# CIDR vs NetBits

The clearest difference is in-app purchases: NetBits at none against CIDR's 1. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. CIDR sells 1 one-off in-app purchase. NetBits asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for CIDR against 5.0 for NetBits. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

CIDR ships an update every 3 weeks, NetBits monthly. The most recent releases landed on June 30, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | CIDR | NetBits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/netbits-ip-calculator/id6746674812/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 23 MB | 3 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ao-system, Inc.](https://appshunter.io/developer/1338624340) | [Vitaly Churkin](https://appshunter.io/developer/1765665325) |

## What reviewers say

### CIDR

[App page](https://appshunter.io/ios/app/cidr/id1564239813)

This utility calculates IP address ranges from an IP address and subnet mask. It supports IPv4 calculations, including prefix display, address range counts, and bit notation. Useful for quick CIDR notation checks and subnet mask conversions.

**Highlights:** IP address range calculation, Subnet mask to CIDR conversion, IPv4 prefix display, Number of address ranges, Bit notation display, Quick reference table

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### NetBits

[App page](https://appshunter.io/ios/app/netbits-ip-calculator/id6746674812)

This utility app quickly calculates IP subnet information. It provides network and broadcast addresses, usable host ranges, and binary representations for IPv4 addresses and subnet masks. Designed for network professionals and students, it offers a clean, ad-free experience.

**Highlights:** CIDR notation input, Network and broadcast address calculation, Usable host range display, Binary address and mask view, Offline functionality, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CIDR free?

CIDR is free to download, with in-app purchases available.

### Is NetBits free?

NetBits is free to download, with no in-app purchases.

### Which has better reviews, CIDR or NetBits?

CIDR and NetBits are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do CIDR or NetBits have ads?

Neither CIDR nor NetBits shows ads.

### Which is updated more often, CIDR or NetBits?

CIDR ships an update every 3 weeks, and NetBits monthly. Most recently, CIDR was updated on June 30, 2026 and NetBits on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*