# E vs Signal Scope Studio

The clearest difference is in-app purchases: E at none against Signal Scope Studio's 1. E also leads on iOS requirement (13.0 vs 26.2). Signal Scope Studio's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Signal Scope Studio sells 1 one-off in-app purchase. E asks for nothing beyond the download.

E ships an update every 3 weeks, Signal Scope Studio every 9 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | E | Signal Scope Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (8 ratings)](https://appshunter.io/ios/app/e-goods/id6751827839/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 5.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 28 MB | 14 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [guang dong wan long zhi neng dian zi you xian](https://appshunter.io/developer/1837081421) | [Koji Hasegawa](https://appshunter.io/developer/1125823867) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-goods/id6751827839)

Easily transfer photos and videos from your phone to an electronic badge for display via Bluetooth. The app accesses your Bluetooth, photos, and camera to facilitate this transfer, keeping your data local to your device and badge.

**Highlights:** Bluetooth photo and video transfer, Display content on electronic badges, Access to phone's photo album, Camera function integration, Data stored locally

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

**In-app purchases:** none


### Signal Scope Studio

[App page](https://appshunter.io/ios/app/signal-scope-studio/id6801408561)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WaveScope Full Access | $9.99 | one-time |


## Frequently asked questions

### Is E free?

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

### Is Signal Scope Studio free?

Signal Scope Studio is free to download, with in-app purchases available.

### Do E or Signal Scope Studio have ads?

Neither E nor Signal Scope Studio shows ads.

### Which is updated more often, E or Signal Scope Studio?

E ships an update every 3 weeks, and Signal Scope Studio every 9 days. Most recently, E was updated on October 24, 2026 and Signal Scope Studio on October 24, 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.*