# FIELD KIT Playback Engine vs Sound Terrain

The clearest difference is price: Sound Terrain at $1.99 against FIELD KIT Playback Engine's $9.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

FIELD KIT Playback Engine costs $9.99 and Sound Terrain $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FIELD KIT Playback Engine ships an update every 2 weeks, Sound Terrain every 11 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | FIELD KIT Playback Engine | Sound Terrain |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/field-kit-playback-engine/id6810484807/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Paid | — |
| Size | 12 MB | 3 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Field Tone Audio, LLC](https://appshunter.io/developer/1891479237) | [弢 张](https://appshunter.io/developer/6773991027) |

## What reviewers say

### FIELD KIT Playback Engine

[App page](https://appshunter.io/ios/app/field-kit-playback-engine/id6810484807)

Transform audio recordings into evolving textures, rhythms, and atmospheres. Create up to four independent playback windows with customizable speed, direction, and effects. Explore new sonic material from your recordings.

**Highlights:** Up to four independent playback windows, Variable playback speed and direction, Drive and filtering per window, Routable modulation sources, Save and recall .fieldkit files, Standalone app and AUv3 Audio Unit

**In-app purchases:** none


### Sound Terrain

[App page](https://appshunter.io/ios/app/sound-terrain/id6812715636)

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

**In-app purchases:** none


## Frequently asked questions

### Is FIELD KIT Playback Engine free?

FIELD KIT Playback Engine costs $9.99, with no in-app purchases.

### Is Sound Terrain free?

Sound Terrain costs $1.99, with no in-app purchases.

### Do FIELD KIT Playback Engine or Sound Terrain have ads?

Neither FIELD KIT Playback Engine nor Sound Terrain shows ads.

### Which is updated more often, FIELD KIT Playback Engine or Sound Terrain?

FIELD KIT Playback Engine ships an update every 2 weeks, and Sound Terrain every 11 days. Most recently, FIELD KIT Playback Engine was updated on October 29, 2026 and Sound Terrain on October 24, 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.*