# RAPT vs Spectra Hub

The clearest difference is ads: RAPT at none against Spectra Hub's shown. RAPT also leads on iOS requirement (13.2 vs 15.6). 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.

RAPT ships an update every 4 months, Spectra Hub every 3 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RAPT | Spectra Hub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (23 ratings)](https://appshunter.io/ios/app/rapt/id1573192994/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 14.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 68 MB | 33 MB |
| Requires iOS | **13.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kegland Distribution Pty Ltd](https://appshunter.io/developer/1573192996) | [Marine Spectra Pty Ltd](https://appshunter.io/developer/1826997426) |

## What reviewers say

### RAPT

[App page](https://appshunter.io/ios/app/rapt/id1573192994)

This app provides total fermentation control through internet-enabled technology. It allows for real-time logging, access, and control of RAPT-enabled products from any device, making it ideal for various fermentation needs like beer, wine, and kimchi making.

**Highlights:** Total fermentation control, Internet enabled IoT, Real-time logging, Real-time access, Real-time control, Seamless device integration

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

**In-app purchases:** none


### Spectra Hub

[App page](https://appshunter.io/ios/app/spectra-hub/id6748683837)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RAPT free?

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

### Is Spectra Hub free?

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

### Do RAPT or Spectra Hub have ads?

Spectra Hub shows ads; RAPT does not.

### Which is updated more often, RAPT or Spectra Hub?

RAPT ships an update every 4 months, and Spectra Hub every 3 months. Most recently, RAPT was updated on November 3, 2026 and Spectra Hub 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.*