# Panic Button U vs Kalamaria Smart City

The clearest difference is update cadence: Panic Button U at every 8 days against Kalamaria Smart City's every 2 months. Panic Button U also leads on iOS requirement (12.1 vs 15.0). 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.

Panic Button U ships an update every 8 days, Kalamaria Smart City every 2 months. Both last shipped on September 20, 2026.

## The numbers

| Metric | Panic Button U | Kalamaria Smart City |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 months |
| Size | 58 MB | 25 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ULTIMA Enterprise Doo](https://appshunter.io/developer/448167316) | [Dotsoft](https://appshunter.io/developer/413248745) |

## What reviewers say

### Panic Button U

[App page](https://appshunter.io/ios/app/panic-button-u/id1481809899)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kalamaria Smart City

[App page](https://appshunter.io/ios/app/kalamaria-smart-city/id1636659266)

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

**In-app purchases:** none


## Frequently asked questions

### Is Panic Button U free?

Panic Button U is free to download, with no in-app purchases.

### Is Kalamaria Smart City free?

Kalamaria Smart City is free to download, with no in-app purchases.

### Do Panic Button U or Kalamaria Smart City have ads?

Neither Panic Button U nor Kalamaria Smart City shows ads.

### Which is updated more often, Panic Button U or Kalamaria Smart City?

Panic Button U ships an update every 8 days, and Kalamaria Smart City every 2 months. Most recently, Panic Button U was updated on September 20, 2026 and Kalamaria Smart City on September 20, 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.*