# OX | Amp Top Box vs BOSS Effect Loader

The clearest difference is in-app purchases: OX | Amp Top Box at none against BOSS Effect Loader's 8. OX | Amp Top Box also leads on iOS requirement (12.0 vs 15.6). BOSS Effect Loader's advantage is ads (none vs shown) and device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. BOSS Effect Loader sells 8 one-off in-app purchases. OX | Amp Top Box asks for nothing beyond the download.

OX | Amp Top Box holds the better App Store score, 3.7 against 3.5. Both are backed by a comparable volume of ratings — 22 and 8 respectively. Written reviews complicate that: 38% of OX | Amp Top Box's written reviews are positive against 42% of BOSS Effect Loader's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | OX | Amp Top Box | BOSS Effect Loader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (22 ratings)](https://appshunter.io/ios/app/ox-amp-top-box/id980695701/reviews)** | [3.5 (8 ratings)](https://appshunter.io/ios/app/boss-effect-loader/id6736950276/reviews) |
| Number of ratings | **22** | 8 |
| Positive reviews | 37.5% of reviews | **41.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 71 MB | 3 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Universal Audio](https://appshunter.io/developer/980695700) | [Roland Corporation](https://appshunter.io/developer/387333694) |

## What reviewers say

### OX | Amp Top Box

[App page](https://appshunter.io/ios/app/ox-amp-top-box/id980695701)

Control your tube amp's legendary tone from anywhere with this companion app. Access a virtual studio of speaker cabinets, microphones, and effects to craft album-quality guitar sounds. Store your custom presets directly to your hardware.

**Highlights:** Full Rig control via Wi-Fi, 120+ Rig presets, 22 classic speaker cabinets, Boutique mic combinations, Studio amp tone effects, Custom preset storage

**In-app purchases:** none


### BOSS Effect Loader

[App page](https://appshunter.io/ios/app/boss-effect-loader/id6736950276)

This application allows users to load effects into the PX-1 Plugout FX device. It offers a selection of free effects and the option to purchase additional model passes within the app. An internet connection and Roland Account are required for full functionality.

**Highlights:** Load effects into PX-1 Plugout FX, 16 free effect models included, Purchase additional model passes, Bluetooth or USB connection, Requires Roland Account

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PW-2 Power Driver | $9.99 | one-time |
| XT-2 Xtortion | $9.99 | one-time |
| CS-2 Compression Sustainer | $9.99 | one-time |
| DM-2 Delay | $9.99 | one-time |
| DC-2 Dimension C | $9.99 | one-time |
| OD-2 TURBO OverDrive | $9.99 | one-time |
| Bundle for PW-2/XT-2/CS-2 | $19.99 | one-time |
| Bundle for OD-2/DC-2/DM-2 | $19.99 | one-time |


## Frequently asked questions

### Is OX | Amp Top Box free?

OX | Amp Top Box is free to download, with no in-app purchases.

### Is BOSS Effect Loader free?

BOSS Effect Loader is free to download, with in-app purchases available.

### Which has better reviews, OX | Amp Top Box or BOSS Effect Loader?

OX | Amp Top Box is rated higher. OX | Amp Top Box averages 3.7 out of 5 from 22 ratings, while BOSS Effect Loader averages 3.5 from 8 ratings.

### Do OX | Amp Top Box or BOSS Effect Loader have ads?

OX | Amp Top Box shows ads; BOSS Effect Loader does not.

### Which is updated more often, OX | Amp Top Box or BOSS Effect Loader?

OX | Amp Top Box ships an update every 5 months, and BOSS Effect Loader every 5 months. Most recently, OX | Amp Top Box was updated on October 24, 2026 and BOSS Effect Loader 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.*