# Wuufi Tracker vs BK400

The clearest difference is update cadence: BK400 at weekly against Wuufi Tracker's monthly. Wuufi Tracker's advantage is iOS requirement (13.0 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.

Wuufi Tracker ships an update monthly, BK400 weekly. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Wuufi Tracker | BK400 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/wuufi-tracker/id6739414790/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 61 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Rontex Technology Co., Ltd.](https://appshunter.io/developer/1785139311) | [祖策 谢](https://appshunter.io/developer/983519195) |

## What reviewers say

### Wuufi Tracker

[App page](https://appshunter.io/ios/app/wuufi-tracker/id6739414790)

This device accessory helps you keep your pet safe with nationwide GPS tracking and virtual fencing. Receive instant alerts if your pet leaves a designated area, and easily locate them with real-time updates. The durable, waterproof collar boasts a long battery life for continuous peace of mind.

**Highlights:** Nationwide GPS tracking, Virtual fence setup, Instant escape alerts, Real-time location updates, Durable and waterproof design, Long battery life (up to 1 month)

**Features:** macOS Compatibility

**In-app purchases:** none


### BK400

[App page](https://appshunter.io/ios/app/bk400/id6760681499)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wuufi Tracker free?

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

### Is BK400 free?

BK400 is free to download, with no in-app purchases.

### Do Wuufi Tracker or BK400 have ads?

Neither Wuufi Tracker nor BK400 shows ads.

### Which is updated more often, Wuufi Tracker or BK400?

Wuufi Tracker ships an update monthly, and BK400 weekly. Most recently, Wuufi Tracker was updated on October 17, 2026 and BK400 on October 10, 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.*