# fx12 vs Bullet Screen Scrolling

The clearest difference is in-app purchases: fx12 at none against Bullet Screen Scrolling's 1. fx12 also leads on ads (none vs shown) and iOS requirement (9.3 vs 11.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Bullet Screen Scrolling sells 1 one-off in-app purchase. fx12 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | fx12 | Bullet Screen Scrolling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fx12/id1089760330/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 38 MB | 74 MB |
| Requires iOS | **9.3** | 11.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Favionics](https://appshunter.io/developer/495997736) | [博 彭](https://appshunter.io/developer/1293268076) |

## What reviewers say

### fx12

[App page](https://appshunter.io/ios/app/fx12/id1089760330)

This utility app connects to specific hardware devices, allowing real-time viewing and modification of parameters like altimeter and GPS data. An optional smartwatch app extends functionality to display telemetry and control models remotely. Be aware that background location usage may impact battery life.

**Highlights:** View and change device parameters, Real-time altimeter data, Real-time GPS data, Optional Apple Watch app, Remote model control

**Features:** macOS Compatibility

**In-app purchases:** none


### Bullet Screen Scrolling

[App page](https://appshunter.io/ios/app/bullet-screen-scrolling/id6468079047)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BuyPro | $0.99 | one-time |


## Frequently asked questions

### Is fx12 free?

fx12 is free to download, with no in-app purchases.

### Is Bullet Screen Scrolling free?

Bullet Screen Scrolling is free to download, with in-app purchases available.

### Do fx12 or Bullet Screen Scrolling have ads?

Bullet Screen Scrolling shows ads; fx12 does not.

### Which is updated more often, fx12 or Bullet Screen Scrolling?

fx12 ships an update every 2 months, and Bullet Screen Scrolling every 2 months. Most recently, fx12 was updated on October 4, 2026 and Bullet Screen Scrolling on October 8, 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.*