# JMS PreBooking vs ResponderApp

The clearest difference is iOS requirement: JMS PreBooking at 10.0 against ResponderApp's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

JMS PreBooking ships an update every 6 weeks, ResponderApp monthly. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JMS PreBooking | ResponderApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (52 ratings)](https://appshunter.io/ios/app/responderapp/id1569640151/reviews)** |
| Number of ratings | — | **52** |
| Positive reviews | — | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | — | Free |
| Size | 82 MB | 44 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Southern Software, Inc.](https://appshunter.io/developer/377450203) | [Extra Duty Solutions](https://appshunter.io/developer/1569640153) |

## What reviewers say

### JMS PreBooking

[App page](https://appshunter.io/ios/app/jms-prebooking/id1502163275)

**Features:** macOS Compatibility

**In-app purchases:** none


### ResponderApp

[App page](https://appshunter.io/ios/app/responderapp/id1569640151)

This app provides a streamlined platform for agencies utilizing Xtra Duty or Extra Duty Solutions. It offers a convenient way to manage off-duty work and related administrative tasks.

**Highlights:** Off-duty work management, Agency integration, Streamlined administration, Xtra Duty support, Extra Duty Solutions partner

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

**In-app purchases:** none


## Frequently asked questions

### Is JMS PreBooking free?

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

### Is ResponderApp free?

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

### Do JMS PreBooking or ResponderApp have ads?

Neither JMS PreBooking nor ResponderApp shows ads.

### Which is updated more often, JMS PreBooking or ResponderApp?

JMS PreBooking ships an update every 6 weeks, and ResponderApp monthly. Most recently, JMS PreBooking was updated on October 2, 2026 and ResponderApp on October 24, 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.*