# SJ IPv4 Calculator vs 车联网+智管

The clearest difference is in-app purchases: 车联网+智管 at none against SJ IPv4 Calculator's 5. 车联网+智管 also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.0). SJ IPv4 Calculator's advantage is update cadence (weekly vs every 3 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. 车联网+智管 asks for nothing beyond the download.

SJ IPv4 Calculator ships an update weekly, 车联网+智管 every 3 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | SJ IPv4 Calculator | 车联网+智管 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 months |
| Size | 4 MB | 121 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) | [伟骏 吴](https://appshunter.io/developer/1116031949) |

## 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 |


### 车联网+智管

[App page](https://appshunter.io/ios/app/plus/id6747071039)

**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 车联网+智管 free?

车联网+智管 is free to download, with no in-app purchases.

### Do SJ IPv4 Calculator or 车联网+智管 have ads?

SJ IPv4 Calculator shows ads; 车联网+智管 does not.

### Which is updated more often, SJ IPv4 Calculator or 车联网+智管?

SJ IPv4 Calculator ships an update weekly, and 车联网+智管 every 3 months. Most recently, SJ IPv4 Calculator was updated on October 7, 2026 and 车联网+智管 on October 7, 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.*