# Who's Responding? vs Viaesys InstallTrack

The clearest difference is update cadence: Who's Responding? at fortnightly against Viaesys InstallTrack's every 26 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.

Who's Responding? ships an update fortnightly, Viaesys InstallTrack every 26 months. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Who's Responding? | Viaesys InstallTrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (7 ratings)](https://appshunter.io/ios/app/whos-responding/id951921253/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 31.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 26 months |
| Monetization | Subscription | — |
| Size | 133 MB | 27 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fluent Information Management Systems, Inc.](https://appshunter.io/developer/951921252) | [Viaesys Inc.](https://appshunter.io/developer/1100781721) |

## What reviewers say

### Who's Responding?

[App page](https://appshunter.io/ios/app/whos-responding/id951921253)

This app facilitates rapid alerting and coordination for specialized teams, groups, and individuals. It offers customizable notifications, real-time tracking, and access to digital resources for efficient incident response and operational management.

**Highlights:** Customized notifications, Real-time tracking, Navigation to incident locations, Live radio streaming, Hands-free alert speaking, Mapping tools, Digital resource access

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great app for firefighters
- 🚀 Fast alerts, often before pagers
- 💡 Good communication and member coordination
- 💡 Customizability for specific needs
- 💡 New features and improvements noted

**What reviewers complain about**

- 🐛 Unreliable notifications/alerts
- 🐛 App crashes frequently
- 🐛 Black screen issues
- 🐛 App freezes or won't load
- 🐛 Auto radio function unreliable

**Reported bugs**

- App not alerting to incidents/calls
- Auto radio function not turning on
- Locked out of active departments after resigning from one
- App not loading after last update
- App not notifying phone or watch of pages

**Requested features**

- Add something for repeat addresses
- Add a feature to see who is available on the main screen
- Apple Watch app for availability status
- History of calls and attendance tracking
- Option to listen to different departments within the county


### Viaesys InstallTrack

[App page](https://appshunter.io/ios/app/viaesys-installtrack/id6451205906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Who's Responding? free?

Who's Responding? is free to download, with no in-app purchases.

### Is Viaesys InstallTrack free?

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

### Do Who's Responding? or Viaesys InstallTrack have ads?

Neither Who's Responding? nor Viaesys InstallTrack shows ads.

### Which is updated more often, Who's Responding? or Viaesys InstallTrack?

Who's Responding? ships an update fortnightly, and Viaesys InstallTrack every 26 months. Most recently, Who's Responding? was updated on October 22, 2026 and Viaesys InstallTrack on October 10, 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.*