# PD1 vs Fishtail

The clearest difference is review sentiment: PD1 at 100% against Fishtail's 50%. PD1 also leads on price ($3.99 vs $14.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

PD1 costs $3.99 and Fishtail $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PD1 ships an update every 6 days, Fishtail every 3 days. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PD1 | Fishtail |
| --- | --- | --- |
| Price | **$3.99** | $14.99 |
| Rating | — | **[4.4 (7 ratings)](https://appshunter.io/ios/app/fishtail/id6790423528/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | Paid | Paid |
| Size | 10 MB | 37 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Yamada](https://appshunter.io/developer/1604183940) | [AMY NICOLA MCBRIDE](https://appshunter.io/developer/6790423530) |

## 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


### Fishtail

[App page](https://appshunter.io/ios/app/fishtail/id6790423528)

This app generates complete musical forms using algorithmic composition based on music theory. Users can shape, perform, and rearrange these compositions, routing seven musical channels to their chosen instruments via MIDI. It offers extensive control over keys, modes, and expressive elements.

**Highlights:** Algorithmic music generation, Multi-section compositions, Seven-channel MIDI output, Retain, reorder, and perform Takes, Multiple intonation systems, AUv3 MIDI plug-in support, Ableton Link integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PD1 free?

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

### Is Fishtail free?

Fishtail costs $14.99, with no in-app purchases.

### Do PD1 or Fishtail have ads?

Neither PD1 nor Fishtail shows ads.

### Which is updated more often, PD1 or Fishtail?

PD1 ships an update every 6 days, and Fishtail every 3 days. Most recently, PD1 was updated on October 15, 2026 and Fishtail on October 25, 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.*