# SJ IPv4 Calculator vs ProSendi

The clearest difference is in-app purchases: ProSendi at none against SJ IPv4 Calculator's 5. ProSendi also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.0). SJ IPv4 Calculator's advantage is update cadence (weekly vs every 4 months). On price and device support there is nothing between them.

Both are free to download. SJ IPv4 Calculator sells 5 one-off in-app purchases. ProSendi asks for nothing beyond the download.

SJ IPv4 Calculator ships an update weekly, ProSendi every 4 months. The most recent releases landed on October 25, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | SJ IPv4 Calculator | ProSendi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 4 months |
| Size | 4 MB | 28 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) | [1Simple1](https://appshunter.io/developer/1636645283) |

## What reviewers say

### 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 |


### ProSendi

[App page](https://appshunter.io/ios/app/prosendi/id6756793196)

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

**In-app purchases:** none


## Frequently asked questions

### Is SJ IPv4 Calculator free?

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

### Is ProSendi free?

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

### Do SJ IPv4 Calculator or ProSendi have ads?

SJ IPv4 Calculator shows ads; ProSendi does not.

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

SJ IPv4 Calculator ships an update weekly, and ProSendi every 4 months. Most recently, SJ IPv4 Calculator was updated on October 25, 2026 and ProSendi on September 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.*