# BU01 Reader vs Wonder Radar

The clearest difference is in-app purchases: BU01 Reader at none against Wonder Radar's 1. BU01 Reader also leads on iOS requirement (9.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Wonder Radar sells 1 in-app purchase, starting at $1.99 per month. BU01 Reader asks for nothing beyond the download.

BU01 Reader ships an update every 2 months, Wonder Radar every 5 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | BU01 Reader | Wonder Radar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 1 MB | 12 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [育明 李](https://appshunter.io/developer/572761656) | [小利 薛](https://appshunter.io/developer/1675817893) |

## What reviewers say

### BU01 Reader

[App page](https://appshunter.io/ios/app/bu01-reader/id1435757804)

**Features:** macOS Compatibility

**In-app purchases:** none


### Wonder Radar

[App page](https://appshunter.io/ios/app/wonder-radar-device-tracker/id6762002636)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Subscription Service | $1.99 | per month |


## Frequently asked questions

### Is BU01 Reader free?

BU01 Reader is free to download, with no in-app purchases.

### Is Wonder Radar free?

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

### Do BU01 Reader or Wonder Radar have ads?

Neither BU01 Reader nor Wonder Radar shows ads.

### Which is updated more often, BU01 Reader or Wonder Radar?

BU01 Reader ships an update every 2 months, and Wonder Radar every 5 months. Most recently, BU01 Reader was updated on October 12, 2026 and Wonder Radar on October 14, 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.*