There is already a lot written about which app to use for recording a voice memo. That is not this article. This is about what happens after you have the file, the M4A sitting in your iPhone's Voice Memos app, the MP3 your Android recorder spat out, the OGG a Telegram chat handed you, and you need it as text. Different tools handle that job with very different amounts of friction depending on the format and where the file came from.
This list ranks tools by how well they handle the actual file, not by which recording app looks nicest.
Quick picks: best voice memo transcription tools
| Tool | Best for |
|---|---|
| File Transcribe | Any format, guest try, editor built for fixing names and speakers |
| TurboScribe | A big backlog of memos across many months, flat monthly rate |
| Otter.ai | Live dictation as you talk, not files you already recorded |
| Rev | A memo where getting a name or number wrong is expensive |
| Notta | Mobile-first capture with quick AI summaries |
Starting paid (approx.): File Transcribe Pro $19/mo · TurboScribe ~$10/mo · Otter ~$17/mo · Rev AI ~$0.25/min · Notta ~$14/mo. Confirm on each site, these shift.
1. File Transcribe: best for the format you actually have
Voice memo files show up in more formats than people expect: M4A from iPhone Voice Memos, MP3 or M4A from Android recorders depending on manufacturer, OGG from Telegram, sometimes AMR from older phones or messaging apps. File Transcribe accepts all of these directly on upload, no manual conversion step before you can even start.
Why it ranks first for this specific job: you can try it on the homepage with no account, which matters when you just want to know if one weird-format memo will even upload. The segment editor plays the audio while you read and fix the text, useful for memos with a name, address, or number you need to get exactly right. A free account adds SRT/VTT export if the memo is turning into a short video clip with captions.
Format-specific paths: M4A to text for iPhone Voice Memos and most Android recorders, OGG to text for Telegram voice notes specifically.
Where it is not the answer: if you are dictating live and want text appearing as you speak, that is a different product category entirely, see Otter below.
2. TurboScribe: best when the memo backlog is genuinely large
If you have months of voice memos piled up, hundreds of them, across formats, and the job is clearing the backlog rather than carefully editing each one, TurboScribe's flat monthly rate model starts to make more sense than paying per file or fussing over an editor. Upload in batches, get text back, sort it out later.
Tradeoff: requires an account before you see the free tier, and the editing experience is built for export, not for in-app cleanup. Fine when you just need searchable text from a pile of old memos. Less fine when a specific memo needs careful correction. Full comparison of the two approaches: TurboScribe vs File Transcribe.
3. Otter.ai: only useful if you have not recorded the memo yet
Otter's actual strength is live transcription, it listens while you talk and produces text in real time. That is a genuinely different job from transcribing a memo you already recorded in your phone's default app. Otter can import some existing files depending on plan, but it is not built around a folder of M4As from Voice Memos.
Good fit: you open Otter specifically to dictate, and want the transcript to exist the moment you stop talking. Bad fit: the backlog of memos already sitting in your phone's default recorder from the last few months, unless you plan to re-record all of them inside Otter, which nobody actually wants to do.
4. Rev: best for the one memo that actually matters
Most voice memos are low-stakes, a reminder, an idea, a grocery list you said out loud in the car. Occasionally one is not, a recorded verbal agreement, a memo capturing exact figures for a client, a voice note you might need to reference precisely later. For that specific memo, Rev's human transcription tier is worth the per-minute cost in a way it is not for routine notes.
Tradeoff: per-minute pricing adds up fast if you use it for everyday memos instead of the rare high-stakes one. Reserve it for the file where being wrong actually costs something.
5. Notta: best for mobile-first capture with a summary attached
Notta blends recording, transcription, and AI summaries into one mobile app, useful if you want a quick summary of a longer voice memo rather than the full text. If you dictate meeting recaps to yourself and want a bulleted takeaway rather than a wall of text, Notta's summary layer does something File Transcribe and TurboScribe do not prioritize as heavily.
Tradeoff: account required for the free tier, and it is less suited to a backlog of memos recorded in other apps.
The format problem, explained properly
iPhone Voice Memos (M4A). Apple's default format, small files, no built-in transcription in the Voice Memos app itself. Share the file out (AirDrop, Files app, email to yourself) to get it onto whatever tool you transcribe with, then upload as M4A directly, no conversion needed on a tool that supports it natively.
Android recorders (MP3 or M4A). No single default across manufacturers. Check your recorder's share menu or file details if you are unsure which format it saved. Both transcribe fine on a tool that lists them in supported formats.
Telegram voice notes (OGG). Telegram uses OGG with the Opus codec specifically, which trips up tools built mainly around MP3 and WAV. Forward the voice message to Saved Messages, export it with a file manager or Telegram Desktop, then upload the OGG as-is. See transcribe Telegram voice messages for the full export path.
WhatsApp voice notes (OGG or M4A depending on platform). Similar idea, export or forward the audio, then upload. Format varies slightly by device but the workflow is the same.
How to actually choose
Ask two questions before picking a tool for your memo backlog:
- Is this one memo or a hundred? One memo, especially in an unusual format, favors a guest-try upload tool where you can confirm it works before committing to anything. A hundred memos favors a flat-rate volume tool.
- Does a specific detail in this memo need to be exactly right? A name, a number, an address. If yes, budget editing time in a tool with a synced playback editor, or consider human transcription for the rare high-stakes memo.
Format rarely decides the winner by itself, since most modern tools handle M4A, MP3, and OGG without much trouble. What decides it is volume and how much editing the memo actually needs.
What to do with the memo after it is text
A transcribed memo sitting in an export folder is not useful yet. Paste it into whatever notes app you actually check, Notion, Apple Notes, Google Keep, under the right project immediately. If the memo contained an action item, turn it into an actual task, not just a line of text you will scroll past next week. Keep the original audio file if anything in the transcript is ambiguous, a misheard name or number is much faster to fix by re-listening than by guessing.
FAQ
What is the best tool for transcribing iPhone voice memos?
File Transcribe or the M4A to text page, since iPhone's Voice Memos app exports M4A by default and needs no conversion before upload. Guest try works with no signup for a first pass.
Can I transcribe a Telegram voice note directly?
Yes. Telegram voice notes save as OGG. Export the file from the chat, then upload it as-is on a tool that supports OGG natively. Full workflow: OGG to text and Telegram voice messages.
Is TurboScribe or File Transcribe better for a big memo backlog?
Depends on whether you also need to edit each one. TurboScribe's flat rate suits pure volume. File Transcribe suits volume plus in-app editing and subtitle export. See TurboScribe vs File Transcribe.
Does format (M4A vs MP3 vs OGG) affect transcription accuracy?
Not much, as long as the tool supports the format directly. Recording conditions, background noise, mic distance, matter far more than the container format.
What about apps built specifically for voice memos, not general transcription tools?
That is a different comparison, focused on which recording and transcription app to use in the first place. See best voice memo to text apps for that device-by-device breakdown.
Try it on your actual backlog
Upload one real memo, whichever format it happens to be, on the homepage. No signup needed to see if the draft is usable before you decide how to handle the rest of the pile.
More guides
- Transcription guides
- Try File Transcribe free
- Transcript format guide
- Best transcription software
- Transcribe Zoom meetings