Comparison

4trMTR vs わおん

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

Head to head
About

4trMTR

Record and layer multiple musical performances one track at a time to create a complete song. Easily manage your projects by saving, loading, and creating new ones through a simple tap interface.

Highlights
  • Four-track recording
  • Layered performances
  • Project saving
  • Project loading
  • New project creation
Features
Read full description

iPhoneを、シンプルな4トラックMTRに。 4trMTRは、ギター、ベース、ボーカルなどを1トラックずつ重ねて録音できる、シンプルなマルチトラックレコーダーです。 曲のアイデアを思いついたとき。 バンドのデモを作りたいとき。 楽器や歌を重ねて録音したいとき。 複雑なDAWを立ち上げなくても、iPhoneですぐに録音を始められます。 【シンプルな4トラック録音】 4つのトラックを使って、演奏や歌を重ねて録音できます。 例えば、 Track 1:ギター Track 2:ボーカル Track 3:ベース Track 4:コーラス といった使い方ができます。 【パンチイン録音】 録り直したい部分だけを指定して再録音できます。 演奏の一部分を修正したいときにも、最初からすべて録り直す必要はありません。 【入力を選んで録音】 利用可能な入力から、録音に使用する入力を選択できます。 iPhoneだけで手軽に録音したり、対応する外部オーディオ機器を使った録音にも活用できます。 【プロジェクトとして保存】 録音した内容はプロジェクトとして管理できます。 曲のアイデアやデモを残し、あとから続きを録音できます。 【シンプルだから、すぐ録れる】 初めてのレコーディングはカセットでした。 大した機能はなかったけれど、何でも作れる気がしました。 4trMTRは、そんなシンプルな録音の楽しさをiPhoneで再現するためのアプリです。 たくさんの機能を覚えるより、まず録音する。 楽器を持って、RECを押して、音を重ねる。 4trMTRで、あなたの曲のアイデアを残してみてください。

About

わおん

Features
Read full description

See the notes inside your recordings with わおん (WaoN), a visual music transcription workspace for iPhone, iPad, and Mac. Open an audio file or record directly, then explore its waveform, spectrogram, and detected notes together on one synchronized timeline. ANALYZE AND EXPLORE • View the waveform, spectrogram, and detected notes together • Seek and zoom through the recording • Adjust playback speed and pitch without changing the source audio • Set a loop to study difficult passages repeatedly • Switch between spectrum, overlay, and notes displays EDIT DETECTED NOTES • Select and audition individual notes • Move notes in time or pitch • Add or delete notes • Fine-tune pitch, start time, end time, and velocity • Undo and redo your edits EXPORT YOUR WORK • Export detected and edited notes as MIDI or MusicXML • Automatically estimate key and tempo before export • Adjust key and tempo manually when needed • Save exported files or share them with compatible music apps TRY IT FREE The free version lets you analyze, edit, and export the first 30 seconds of a recording. A one-time Full Unlock enables complete recordings across iPhone, iPad, and Mac through Universal Purchase. No subscription is required. PRIVATE BY DESIGN Audio analysis takes place on your device. No account or sign-in is required, and your recordings are not uploaded for analysis. わおん is designed for musicians, students, teachers, arrangers, and anyone who wants a visual and editable starting point for music transcription.

Screenshots

4trMTR3 screens
わおん4 screens

Verdict

The call

The clearest difference is price: わおん at Free against 4trMTR's $0.99. わおん also leads on update cadence (every 6 days vs every 3 weeks). 4trMTR's advantage is in-app purchases (none vs 1). On ads, 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

わおん is free to download; 4trMTR costs $0.99 up front. わおん sells 1 one-off in-app purchase. 4trMTR asks for nothing beyond the download.

UpkeepUpdate frequency

4trMTR ships an update every 3 weeks, わおん every 6 days. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 5 level
4trMTR versus わおん: the parameters behind the verdict, then further details
Parameter4trMTRわおん
Price$0.99Free — better
Positive reviews100.0% of reviews—
Update frequencyEvery 3 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.616.0 — better
Further details — not scored
Size12 MB4 MB
Age rating4+4+
DeveloperYUKIO TOKIWAKengo Ichiki

In-app purchases

None

4trMTR

No in-app purchases

1 purchases

わおん

One-time1
  • わおん Full Unlock$34.99

Questions

Is 4trMTR free?
4trMTR costs $0.99, with no in-app purchases.
Is わおん free?
わおん is free to download, with in-app purchases available.
Do 4trMTR or わおん have ads?
Neither 4trMTR nor わおん shows ads.
Which is updated more often, 4trMTR or わおん?
4trMTR ships an update every 3 weeks, and わおん every 6 days. Most recently, 4trMTR was updated on October 25, 2026 and わおん on October 21, 2026.

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