version 1.1*

Very poor attempt at a subnet calc, it may be free but don't bother

### 2/5 — Limited use

*2016-05-26, version 1.5*

Poor choice of shadow font makes display hard to read. Provides classful subnetting only, of little use today. Sorry developer, but not recommended.

## Most praised reviews (8 highest-rated)

### 5/5 — It does what the $$ do

*2011-06-12, version 1.2*

Perfect App, thanks for making it Free.

### 5/5 — good functional tool

*2011-05-15, version 1.2*

it works fine and does what i need it to do. i like the interface.

### 5/5 — Very useful apl

*2011-03-15, version 1.1*

Good for CCNA

### 4/5 — Excelente para comenzar!

*2012-10-30*

Excelente programa para aprender...
A+

### 4/5 — Subnet calculator

*2012-01-02, version 1.3*

Fantastic free calculator, does exactly what is says it does.
Very easy to use.
Highly recommended!!!

### 4/5 — Works great

*2011-11-17, version 1.3*

it calculates all the basics u need to know. It's free and has all the stuff as the paid ones (broadcast address, 1st address./last address, mask bits, # of hosts) . It would be better if it listed the subnet bits and host bits and the /#, but I'm just being lazy. That's easily figured out. Great app considering it's free

### 4/5 — Basic but works perfectly

*2011-04-28, version 1.1*

Exactly what I was looking for.

### 2/5 — Does the job, but no cigar!

*2011-08-14, version 1.3*

Does the job, but no cigar!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-08.*