Ketuk Cengceng vs Sightlines
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ketuk Cengceng
Experience the authentic sounds of Balinese Gamelan music with this app. It features meticulously sampled instruments, realistic playing interactions, and high-quality visuals. Enjoy an ad-free, low-latency audio experience designed for both learning and playing.
- Authentic sampled instrument sounds
- Realistic user interaction
- Low-latency audio playback
- High-quality instrument photos
- Zoomable instrument views
- Customizable cipher notations
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World's first iPhone/iPad implementation of the main instruments of a Balinese Gamelan Gong Kebyar! Ketuk (also called Kempli) and Cengceng are instruments of the Balinese Gamelan Gong Kebyar that marks the rhythm of the music. Ketuk divides the cycle into regular beats and Cengceng subdivides the beats. * Authentic sound bank sampled directly from real instruments * User interaction designed to replicate true playing experience * Playing sound can be stopped --- essential for Gamelan! * High-quality photos showcasing real instruments * Optimized for ultra-low latency audio playback * Zoomable views for detailed instrument exploration * Customizable display of cipher notations to suit your preferences * Completely ad-free for uninterrupted enjoyment
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.
- Harmonic filter bank
- MIDI control
- Sample loading
- Noise and synth sound sources
- Modulation capabilities
- Built-in chorus, delay, and reverb
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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.
Screenshots
Verdict
The clearest difference is review sentiment: Sightlines at 100% against Ketuk Cengceng's 0%. Sightlines also leads on rating (5.0 vs 1.0) and update cadence (weekly vs every 26 months). Ketuk Cengceng's advantage is price ($2.99 vs $7.99). On ads, in-app purchases, monetization model 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
Ketuk Cengceng costs $2.99 and Sightlines $7.99 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 1.0. That said, the two scores are not equally well evidenced: Sightlines has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Ketuk Cengceng's written reviews are positive against 100% of Sightlines's.
Ketuk Cengceng ships an update every 26 months, Sightlines weekly. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.
| Parameter | Ketuk Cengceng | Sightlines |
|---|---|---|
| Price | $2.99 — better | $7.99 |
| Rating | 1.0 (1 ratings) | 5.0 (9 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 9 — better |
| Update frequency | Every 26 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | emacsian Company Limited | Aqeel Aadam |
Customer experience
Ketuk Cengceng
Sightlines
In-app purchases
Ketuk Cengceng
No in-app purchases
Sightlines
No in-app purchases









