Fireflies & Otter vs a Private Recorder for 'Who Said What'

Fireflies and Otter are the two names most people reach for when they want a meeting transcript that shows who said what. Both do it well — and both do it the same way: by sending a bot into your call and uploading your audio to the cloud. If that model doesn't fit your meetings, there's a different category worth knowing: a private, on-device recorder that labels speakers with no bot and no upload. This guide compares the approaches honestly.

How Fireflies and Otter work

Both are cloud AI notetakers. The pattern is the same:

1. A bot joins your meeting as a participant (OtterPilot, Fireflies Notetaker).
2. It streams your audio to the cloud, where it's transcribed and diarized — speaker labels applied, often in real time.
3. You get a labeled transcript, summary, and action items in a web dashboard, with team sharing and integrations.

For online team meetings where privacy isn't a concern, this is smooth and genuinely useful. Fireflies leans toward integrations and searchable team history; Otter toward polished real-time capture. Both are solid at speaker diarization in small, clean meetings, and both slip somewhat in large, noisy ones.

The two catches

The shared approach carries two costs:

• A bot in your call. Everyone sees a notetaker join. For a sensitive 1:1, a candidate interview, a legal or HR conversation, that's intrusive — and sometimes unwelcome enough to derail the meeting.
• Your audio is uploaded. The recording leaves your device and lives on the vendor's servers. For confidential meetings, that alone rules it out.

There's also a coverage gap: bots only work for online calls. Half your important conversations — across a desk, on a site visit, over coffee — a bot can't touch.

The alternative: a private on-device recorder

Instead of a bot that joins and uploads, you can record the meeting from your phone and label speakers on-device afterward. BlackBox is built this way:

• Record the meeting with an always-on recorder — for online calls, put the call on speaker; nothing joins the call (see recording Zoom, Teams, or Meet).
• Transcribe on-device (on-device transcription) — no upload.
• Label speakers on-device — rename anonymous labels to attendees; get named minutes.
• In-person too — the same habit covers desk meetings and interviews.
• iPhone and Android, free, no account, offline, behind Face ID.

Side by side

The honest trade: Fireflies and Otter give you real-time cloud collaboration, team sharing, and deep integrations. A private recorder gives you no bot, no upload, in-person coverage, and speaker labels computed on your own phone. Different tools for different priorities.

Which should you choose?

• Routine online team meetings, privacy not a concern, you want a shared dashboard → Fireflies or Otter.
• Sensitive meetings, interviews, or anything you can't upload → a private on-device recorder.
• You want no bot appearing in your calls → on-device recorder.
• You need in-person meetings covered too → on-device recorder; bots can't do this.
• You want the deeper Otter-specific breakdown → Otter speaker identification and a private alternative; for the whole field, best speaker diarization apps.

Fireflies and Otter, each briefly

The two aren't identical, so a quick orientation:

• Otter leans toward polished real-time capture and individual use, with strong live transcription and a refined mobile experience. Its speaker labels appear live but slip in large meetings.
• Fireflies leans toward teams and integrations — a searchable conversation history, CRM and workflow hooks, and a free tier with generous transcription minutes but limited AI features.

Both are cloud tools that send a bot into online calls and process your audio on their servers. Choosing between them is a question of team features vs individual polish — but they share the same two catches (a visible bot, and uploaded audio) and the same blind spot (no in-person coverage). If either of those is a dealbreaker for you, the decision isn't "Fireflies or Otter" — it's "cloud bot or private recorder."

The in-person blind spot

This deserves emphasis because it's easy to miss. Bot-based notetakers are built entirely around online meetings — they join a Zoom, Teams, or Meet call. But a large share of important conversations happen with no video call at all: a chat across a desk, a hallway decision, a client lunch, a site walkthrough, a one-on-one. Fireflies and Otter simply can't capture those; there's no call for a bot to join.

A phone recorder covers them with the same habit you use for online meetings — you're not maintaining two systems. That single-tool coverage of both online and in-person is a practical advantage that's easy to undervalue until you realize how many of your key conversations were never on a call in the first place.

Migrating without disruption

Switching from a bot tool to a private recorder is low-friction:

1. Stop inviting the bot. Start your phone recorder before the meeting instead — nothing joins the call.
2. Record online calls on speaker so the mic captures everyone (recording Zoom, Teams, Meet); record in-person meetings with the phone on the table.
3. Transcribe, label, and rename speakers on-device.
4. Summarize the labeled transcript into named minutes with an AI.

You give up the real-time team dashboard; you gain privacy, no bot, and in-person coverage. For teams that don't live in the dashboard, it's a clean trade.

Quick decision guide

To settle it fast, answer three questions:

• Can you upload this meeting's audio? If often no → private recorder.
• Are your important conversations only online, or also in person? If also in person → private recorder (bots can't cover those).
• Does your team live in a shared notes dashboard with integrations? If yes → Fireflies or Otter may earn the cloud trade.

Two "private recorder" answers out of three is a strong signal to skip the bots. The tools overlap on the headline feature — speaker-labeled transcripts — so the decision really turns on privacy, coverage, and whether you need the collaboration layer, not on who labels speakers slightly better.

Accuracy note

All three depend on clean audio for good labels. Keep the mic central, the room quiet, and discourage crosstalk — reduce background noise. Large meetings need a review pass to rename and correct labels regardless of tool. Fireflies, Otter, and an on-device recorder all improve the same way: better capture, fewer overlapping voices.

The bot problem, considered fairly

It's worth being even-handed about bots. For a large public team meeting, a notetaker bot is transparent and even helpful — everyone knows it's there, and that's the point. The problem is narrower but real: in sensitive or one-on-one settings, a visible "X is recording" participant changes the dynamic. Candidates clam up; a client feels surveilled; a delicate conversation gets stiffer. And in some contexts the bot's presence forces a disclosure conversation you'd rather handle yourself, on your own terms.

A phone recorder doesn't eliminate your responsibility to be transparent about recording — you should still tell people when appropriate (see is it legal to record audio) — but it lets you control that conversation rather than a bot announcing it for you. For sensitive meetings, that control matters.

What you keep and what you trade

Being clear about the trade prevents disappointment:

You keep: speaker-labeled transcripts, summaries, and action items — the core "who said what" value that made you consider Fireflies or Otter in the first place.

You give up: real-time cloud collaboration, a shared team dashboard, and deep app integrations. If your team genuinely lives in those, a cloud tool may be worth the upload.

You gain: privacy (nothing uploaded), no bot in your calls, coverage of in-person conversations, offline operation, and no per-seat or per-minute billing.

For an individual or a small team that mainly wants reliable, private minutes — not a collaboration platform — that trade usually favors the on-device recorder. For a large org built around a shared notes workflow, the cloud tools keep their edge. Knowing which you are makes the decision easy.

The bottom line

Fireflies and Otter both deliver "who said what," but they get there by sending a bot into your meeting and uploading your audio to the cloud — and neither covers in-person conversations. If you want speaker labels without a bot in your call and without your recordings leaving your device, a private on-device recorder is the better category. BlackBox records, transcribes, and labels speakers on your phone — no bot, no upload, free on iOS and Android.