# Sightlines vs FIELD KIT Playback Engine

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.

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.

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.

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.

## The numbers

| Metric | Sightlines | FIELD KIT Playback Engine |
| --- | --- | --- |
| Price | **$7.99** | $9.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031/reviews)** | [4.5 (4 ratings)](https://appshunter.io/ios/app/field-kit-playback-engine/id6810484807/reviews) |
| Number of ratings | **6** | 4 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Paid | Paid |
| Size | 19 MB | 12 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aqeel Aadam](https://appshunter.io/developer/1724235864) | [Field Tone Audio, LLC](https://appshunter.io/developer/1891479237) |

## What reviewers say

### Sightlines

[App page](https://appshunter.io/ios/app/sightlines-harmonic-filter/id6801937031)

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:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*