FIELD KIT Playback Engine vs Sound Terrain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FIELD KIT Playback Engine
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.
- 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
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FIELD KIT is an audio playback instrument built for turning recorded sound into evolving texture, rhythm, and atmosphere. Load an audio file and create up to four independent playback windows across the recording. Each window can move through a different section of the source with its own playback speed, direction, crossfade, drive, filtering, level, and pan. Use FIELD KIT to pull overlapping textures from long field recordings, transform environmental sound into ambient beds, create asynchronous loops, or find entirely new material hidden inside a recording. Three modulation sources can be routed independently across the playback windows, allowing parameters to drift, pulse, and evolve over time. Features include: - Up to four independent playback windows - Forward, reverse, and ping-pong playback - Variable playback speed - Adjustable loop crossfade - Drive and filtering per window - Independent level and pan controls - Three routable modulation sources - SPLICE for working with multiple audio sources - Save and recall .fieldkit files to share across platforms - Internal recording in Standalone mode - Standalone app and AUv3 Audio Unit - Host transport support in compatible AUv3 hosts FIELD KIT was designed around a simple idea: a recording doesn't have to be played from beginning to end. It can be a place to explore.
Sound Terrain
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Sound Terrain turns a field of colored cells into a small instrument. Tap to switch notes on and off, brush across the surface to strum, or hold to capture up to eight seconds of sound and release it across the terrain. Explore dust, wind, clicks, drones, bells and plucks. Spread two fingers to reshape a short tape loop. Draw an L for an echo, or trace a circle to leave a repeating phrase. Double-tap to mute a sound type. Your samples return as scattered grains, reverse playback and vocoder-like textures. Use rec to record a performance, then save or share the audio. Tilt your iPhone to send particles through the field, or enable camera brightness control to change speed and pitch by covering and uncovering the lens. Choose a palette or let colors follow the time of day. English and Chinese interfaces are included. Sound synthesis and recording work offline. No account, advertising or subscription. Microphone, camera and motion controls are optional. Samples are temporary and cleared by reset or closing the app process; exported performances remain wherever you save them. Playback pauses in the background.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | FIELD KIT Playback Engine | Sound Terrain |
|---|---|---|
| Price | $9.99 | $1.99 — better |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Field Tone Audio, LLC | 弢 张 |
In-app purchases
FIELD KIT Playback Engine
No in-app purchases
Sound Terrain
No in-app purchases
Questions
Is FIELD KIT Playback Engine free?
Is Sound Terrain free?
Do FIELD KIT Playback Engine or Sound Terrain have ads?
Which is updated more often, FIELD KIT Playback Engine or Sound Terrain?
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