# Perimeter Mobile vs CERA

The clearest difference is rating: CERA at 5.0 against Perimeter Mobile's 3.7. CERA also leads on update cadence (every 2 weeks vs every 2 months). Perimeter Mobile's advantage is device support (3 vs 1) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

CERA holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Perimeter Mobile ships an update every 2 months, CERA every 2 weeks. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Perimeter Mobile | CERA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/perimeter-mobile/id1562227654/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cera/id6741090954/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 80 MB | 121 MB |
| Requires iOS | **15.1** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Perimeter, Inc.](https://appshunter.io/developer/6780993903) | [CERA Software Inc.](https://appshunter.io/developer/1793019246) |

## What reviewers say

### Perimeter Mobile

[App page](https://appshunter.io/ios/app/perimeter-mobile/id1562227654)

This private software tool is licensed by government Public Safety agencies for internal use by authorized personnel. It is not available to the general public and does not provide access to government information or services.

**Highlights:** Internal use for Public Safety agencies, Restricted access for authorized personnel, Private software tool, Not for public use, Contact sales for department inquiries

**In-app purchases:** none


### CERA

[App page](https://appshunter.io/ios/app/cera/id6741090954)

This platform connects first responders in real-time during critical events. It automates tasks and provides a live overview to reduce chaos and confusion.

**Highlights:** Real-time connectivity for first responders, Automated task management, Live overview of critical events, Reduces chaos and confusion, Visual platform

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Perimeter Mobile free?

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

### Is CERA free?

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

### Which has better reviews, Perimeter Mobile or CERA?

CERA is rated higher. Perimeter Mobile averages 3.7 out of 5 from 3 ratings, while CERA averages 5.0 from 1 ratings.

### Do Perimeter Mobile or CERA have ads?

Neither Perimeter Mobile nor CERA shows ads.

### Which is updated more often, Perimeter Mobile or CERA?

Perimeter Mobile ships an update every 2 months, and CERA every 2 weeks. Most recently, Perimeter Mobile was updated on September 21, 2026 and CERA on June 1, 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.*