Vocal Remover · Stem Splitter vs CalcKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vocal Remover · Stem Splitter
This application uses AI to separate songs into four distinct audio stems: vocals, drums, bass, and other instruments. You can adjust the volume of each stem and export them individually or as a custom mix. It processes audio directly on your device without requiring an internet connection.
- AI-powered stem separation
- 4-stem output (vocals, drums, bass, other)
- On-device processing
- Real-time stem mixing
- Export individual stems or custom mixes
- Organized song library
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Vocal Remover splits any song into 4 separate stems — Vocals, Drums, Bass, and Other — right on your device using the Demucs AI model. No internet required, no subscriptions, completely free. How It Works: 1. Import a song from Files, Music Library, or paste a URL 2. The AI separates it into 4 stems in seconds 3. Adjust volume of each stem independently 4. Export any stem or your custom mix Key Features: • AI-Powered Separation — Demucs v4 neural network delivers studio-quality stem isolation • 4-Stem Output — Vocals, Drums, Bass, and Other (guitar, synths, keys, etc.) • On-Device Processing — your music never leaves your phone • Real-Time Mixing — adjust the volume of each stem with instant playback • Export & Share — save individual stems or a custom mix as WAV • Song Library — all your separated tracks organized in one place Perfect for: - Creating karaoke tracks by removing vocals - Isolating drum patterns for practice - Extracting bass lines to learn songs - Making instrumental versions of any song - DJs preparing acapellas and backing tracks - Musicians studying individual parts Import from anywhere — Files app, Apple Music library, or a direct link. The app converts any audio format to high-quality WAV for the best separation results. Completely free. No ads. No paywalls. No account required. Terms of Use: https://o2app.store/terms Privacy Policy: https://o2app.store/privacy
CalcKit
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計算にまつわる「あったら便利」を、ひとつに。 CalcKitは、日常から学習まで幅広く使える多機能計算アプリです。 ■ 電卓 四則演算に加え、括弧を使った計算にも対応。 計算式と結果は履歴に保存され、あとから見返せます。 ■ 割り勘計算 合計金額と人数を入力するだけ。 「1人だけ多めに払う」といった調整にも対応し、残額を自動で再計算します。 ■ 日数計算 2つの日付を選ぶだけで日数を計算。 土日を除いた営業日ベースの計算にも対応しています。 ■ 目標計算 目標金額や回数、期間を入力すると、1日・1週間・1か月ごとの必要ペースを自動計算。 貯金や学習の計画づくりに役立ちます。 ■ 数学ツール ルート(平方根)計算ができます。 ■ 履歴管理 保存した計算結果をいつでも確認。不要な履歴は簡単に削除できます。 シンプルで使いやすく、広告表示はありません。
Screenshots
Verdict
The clearest difference is in-app purchases: CalcKit at none against Vocal Remover · Stem Splitter's 2. On price, update cadence, 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
Both are free to download. Vocal Remover · Stem Splitter sells 2 in-app purchases, starting at $3.99 per 7 days. CalcKit asks for nothing beyond the download.
Vocal Remover · Stem Splitter ships an update every 10 days, CalcKit every 2 weeks. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.
| Parameter | Vocal Remover · Stem Splitter | CalcKit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 10 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 137 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleh Lohinov | Kazumi Matsumoto |
In-app purchases
Vocal Remover · Stem Splitter
- Pro Weekly3 Days trial$3.997 Days
- Pro Yearly$34.991 Year
CalcKit
No in-app purchases
Questions
Is Vocal Remover · Stem Splitter free?
Is CalcKit free?
Do Vocal Remover · Stem Splitter or CalcKit have ads?
Which is updated more often, Vocal Remover · Stem Splitter or CalcKit?
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