# バド審 vs FeatherStep

The clearest difference is in-app purchases: バド審 at none against FeatherStep's 1. バド審 also leads on ads (none vs shown). FeatherStep's advantage is update cadence (weekly vs every 41 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. FeatherStep sells 1 in-app purchase, starting at $3.99 per month. バド審 asks for nothing beyond the download.

バド審 ships an update every 41 months, FeatherStep weekly. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | バド審 | FeatherStep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 41 months | **Weekly** |
| Monetization | Free | — |
| Size | 29 MB | 113 MB |
| Requires iOS | **13.4** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Kosei Suzuki](https://appshunter.io/developer/319693641) | [Longhong Chiang](https://appshunter.io/developer/1698889494) |

## What reviewers say

### バド審

[App page](https://appshunter.io/ios/app/lite/id1536902355)

This app assists badminton umpires by simplifying scorekeeping, service order tracking, and umpire calls. It aims to reduce stress for both novice and experienced officials, allowing them to focus on the game.

**Highlights:** Umpire call support, Easy score input, Automatic score sheet entry, Server/receiver tracking for doubles, Undo/Redo functionality, Score backup and transfer

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

**In-app purchases:** none


### FeatherStep

[App page](https://appshunter.io/ios/app/featherstep/id6452396712)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Ad-Free | $3.99 | per month |


## Frequently asked questions

### Is バド審 free?

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

### Is FeatherStep free?

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

### Do バド審 or FeatherStep have ads?

FeatherStep shows ads; バド審 does not.

### Which is updated more often, バド審 or FeatherStep?

バド審 ships an update every 41 months, and FeatherStep weekly. Most recently, バド審 was updated on October 7, 2026 and FeatherStep on October 2, 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.*