# Subnet Calculator + vs SJ IPv4 Calculator

The clearest difference is ads: Subnet Calculator + at none against SJ IPv4 Calculator's shown. SJ IPv4 Calculator's advantage is update cadence (weekly vs every 64 months) and iOS requirement (16.0 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Subnet Calculator + sells 4 one-off in-app purchases and SJ IPv4 Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Subnet Calculator + ships an update every 64 months, SJ IPv4 Calculator weekly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Subnet Calculator + | SJ IPv4 Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/subnet-calculator-plus/id445990645/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 64 months | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 4 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Steven Eppler](https://appshunter.io/developer/312274388) | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) |

## What reviewers say

### Subnet Calculator +

[App page](https://appshunter.io/ios/app/subnet-calculator-plus/id445990645)

This utility app simplifies network calculations for professionals and students. It offers tools for IPv4 and IPv6 subnetting, including live CIDR sliders and subnet splitting. Results can be easily shared or copied.

**Highlights:** IPv4 subnet calculator with CIDR slider, Subnet Splitter for VLSM, IPv6 calculator with prefix slider, Auto-detect device IP from Wi-Fi, Navigate adjacent subnets, Share or copy results, Native Mac support

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |
| Huge Tip | $9.99 | one-time |


### SJ IPv4 Calculator

[App page](https://appshunter.io/ios/app/sj-ipv4-calculator/id6503641575)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coffee | $0.99 | one-time |
| A cookie | $2.99 | one-time |
| A lemon tart | $4.99 | one-time |
| No ads | $4.99 | one-time |
| A pizza | $9.99 | one-time |


## Frequently asked questions

### Is Subnet Calculator + free?

Subnet Calculator + is free to download, with in-app purchases available.

### Is SJ IPv4 Calculator free?

SJ IPv4 Calculator is free to download, with in-app purchases available.

### Do Subnet Calculator + or SJ IPv4 Calculator have ads?

SJ IPv4 Calculator shows ads; Subnet Calculator + does not.

### Which is updated more often, Subnet Calculator + or SJ IPv4 Calculator?

Subnet Calculator + ships an update every 64 months, and SJ IPv4 Calculator weekly. Most recently, Subnet Calculator + was updated on November 1, 2026 and SJ IPv4 Calculator on October 30, 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.*