# Thunder DSP vs SUBAMPBT

The clearest difference is iOS requirement: Thunder DSP at 11.0 against SUBAMPBT's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Thunder DSP ships an update every 5 days, SUBAMPBT every 3 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Thunder DSP | SUBAMPBT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 5 MB | 18 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AMERICAN PRO INTERNATIONAL CORP](https://appshunter.io/developer/1071760180) | [Formosa Audiomate](https://appshunter.io/developer/989721407) |

## What reviewers say

### Thunder DSP

[App page](https://appshunter.io/ios/app/thunder-dsp/id6744083152)

**Features:** macOS Compatibility

**In-app purchases:** none


### SUBAMPBT

[App page](https://appshunter.io/ios/app/subampbt-1/id6776954079)

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

**In-app purchases:** none


## Frequently asked questions

### Is Thunder DSP free?

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

### Is SUBAMPBT free?

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

### Do Thunder DSP or SUBAMPBT have ads?

Neither Thunder DSP nor SUBAMPBT shows ads.

### Which is updated more often, Thunder DSP or SUBAMPBT?

Thunder DSP ships an update every 5 days, and SUBAMPBT every 3 days. Most recently, Thunder DSP was updated on September 9, 2026 and SUBAMPBT on September 13, 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.*