# PD1 vs Guitar Tuner

The clearest difference is review sentiment: PD1 at 100% against Guitar Tuner's 50%. PD1 also leads on in-app purchases (none vs 3) and update cadence (every 6 days vs every 2 weeks). Guitar Tuner's advantage is price (Free vs $3.99). On ads, device support and iOS requirement there is nothing between them.

Guitar Tuner is free to download; PD1 costs $3.99 up front. Guitar Tuner sells 3 in-app purchases, starting at $4.99 per 7 days. PD1 asks for nothing beyond the download.

PD1 ships an update every 6 days, Guitar Tuner every 2 weeks. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PD1 | Guitar Tuner |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.7 (76 ratings)](https://appshunter.io/ios/app/guitar-tuner-stringo/id6502582234/reviews)** |
| Number of ratings | — | **76** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 10 MB | 220 MB |
| Requires iOS | **17.5** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pedro Yamada](https://appshunter.io/developer/1604183940) | [Tiny Boom Ltd.](https://appshunter.io/developer/1743737517) |

## 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


### Guitar Tuner

[App page](https://appshunter.io/ios/app/guitar-tuner-stringo/id6502582234)

This app helps musicians tune their instruments with precision using various modes and offers over 100 tuning options. It also includes drum beats for jamming and a metronome to keep rhythm.

**Highlights:** Precise instrument tuner, 100+ tuning options, Drum beats for jamming, Built-in metronome, Support for guitar, bass, ukulele, Left-handed mode

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Guitar Tuner Pro | $4.99 | per 7 days |
| Guitar Tuner Pro | $4.99 | per 7 days |
| Guitar Tuner Pro | $29.99 | per year |


## Frequently asked questions

### Is PD1 free?

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

### Is Guitar Tuner free?

Guitar Tuner is free to download, with in-app purchases available.

### Do PD1 or Guitar Tuner have ads?

Neither PD1 nor Guitar Tuner shows ads.

### Which is updated more often, PD1 or Guitar Tuner?

PD1 ships an update every 6 days, and Guitar Tuner every 2 weeks. Most recently, PD1 was updated on October 30, 2026 and Guitar Tuner on November 4, 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.*