# Authenticator+ vs CIDR

The clearest difference is in-app purchases: Authenticator+ at none against CIDR's 1. Authenticator+ also leads on iOS requirement (13.0 vs 15.6). CIDR's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 16 months). On price and device support there is nothing between them.

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

Authenticator+ ships an update every 16 months, CIDR every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Authenticator+ | CIDR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cidr/id1564239813/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 20 MB | 23 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Studio Fifteen](https://appshunter.io/developer/1470310980) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### Authenticator+

[App page](https://appshunter.io/ios/app/authenticator-plus/id1534054410)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Authenticator+ free?

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

### Is CIDR free?

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

### Do Authenticator+ or CIDR have ads?

Authenticator+ shows ads; CIDR does not.

### Which is updated more often, Authenticator+ or CIDR?

Authenticator+ ships an update every 16 months, and CIDR every 3 weeks. Most recently, Authenticator+ was updated on October 25, 2026 and CIDR on October 24, 2026.

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