Comparison

Digitron Synthesizer vs Sightlines

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

Head to head
About

Digitron Synthesizer

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Digitron is a virtual analog monophonic synthesizer inspired by Korg Monotron and Moog Mavis, but more powerful. It has 16 step sequencer with pattern chaining and sync with Pocket Operator. With patchbay you can connect any module output to any module input, feel free for experiments. Features: two oscillators with four different waveforms(SQUARE, SAW, SINE, TRIANGLE) with octave and detune control two-channel mixer with voltage control low pass filter with resonance ADSR and AR envelope generators two LFOs ( can be used as oscillators) two VCA as well as, a noise generator, sample and hold module, and quantizer the virtual oscilloscope shows generated sound waveforms 16-step sequencer with pattern chaining and Pocket Operator synchronization Midi keyboard support Be free to suggest new features by email or comments. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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
Currently charting
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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 sequencing and additional control over the pitch of Sightlines’ output. Also available for macOS and Windows in VST3 / AU / AAX formats from Aqeel Aadam Sound.

Screenshots

Digitron Synthesizer4 screens
Sightlines1 screens

Verdict

The call

The clearest difference is price: Digitron Synthesizer at Free against Sightlines's $7.99. Digitron Synthesizer also leads on update cadence (daily vs every 5 days). Sightlines's advantage is in-app purchases (none vs 3) and chart position (#110 vs unranked). On ads 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

Digitron Synthesizer is free to download; Sightlines costs $7.99 up front. Digitron Synthesizer sells 3 in-app purchases, starting at $0.99 per month. Sightlines asks for nothing beyond the download.

UpkeepUpdate frequency

Digitron Synthesizer ships an update daily, Sightlines every 5 days. The most recent releases landed on September 19, 2026 and September 13, 2026 respectively.

Scorecard5 real differences · 6 level
Digitron Synthesizer versus Sightlines: the parameters behind the verdict, then further details
ParameterDigitron SynthesizerSightlines
PriceFree — better$7.99
Rating—5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyDaily — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
Best chart rank—#110 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size117 MB18 MB
Age rating4+4+
DeveloperEvgenii PetrovAqeel Aadam

In-app purchases

3 purchases

Digitron Synthesizer

Subscriptions2
  • Pro Subscription Month$0.991 Month
  • Pro Subscription Year$7.991 Year
One-time1
  • Pro Unlock$9.99
None

Sightlines

No in-app purchases

Questions

Is Digitron Synthesizer free?
Digitron Synthesizer is free to download, with in-app purchases available.
Is Sightlines free?
Sightlines costs $7.99, with no in-app purchases.
Do Digitron Synthesizer or Sightlines have ads?
Neither Digitron Synthesizer nor Sightlines shows ads.
Which is updated more often, Digitron Synthesizer or Sightlines?
Digitron Synthesizer ships an update daily, and Sightlines every 5 days. Most recently, Digitron Synthesizer was updated on September 19, 2026 and Sightlines on September 13, 2026.

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