Notetracks is a review tool built around the waveform: you upload WAV, MP3, MP4 or MOV files and reviewers leave comments pinned to the exact second, with stems and takes playing back in sync and notes that export as markers to Pro Tools, Audition, Audacity, Hindenburg, REAPER or Premiere. Dropbox Replay also reviews audio, but it is a general media review tool inside Dropbox, built around video, images and PDFs.
If you send mixes, episodes or chapters for feedback, Notetracks keeps every version, every note and every reviewer in one project, with one link.

Notes on a single moment or a whole range of the waveform, with replies in threads
Dropbox Replay is a review and approval tool built into Dropbox. It handles video, images, PDFs and audio, with frame-accurate comments, markup on the picture and version comparison. It connects to Premiere Pro, After Effects, Final Cut Pro, DaVinci Resolve and Pro Tools. If your files already live in Dropbox and most of your reviews are video, it's a convenient choice.
Notetracks is built for teams whose work you have to hear: podcasts, music, audiobooks, voice-over and sound design. Every note sits on the waveform at the moment it's about, stems and takes play back together, and each new mix goes into the same project with its notes. When the review is done, the notes go back into your editor as markers. Video files go into the same projects, so a client can watch a cut and comment on the sound in one place.
Both tools let a reviewer open a link and leave timestamped notes. The difference is what the review is built around.
Dropbox Replay details come from Dropbox's Replay page and help center, checked October 2026.
Replay makes sense when Dropbox is already the center of your work. Choose it if:
Notetracks is the better fit when the sound is the deliverable:
Reviewers listen in the browser and leave notes like "the vocal gets buried here" or "re-read this line" at the exact second. You export the notes and import them into your editor, and each one becomes a marker or a label at its time, with who left it. Fix the pickups, upload the new version to the same project, and the reviewer hears what changed.

Client notes from Notetracks imported into Pro Tools: each one is a marker on the ruler, listed in Memory Locations

The same notes in Audacity: each comment becomes a label at its exact time
Yes. Replay accepts WAV, MP3, AIFF, FLAC and other audio formats, and the Replay Add-On adds lossless playback up to 24-bit/96 kHz. The difference is the tools around the file: Notetracks shows the waveform, plays several tracks in sync and exports notes as markers to more audio editors.
Yes. You can import audio into a Notetracks project straight from Dropbox or Google Drive, so your masters stay where they are.
Upload each new version into the same project. The notes for every version stay in one place, instead of a new link every round.
Not in either tool. In Notetracks, reviewers open the share link and comment, and they never pay.
Every plan starts with a 7-day free trial, and plans start at $9 a month. See pricing for what each plan includes.
Reviewing video as well as audio? See how Notetracks compares with Frame.io.
Try it on your next review
Upload a mix, an episode or a chapter, send one link, and see the notes land on the waveform.
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