MasterTone vs ProPlayer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MasterTone
This offline audio mastering app offers simple controls for refining sound sources. It analyzes input audio to achieve practical volume and balance without complex settings, focusing on a single intensity knob for adjustments. Supports WAV and AAC exports for music production and remastering.
- Offline 2-pass processing
- Safe/Loud modes
- Single Intensity control
- Peak control with soft saturation
- WAV/AAC export
- Complete offline operation
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MasterTone は、 シンプルな操作で音源を仕上げるための オフライン・マスタリング/リマスタリングアプリです。 複雑な設定や視覚的な演出はありません。 必要なのは モード選択と Intensity ノブだけ。 2-pass オフライン処理により、 入力音源を解析し、過度な歪みを避けながら 実用的な音量とバランスに整えます。 主な特長 • 2-pass / offline processing 音源を解析後に書き出す、安定したオフライン処理 • Safe / Loud モード 配信向けのクリーンな仕上がり、または音圧を重視した仕上がり • Single Intensity control 音の方向性を一つのノブで調整 • Peak control with soft saturation クリッピングを抑え、耳障りなピークを穏やかに処理 • WAV / AAC 書き出し対応 • 完全オフライン動作 音源は端末内で処理され、外部に送信されません こんな用途に • 同人音楽・自主制作音源の最終仕上げ • 既存音源の軽いリマスタリング • 配信・提出用の音量調整 • iPad / iPhone 完結の制作環境 ※ 表示される Loudness / Peak 値は参考値(approx)です。 ※ 本アプリは専門的なマスタリング作業を置き換えるものではありません。
ProPlayer
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ProPlayer is an audio player for listening deeply to your own music library in the best possible sound. It isn't about streaming — it's built for importing and playing the audio files you already own. From MP3 to lossless and hi-res sources like FLAC, WAV, and ALAC, it takes in any format. And it goes beyond just listening, with serious tools to *see* the sound, shape it, and export it. ■ Import and play any source, as-is - Supports MP3 / AAC / M4A(ALAC) / AIFF / WAV / FLAC - Easy import from the Files app, AirDrop, or transfer from a computer - Reads artwork and track info automatically ■ 8-band parametric EQ - Full control from 20 Hz to 20 kHz — fine-tune frequency, gain, and bandwidth (Q) - A pro-grade setup with low-shelf / high-shelf plus parametric bands ■ A visualizer that lets you *see* the sound - Real-time FFT spectrum (logarithmic frequency display) - Whole-track waveform to spot choruses and silences at a glance ■ Professional loudness metering - LUFS values based on EBU R128 / ITU-R BS.1770 - Both the track average (Integrated) and the live value during playback (Momentary) ■ Deeper playback features - Vocal extraction / instrumental extraction - Change speed from 0.25× to 2.0× while preserving pitch - Repeat, queue, playlists, background playback, and a mini player ■ Process and export - Export audio with your adjustments (EQ and more) applied, choosing format, sample rate, and bit depth - Share or save it right away A single app for music lovers, creators, and audio enthusiasts. Enjoy your own music library more deeply than ever.
Screenshots
Verdict
MasterTone and ProPlayer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | MasterTone | ProPlayer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.2 | 26.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | TAKASHI NOSE | waraku kobayashi |
In-app purchases
MasterTone
No in-app purchases
ProPlayer
No in-app purchases









