Comparison

KaraLog vs 4trMTR

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

Head to head
About

KaraLog

Features
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Karalog is an app that lets you record your karaoke scores and manage your singing history. Search for songs directly from Apple Music and easily add the songs you've sung. No more tedious manual entry of song titles or artist names — logging your karaoke sessions has never been smoother. Save the songs you sang, your scores, dates, machine types, and more, so you can easily look back on past records and personal bests. "What score did I get on this song last time?" "I want to see the songs where I've beaten my personal best." "I want to track my scores for songs I'm practicing." Karalog keeps your karaoke records organized and easy to navigate, exactly when you need it. Perfect for solo karaoke, singing with friends, or tracking your vocal practice progress. Let Karalog make recording your growth as a singer both fun and effortless. ※ An Apple Music subscription is required to use the song search and add features in this app.

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
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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。

Screenshots

KaraLog4 screens
4trMTR3 screens

Verdict

The call

The clearest difference is price: KaraLog at Free against 4trMTR's $0.99. KaraLog also leads on update cadence (every 9 days vs every 3 weeks). 4trMTR's advantage is in-app purchases (none vs 1) and iOS requirement (17.6 vs 26.5). 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

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

UpkeepUpdate frequency

KaraLog ships an update every 9 days, 4trMTR every 3 weeks. The most recent releases landed on October 4, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 4 level
KaraLog versus 4trMTR: the parameters behind the verdict, then further details
ParameterKaraLog4trMTR
PriceFree — better$0.99
Positive reviews—100.0% of reviews
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.517.6 — better
Further details — not scored
Size8 MB12 MB
Age rating4+4+
DeveloperYuta NishimatsuYUKIO TOKIWA

In-app purchases

1 purchases

KaraLog

One-time1
  • KaraLog Pro$2.99
None

4trMTR

No in-app purchases

Questions

Is KaraLog free?
KaraLog is free to download, with in-app purchases available.
Is 4trMTR free?
4trMTR costs $0.99, with no in-app purchases.
Do KaraLog or 4trMTR have ads?
Neither KaraLog nor 4trMTR shows ads.
Which is updated more often, KaraLog or 4trMTR?
KaraLog ships an update every 9 days, and 4trMTR every 3 weeks. Most recently, KaraLog was updated on October 4, 2026 and 4trMTR on October 25, 2026.

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