# blackbx vs Respondr PTT

The clearest difference is ads: Respondr PTT at none against blackbx's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

blackbx ships an update every 3 months, Respondr PTT every 2 months. Both last shipped on October 28, 2026.

## The numbers

| Metric | blackbx | Respondr PTT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 32 MB | 38 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Caligula Capital UG (haftungsbeschraenkt)](https://appshunter.io/developer/1805161107) | [Teleproject Srl](https://appshunter.io/developer/1818536505) |

## What reviewers say

### blackbx

[App page](https://appshunter.io/ios/app/blackbx/id6743937851)

**Features:** macOS Compatibility

**In-app purchases:** none


### Respondr PTT

[App page](https://appshunter.io/ios/app/respondr-ptt/id6746786206)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is blackbx free?

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

### Is Respondr PTT free?

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

### Do blackbx or Respondr PTT have ads?

blackbx shows ads; Respondr PTT does not.

### Which is updated more often, blackbx or Respondr PTT?

blackbx ships an update every 3 months, and Respondr PTT every 2 months. Most recently, blackbx was updated on October 28, 2026 and Respondr PTT on October 28, 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.*