Comparison

S vs Aureline

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

Head to head
About

S

This app is a polyphonic synthesizer that works with specific hardware. It offers a variety of sound engines, filters, and effects for creating unique audio textures. Advanced modulation options and a flexible routing system allow for deep sound design.

Highlights
  • Dual engine slots per voice
  • Multiple sound flavors (analog, wavetable, FM, speech)
  • Classic and Modern filter modes
  • Advanced FX rack
  • Two free-routing LFOs
  • Unified mod matrix
  • Standalone, AU, and AUv3 formats
Features
Read full description

s-2 is a polyphonic synthesizer designed to work with the Roland AIRA Compact S-1. ENGINE Each voice runs two parallel engine slots that mix together. Pick a sound flavor per slot, including: • Classic analog — saw, square, sub, noise, pulse-width • Wavetable • FM • Speech • Chord • Plucked string FILTER AND FX Classic mode runs a vintage-style ladder filter into a simple Delay → Chorus → Reverb chain. Modern mode swaps in a multi-mode SVF (LP / BP / HP) followed by a 3-slot Advanced FX rack with Bitcrusher, Drive, Flanger, Phaser, Auto-Filter, Tape Delay, Plate Reverb and Chorus. MODULATION Two free-routing LFOs (sine / triangle / saw / square / random / noise, with optional clock-sync), a dedicated filter envelope with two destination slots, and a unified mod matrix dialog that visualizes every routing in one place. Click any knob in Learn mode to assign — no digging through menus. FORMATS • Standalone for iOS • Audio Unit (AU) for Logic Pro and other AU hosts • AUv3 plugin for iPad / iPhone in AUM, GarageBand, Cubasis and more - s-2 is an independent third-party application. It is not affiliated with, sponsored by, or endorsed by Roland Corporation. "Roland", "AIRA", "AIRA Compact", and "S-1" are trademarks of Roland Corporation, used here only to describe MIDI compatibility between this app and that hardware.

About

Aureline

This app is an 8-voice polyphonic synthesizer that combines the feel of classic analog synths with the unique character of waveform memory sound sources. It offers a wide range of sound creation capabilities, from warm pads and powerful basses to digital game sounds and sound effects.

Highlights
  • 8-voice polyphony
  • Dual oscillator configuration
  • Analog modeling and waveform memory
  • WAVE EDIT for drawing waveforms
  • POLY MOD
  • Filter/Amp Envelope
  • LFO, Arpeggiator, Chord, Hold
Features
Read full description

Aurelineは、クラシックなアナログシンセの操作感と波形メモリ音源の個性を組み合わせた、8ボイス・ポリフォニックシンセサイザーです。 2基のオシレーター、フィルター、エンベロープ、LFO、POLY MOD、アルペジエーターを備え、温かいパッドや力強いベースから、デジタルなゲームサウンド、効果音まで幅広く作れます。 主な機能 ・8ボイス・ポリフォニー ・2オシレーター構成 ・アナログモデリング波形と波形メモリ ・波形を指で描けるWAVE EDIT ・POLY MOD ・フィルター/アンプ・エンベロープ ・LFO、アルペジエーター、コード、ホールド ・50音色ライブラリ ・音色ファイルとライブラリの保存/読み込み ・外部MIDI入力 ・AUv3 Instrument対応 スタンドアロンアプリとして本体の鍵盤から演奏できるほか、GarageBandなどの対応ホストではAUv3 Instrumentとして使用できます。

Screenshots

S3 screens
Aureline4 screens

Verdict

The call

The clearest difference is update cadence: Aureline at daily against S's every 6 weeks. Aureline also leads on rating (4.7 vs 4.5). On price, ratings volume, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Aureline holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 4 and 7 respectively.

UpkeepUpdate frequency

S ships an update every 6 weeks, Aureline daily. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
S versus Aureline: the parameters behind the verdict, then further details
ParameterSAureline
PriceFreeFree
Rating4.5 (4 ratings)4.7 (7 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings47 — better
Update frequencyEvery 6 weeksDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS16.016.0
Further details — not scored
Size17 MB4 MB
Age rating4+4+
DeveloperMathias KirkerødHideki Konishi

In-app purchases

None

S

No in-app purchases

None

Aureline

No in-app purchases

Questions

Is S free?
S is free to download, with no in-app purchases.
Is Aureline free?
Aureline is free to download, with no in-app purchases.
Which has better reviews, S or Aureline?
Aureline is rated higher. S averages 4.5 out of 5 from 4 ratings, while Aureline averages 4.7 from 7 ratings.
Do S or Aureline have ads?
Neither S nor Aureline shows ads.
Which is updated more often, S or Aureline?
S ships an update every 6 weeks, and Aureline daily. Most recently, S was updated on October 31, 2026 and Aureline on October 31, 2026.

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