# K5 Alarm vs ColdStart

The clearest difference is in-app purchases: K5 Alarm at none against ColdStart's 1. K5 Alarm also leads on iOS requirement (8.0 vs 26.1). ColdStart's advantage is update cadence (daily vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. ColdStart sells 1 one-off in-app purchase. K5 Alarm asks for nothing beyond the download.

K5 Alarm ships an update fortnightly, ColdStart daily. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | K5 Alarm | ColdStart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/k5-alarm/id1228448767/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | — |
| Size | 55 MB | 39 MB |
| Requires iOS | **8.0** | 26.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [传林 方](https://appshunter.io/developer/699727053) | [Mehmet Cakmaz](https://appshunter.io/developer/6772245895) |

## What reviewers say

### K5 Alarm

[App page](https://appshunter.io/ios/app/k5-alarm/id1228448767)

This integrated alarm host connects via GSM and Wi-Fi, offering control through phone calls, SMS, or a dedicated mobile app. It supports various accessories like remote controls and door sensors, sending instant notifications to your phone in emergencies.

**Highlights:** GSM + WIFI dual network integration, Control via phone call, SMS, or app, Supports remote controls, door sensors, and infrared accessories, Instant emergency notifications, 5-inch color screen interface

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

**In-app purchases:** none


### ColdStart

[App page](https://appshunter.io/ios/app/coldstart-engine-alarm-clock/id6787444544)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Car Engines | $6.99 | one-time |


## Frequently asked questions

### Is K5 Alarm free?

K5 Alarm is free to download, with no in-app purchases.

### Is ColdStart free?

ColdStart is free to download, with in-app purchases available.

### Do K5 Alarm or ColdStart have ads?

Neither K5 Alarm nor ColdStart shows ads.

### Which is updated more often, K5 Alarm or ColdStart?

K5 Alarm ships an update fortnightly, and ColdStart daily. Most recently, K5 Alarm was updated on October 13, 2026 and ColdStart on October 9, 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.*