Comparison

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.

Head to head
About

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.

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
Read full description

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.

About

Sound Terrain

Features
Read full description

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

FIELD KIT Playback Engine4 screens
Sound Terrain4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
FIELD KIT Playback Engine versus Sound Terrain: the parameters behind the verdict, then further details
ParameterFIELD KIT Playback EngineSound Terrain
Price$9.99$1.99 — better
Rating4.6 (5 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size12 MB3 MB
Age rating4+4+
DeveloperField Tone Audio, LLC弢 张

In-app purchases

None

FIELD KIT Playback Engine

No in-app purchases

None

Sound Terrain

No in-app purchases

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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