# RDTap vs D

The clearest difference is update cadence: RDTap at fortnightly against D's every 2 months. RDTap also leads on iOS requirement (15.0 vs 17.0). On price, ads, 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.

RDTap ships an update fortnightly, D every 2 months. The most recent releases landed on July 7, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | RDTap | D |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 36 MB | 33 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RCF spa](https://appshunter.io/developer/1053268033) | [Yamaha Corporation](https://appshunter.io/developer/353469356) |

## What reviewers say

### RDTap

[App page](https://appshunter.io/ios/app/rdtap/id6739501408)

Control and configure SUB 90XX series subwoofers with access to internal parameters. Offers professionally tuned presets for seamless integration with top speakers and supports rapid setup for ground stacking or sub cluster configurations.

**Highlights:** Access internal subwoofer parameters, Advanced Crossover Engine (ACE) presets, Professionally tuned level and phase matching, Ground stacking and sub cluster configuration, Rapid setup for speaker designs

**Features:** macOS Compatibility

**In-app purchases:** none


### D

[App page](https://appshunter.io/ios/app/d-remote/id6745768913)

**In-app purchases:** none


## Frequently asked questions

### Is RDTap free?

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

### Is D free?

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

### Do RDTap or D have ads?

Neither RDTap nor D shows ads.

### Which is updated more often, RDTap or D?

RDTap ships an update fortnightly, and D every 2 months. Most recently, RDTap was updated on July 7, 2026 and D on September 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.*