# Subnet Mask Wheel vs Ratio Calculation

The clearest difference is in-app purchases: Ratio Calculation at none against Subnet Mask Wheel's 1. Ratio Calculation also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Subnet Mask Wheel sells 1 one-off in-app purchase. Ratio Calculation asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Subnet Mask Wheel | Ratio Calculation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/subnet-mask-wheel/id560947458/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 4 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Furuya](https://appshunter.io/developer/503779747) | [Tomohiko Akamine](https://appshunter.io/developer/1538895235) |

## What reviewers say

### Subnet Mask Wheel

[App page](https://appshunter.io/ios/app/subnet-mask-wheel/id560947458)

Easily convert subnet masks between decimal, binary, and CIDR notation. Quickly see the number of available host addresses for any given mask. Input masks using a picker, slider, or prefix length buttons.

**Highlights:** Decimal subnet mask display, Binary subnet mask display, CIDR notation display, Host address count, Input via picker, slider, or buttons

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |


### Ratio Calculation

[App page](https://appshunter.io/ios/app/ratio-calculation/id1538895233)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subnet Mask Wheel free?

Subnet Mask Wheel is free to download, with in-app purchases available.

### Is Ratio Calculation free?

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

### Do Subnet Mask Wheel or Ratio Calculation have ads?

Both Subnet Mask Wheel and Ratio Calculation show ads.

### Which is updated more often, Subnet Mask Wheel or Ratio Calculation?

Subnet Mask Wheel ships an update every 5 months, and Ratio Calculation every 5 months. Most recently, Subnet Mask Wheel was updated on October 20, 2026 and Ratio Calculation on October 12, 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.*