MusicMath vs DDP Player
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MusicMath
This musical tool offers a comprehensive suite of calculators for audio professionals and musicians. It includes converters for timecode, tempo, note frequencies, and sample lengths, alongside a tap tempo metronome and detailed note-to-frequency tables with customizable temperaments.
- Timecode calculator with frame format management
- Tap tempo with metronome
- Tempo to delay (milliseconds/hertz) converter
- Note to frequency converter with temperaments
- Sample length converter
- Frequency to note converter
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"MusicMath" is a musical tool that includes a timecode calculator, a tap tempo, a tempo to delay in milliseconds and hertz converter, a note to frequency table converter, a sample length converter, a tempo change converter, and a frequency to note converter. Timecode calculator: • Add and subtract timecodes or frames • Convert a number of frames to timecodes • Simultaneously convert the number of frames and the timecode • Conversion of timecode when changing the frame format • Managing frame formats 23.976 fps, 24 fps, 25 fps, 29.94 fps, 29.97 fps, 29.97 fps drop frame, 30 fps, 50 fps, 59.94 fps, 60 fps • Real-time display for formats 23.976 fps, 29.94 fps, 29.97 fps, 59.94 fps • Unlimited history calculations • History can be saved and exported to other applications Tap tempo: • Improved algorithm for impresize tap • Metronome • Transfer calculated tempo to other MusicMath tools Tempo to delay table: • Convert tempo to milliseconds and hertz • Convert for whole-note, half-note, quarter-note, eighth-note, sixteenth-note, thirty-note, and sixty-fourth-note for dotted notes and triplets Note to frequency table: • Convert MIDI notes to frequencies • Adjustable diapason and root note • One hundred selectable temperaments • Visualization of intervals in cents for each temperament • Taking into account the temperament for the calculation of frequencies • Plays piano sound when notes are touched Sample length converter: • Convert length between samples, milliseconds, and tempo Tempo change converter: • Calculates tempo change by ratio (%) and transposition Frequency to note converter: • Convert a frequency to the closest note and the cents needed • Plays the frequency
DDP Player
Listen to DDP images on your Apple device. This app allows artists and producers to review masters, checking CD text, ISRC codes, and track spacing. It supports loading DDPs from cloud storage, clipboard links, or iTunes.
- Reads DDP images
- Supports industry-standard DDP protocol
- Loads DDPs from Dropbox, clipboard, or iTunes
- Displays CD text and ISRC codes
- Shows track numbering and spacing
- Requires desktop or OEM serial number/key
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The Sonoris DDP Player is an app that reads DDP images to listen to on your Apple device. The industry standard DDP protocol is supported by all major CD and even vinyl pressing plants, and ensures an error free transfer and manufacture of your master. Whether you are an artist that wants to listen to the final DDP master of your new album or you are a studio owner or producer and want a efficient and quick way to have your masters approved, this app is for you. It can load DDPs directly from a Dropbox account, a download link in the clipboard memory or through the iTunes app. Once downloaded you can open the DDP and see any CD text and ISRC codes, track numbering and spacing, exactly as the mastering engineer has meant it. To use it you need one of these: • a serialnumber for the desktop version of the Sonoris DDP Player or DDP Creator. • a key for the (branded) Sonoris DDP Player OEM. Ask your mastering studio.
Screenshots
Verdict
The clearest difference is price: DDP Player at Free against MusicMath's $9.99. DDP Player also leads on update cadence (every 3 months vs every 7 months) and iOS requirement (9.0 vs 13.0). MusicMath's advantage is rating (4.3 vs 3.0) and review sentiment (73% vs 50%). On ads, in-app purchases 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
DDP Player is free to download; MusicMath costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MusicMath holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: MusicMath has 12 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 73% of MusicMath's written reviews are positive against 50% of DDP Player's.
MusicMath ships an update every 7 months, DDP Player every 3 months. The most recent releases landed on September 28, 2026 and June 11, 2026 respectively.
| Parameter | MusicMath | DDP Player |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.3 (12 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 73.3% of reviews — better | 50.0% of reviews |
| Number of ratings | 12 — better | 2 |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Laurent Colson | Pieter Stenekes |
Customer experience
MusicMath
DDP Player
In-app purchases
MusicMath
No in-app purchases
DDP Player
No in-app purchases









