# First Due Mobile vs Serusi

The clearest difference is update cadence: Serusi at fortnightly against First Due Mobile's every 7 months. Serusi also leads on iOS requirement (15.6 vs 17.0). 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.

First Due Mobile ships an update every 7 months, Serusi fortnightly. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | First Due Mobile | Serusi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (10 ratings)](https://appshunter.io/ios/app/first-due-mobile-fedramp/id6670145457/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 224 MB | 53 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Locality Media, Inc.](https://appshunter.io/developer/1355085433) | [Serusi](https://appshunter.io/developer/1822337870) |

## What reviewers say

### First Due Mobile

[App page](https://appshunter.io/ios/app/first-due-mobile-fedramp/id6670145457)

Receive instant incident notifications and navigate emergency scenes with advanced routing. Access integrated building data, pre-plans, and real-time unit tracking for enhanced situational awareness and team communication.

**Highlights:** Incident tracking and notification, Emergency response routing, Integrated building data, Pre-incident planning and mapping, Team chat and communication, Live unit tracking

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

**In-app purchases:** none


### Serusi

[App page](https://appshunter.io/ios/app/serusi/id6747683135)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is First Due Mobile free?

First Due Mobile is free to download, with no in-app purchases.

### Is Serusi free?

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

### Do First Due Mobile or Serusi have ads?

Neither First Due Mobile nor Serusi shows ads.

### Which is updated more often, First Due Mobile or Serusi?

First Due Mobile ships an update every 7 months, and Serusi fortnightly. Most recently, First Due Mobile was updated on October 24, 2026 and Serusi on October 13, 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.*