# OnScene Xplorer 4 vs respond+

The clearest difference is update cadence: respond+ at monthly against OnScene Xplorer 4's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OnScene Xplorer 4 ships an update every 3 months, respond+ monthly. The most recent releases landed on September 10, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | OnScene Xplorer 4 | respond+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 243 MB | 12 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Iron Compass Map Co](https://appshunter.io/developer/1237245091) | [Zco Corporation](https://appshunter.io/developer/422832850) |

## What reviewers say

### OnScene Xplorer 4

[App page](https://appshunter.io/ios/app/onscene-xplorer-4/id1562927434)

**Features:** macOS Compatibility

**In-app purchases:** none


### respond+

[App page](https://appshunter.io/ios/app/respond-plus/id1570504461)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OnScene Xplorer 4 free?

OnScene Xplorer 4 is free to download, with no in-app purchases.

### Is respond+ free?

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

### Do OnScene Xplorer 4 or respond+ have ads?

Neither OnScene Xplorer 4 nor respond+ shows ads.

### Which is updated more often, OnScene Xplorer 4 or respond+?

OnScene Xplorer 4 ships an update every 3 months, and respond+ monthly. Most recently, OnScene Xplorer 4 was updated on September 10, 2026 and respond+ on October 27, 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.*