# BFOUR vs WatchDog Key

The clearest difference is in-app purchases: BFOUR at none against WatchDog Key's 2. BFOUR also leads on update cadence (monthly vs every 4 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. WatchDog Key sells 2 in-app purchases, starting at $2.99 per month. BFOUR asks for nothing beyond the download.

BFOUR ships an update monthly, WatchDog Key every 4 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BFOUR | WatchDog Key |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/bfour/id6605927934/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 61 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BFOUR](https://appshunter.io/developer/1761006180) | [LA Software](https://appshunter.io/developer/1863073729) |

## What reviewers say

### BFOUR

[App page](https://appshunter.io/ios/app/bfour/id6605927934)

This app connects to smart IoT devices like meat thermometers and hygro-thermometers. It offers guided cooking with preset meat types and doneness levels, and provides instant notifications for remote monitoring of your cooking and home environment.

**Highlights:** Connects to smart IoT devices, Guided cooking system, 12 USDA-referenced meat types, 5 doneness levels, Real-time alerts, Remote monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### WatchDog Key

[App page](https://appshunter.io/ios/app/watchdog-key/id6763904473)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WatchDog Premium · Monthly | $2.99 | per month |
| WatchDog Premium · Yearly | $24.99 | per year |


## Frequently asked questions

### Is BFOUR free?

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

### Is WatchDog Key free?

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

### Do BFOUR or WatchDog Key have ads?

Neither BFOUR nor WatchDog Key shows ads.

### Which is updated more often, BFOUR or WatchDog Key?

BFOUR ships an update monthly, and WatchDog Key every 4 months. Most recently, BFOUR was updated on October 24, 2026 and WatchDog Key on October 28, 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.*