Comparison

sinusedo vs éist

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

Head to head
About

sinusedo

This app is a versatile sinewave synthesizer available as a standalone application and AUv3 plugin. It offers two independent keyboards with extensive control over note parameters, polyphony, and modulation, supporting MIDI input for external control.

Highlights
  • Dual independent keyboards
  • Microtonal tuning
  • Ring modulator per voice
  • Adjustable polyphony (up to 144 voices)
  • MIDI input support
  • Note deviation display (cents)
  • Glide and velocity control
Features
Read full description

'sinusedo' is a sinewave synthesizer in standalone and AUv3 formats. It features two independent keyboards with: • 4 – 72 keys (voices, steps) per octave, each with its own ring modulator • maximum polyphony equal to the number of voices; max polyphony is 144 voices • 1 – 4 octave range, covering the frequency range of about 8 – 4200 Hz • display with note number (from C), note name, frequency (in Hz), and deviation from 12-TET (in cents) • two sections per keyboard: upper for non-sustained notes, gliding, and velocity; lower for sustained notes and modulation rate • mute button to stop/start all sound • delete/panic button to erase all notes • glide button for smooth sweeps across keyboard frequency range • modulation on/off button • slider to set initial velocity and modulation levels • slider to change velocity and modulation rates for all notes on the keyboard proportionally and to show current velocity and mod rate levels • button to toggle keyboard visibility. sinusedo supports MIDI input from external sources to control each keyboard independently. Supported devices: iPad, iPhone

About

éist

Features
Read full description

Listen to the éist radio stream, browse the schedule, and find old shows that you missed.

Screenshots

sinusedo3 screens
éist3 screens

Verdict

The call

The clearest difference is price: éist at Free against sinusedo's $3.99. éist also leads on update cadence (every 3 days vs weekly). On ads, in-app purchases, device support and iOS requirement 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

éist is free to download; sinusedo costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

sinusedo ships an update weekly, éist every 3 days. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 8 level
sinusedo versus éist: the parameters behind the verdict, then further details
Parametersinusedoéist
Price$3.99Free — better
Rating4.7 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size11 MB32 MB
Age rating4+4+
DeveloperAlexey NadzharovAidan Reilly

In-app purchases

None

sinusedo

No in-app purchases

None

éist

No in-app purchases

Questions

Is sinusedo free?
sinusedo costs $3.99, with no in-app purchases.
Is éist free?
éist is free to download, with no in-app purchases.
Do sinusedo or éist have ads?
Neither sinusedo nor éist shows ads.
Which is updated more often, sinusedo or éist?
sinusedo ships an update weekly, and éist every 3 days. Most recently, sinusedo was updated on September 28, 2026 and éist on September 26, 2026.

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