# PD1 vs Rhythm Trainer

The clearest difference is review sentiment: PD1 at 100% against Rhythm Trainer's 34%. Rhythm Trainer's advantage is price (Free vs $3.99) and iOS requirement (14.0 vs 17.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Rhythm Trainer is free to download; PD1 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PD1 ships an update every 6 days, Rhythm Trainer every 9 days. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | PD1 | Rhythm Trainer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.2 (95 ratings)](https://appshunter.io/ios/app/rhythm-trainer-ear-training/id6484503708/reviews)** |
| Number of ratings | — | **95** |
| Positive reviews | **100.0% of reviews** | 34.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | Paid | **Free** |
| Size | 10 MB | 52 MB |
| Requires iOS | 17.5 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Yamada](https://appshunter.io/developer/1604183940) | [Artem Popov](https://appshunter.io/developer/1520523644) |

## What reviewers say

### PD1

[App page](https://appshunter.io/ios/app/pd1-analog-delay/id6450869337)

This app simulates classic analog delay pedals, offering a meaner grit with a ladder filter and random delay-line noise. It's an audio-unit effect designed for musicians seeking unique delay sounds.

**Highlights:** Analog delay simulation, Ladder filter for meaner grit, Random delay-line noise, Audio-unit effect plugin, Classic pedal sound recreation

**Features:** Vision Pro support

**In-app purchases:** none


### Rhythm Trainer

[App page](https://appshunter.io/ios/app/rhythm-trainer-ear-training/id6484503708)

Develop your musical ear and rhythm skills with interactive exercises. Practice tapping along to diverse rhythmic patterns, track your progress, and set personalized goals. Suitable for musicians of all levels.

**Highlights:** Rhythm tapping practice, One and two-hand rhythm practice, Progress tracking, Proficiency monitoring, Personalized goal setting

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

**In-app purchases:** none


## Frequently asked questions

### Is PD1 free?

PD1 costs $3.99, with no in-app purchases.

### Is Rhythm Trainer free?

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

### Do PD1 or Rhythm Trainer have ads?

Neither PD1 nor Rhythm Trainer shows ads.

### Which is updated more often, PD1 or Rhythm Trainer?

PD1 ships an update every 6 days, and Rhythm Trainer every 9 days. Most recently, PD1 was updated on October 30, 2026 and Rhythm Trainer on November 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.*