Comparison

Sightlines vs FIELD KIT Playback Engine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sightlines

Shape sounds with a playable harmonic filter. Add motion, stereo spread, and unique textures to noise, samples, or synths. Tune it like a resonator or control it with MIDI for endless sonic possibilities.

Highlights
  • Harmonic filter bank
  • MIDI control
  • Sample loading
  • Noise and synth sound sources
  • Modulation capabilities
  • Built-in chorus, delay, and reverb
Features
Read full description

Make noise, texture, and percussion sing. Add motion and stereo spread to basic sounds. Load samples and sculpt them endlessly. Leave your mark on any sound with harmonic filtering. Sightlines is a playable harmonic filter. Built from a collection of resonant bandpass filters tuned to the harmonic series, designed to bring out a customizable set of musical frequencies in any sound. Tune it to a fixed frequency like a resonator, or send it MIDI to make it come alive as an instrument. Sightlines can be loaded as an instrument or an audio effect. As an instrument, use it with samples, noise, or oscillators to construct sounds never heard before. As an effect, add movement and interest to any sound, and even impart tonality onto unpitched input. SOUND SOURCES • Noise – filter variable color noise and random noise bursts for Sightlines’ simplest and quickest output. • Samples – send samples through resonant filters as one-shots or infinite looping versions of themselves, great for found sound and tonal samples alike. • Synth – skip the filters entirely and use Sightlines as a harmonic synth, where you can customize and modulate the proportion of each harmonic in the signal. • Audio effect – use Sightlines as an audio effect on any track. MOVEMENT AND EFFECTS • Manipulate overtones – stretch, bend, and reimagine the harmonic series to retune Sightlines’ output into realistic or indescribable sonic spaces. • Quantize frequencies – snap all of Sightlines’ filters to a scale, to impart that key quality onto any sound. • Balance bands – maneuver through the harmonic space by scanning, tilting, or spreading Sightlines’ bands. • End of chain – make your output shine with a built-in chorus, BBD-style delay, and reverb. FEATURES • Modulation – modify any control in Sightlines with multiple LFOs, sequencers, smooth random sources, and performance effects. • Presets – full preset control over every parameter in Sightlines. Cross-platform preset format for sharing with friends. • Waymaker – connect to Sightlines’ sibling application, Waymaker, for direct sequencing of Sightlines’ without MIDI routing. Also available for macOS and Windows in VST3 / AU / AAX formats from Aqeel Aadam Sound.

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.

Screenshots

Sightlines1 screens
FIELD KIT Playback Engine4 screens

Verdict

The call

The clearest difference is rating: Sightlines at 5.0 against FIELD KIT Playback Engine's 4.5. Sightlines also leads on review sentiment (100% vs 80%) and price ($7.99 vs $9.99). On ratings volume, update cadence, ads and in-app purchases 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

Sightlines costs $7.99 and FIELD KIT Playback Engine $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sightlines holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 6 and 4 respectively. Written reviews point the same way: 100% of Sightlines's written reviews are positive against 80% of FIELD KIT Playback Engine's.

UpkeepUpdate frequency

Sightlines ships an update weekly, FIELD KIT Playback Engine every 2 weeks. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Sightlines versus FIELD KIT Playback Engine: the parameters behind the verdict, then further details
ParameterSightlinesFIELD KIT Playback Engine
Price$7.99 — better$9.99
Rating5.0 (6 ratings) — better4.5 (4 ratings)
Positive reviews100.0% of reviews — better80.0% of reviews
Number of ratings6 — better4
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size19 MB12 MB
Age rating4+4+
DeveloperAqeel AadamField Tone Audio, LLC

Customer experience

Sightlines

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FIELD KIT Playback Engine

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

None

Sightlines

No in-app purchases

None

FIELD KIT Playback Engine

No in-app purchases

Questions

Is Sightlines free?
Sightlines costs $7.99, with no in-app purchases.
Is FIELD KIT Playback Engine free?
FIELD KIT Playback Engine costs $9.99, with no in-app purchases.
Which has better reviews, Sightlines or FIELD KIT Playback Engine?
Sightlines is rated higher. Sightlines averages 5.0 out of 5 from 6 ratings, while FIELD KIT Playback Engine averages 4.5 from 4 ratings.
Do Sightlines or FIELD KIT Playback Engine have ads?
Neither Sightlines nor FIELD KIT Playback Engine shows ads.
Which is updated more often, Sightlines or FIELD KIT Playback Engine?
Sightlines ships an update weekly, and FIELD KIT Playback Engine every 2 weeks. Most recently, Sightlines was updated on October 17, 2026 and FIELD KIT Playback Engine on October 5, 2026.

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