Hearlog vs Otter.ai: Best Free AI Transcription Comparison 2025

Let me get this out of the way upfront: I helped build Hearlog. So you might think this is going to be a hit piece on Otter.ai. It's not. Otter is a solid product that does some things genuinely better than us. But if you're trying to figure out which tool actually fits your workflow, you deserve an honest breakdown—not marketing fluff.

Here's the thing about transcription tools: there's no "best" option. There's only the best option for you. And that depends on what you're actually trying to do. So let me walk you through where each tool shines, where it falls short, and help you figure out which one makes sense for your situation.

The Quick Verdict (TL;DR)

Bottom line: If you need auto-join for Zoom meetings and speaker labels, Otter's your tool. If you need translation, multiple summary styles, or work with non-English audio (especially Indian languages), Hearlog is probably the better fit.

Pricing: What You Actually Get for Free

Let's talk money—or rather, how to avoid spending it. Both tools have free tiers, but they work differently.

Otter.ai Free Tier

• 300 minutes of transcription per month
• Limited to 30-minute recordings
• Basic features only
• No translation (that's a paid feature on higher tiers—if available at all)

Hearlog Free Tier

• Daily credit system (refreshes every day)
• Full translation included—no extra charge
• All 4 summary styles available
• No artificial recording length limits

Here's my honest take: Otter's 300-minute monthly limit sounds generous until you have a busy week of meetings. That's maybe 5-6 hour-long calls, and you're done for the month. Hearlog's daily refresh model means you can pace yourself better without worrying about running out mid-month.

Where Otter.ai Genuinely Wins

Look, I'm not going to pretend Otter isn't good. It is. Here's where it beats us, fair and square:

1. Automatic Meeting Integration

Otter's killer feature is the meeting bot. You schedule a Zoom, Google Meet, or Microsoft Teams call, and Otter's bot just... shows up. Joins the meeting, records everything, transcribes it, and has your notes ready when you're done. You don't have to remember to hit record. You don't have to think about it at all.

That's genuinely convenient. I've been in meetings where I forgot to start recording until 10 minutes in, and that context is just... gone. Otter solves that problem completely.

2. Speaker Diarization

Otter identifies who said what. In a meeting with 5 people, you'll see "Sarah:" and "Mike:" labels next to each chunk of dialogue. That's incredibly useful for meeting notes where you need to track action items by person.

Hearlog doesn't do this yet. We're working on it, but right now, our transcriptions come as one continuous stream without speaker labels.

3. Calendar Integration

Connect your Google or Outlook calendar, and Otter knows about your meetings before they happen. It can even join automatically based on your calendar events. If you live in your calendar (and let's be honest, most knowledge workers do), this is a significant workflow improvement.

4. Mobile App Polish

Otter's been around longer and has a more mature mobile experience. The app is slick, well-designed, and handles edge cases gracefully. Hearlog's mobile experience is still web-based, which works but isn't as polished as a native app.

Where Hearlog Actually Wins

Okay, now let me tell you where we think we've built something better. I'm obviously biased here, but these are the features that users consistently tell us made them switch from Otter.

1. Free Translation (50+ Languages)

This is probably our biggest differentiator. Record something in Spanish, get a full English transcription AND translation. Interview someone in Hindi, translate to English for your report. This is completely free on Hearlog.

Otter? Translation isn't really their thing. If you need to work across languages, you're looking at third-party tools or manual work.

I've talked to journalists who interview sources in multiple languages, researchers working with international participants, and business folks dealing with global teams. For them, the translation alone makes Hearlog the obvious choice.

2. Indian Language Support (14 Languages)

Hindi, Tamil, Telugu, Bengali, Marathi, Gujarati, Kannada, Malayalam, Punjabi, Odia, Urdu, Assamese, Nepali, Sanskrit—we support all of them. This isn't just "technically supported." We've actually tested and tuned our system for these languages because a huge portion of our users are in India.

Try transcribing a Tamil lecture on Otter. Let me know how that goes.

3. Four Summary Styles

Different situations call for different kinds of notes:

• Detailed: Everything that was said, organized neatly
• Concise: Just the essentials, no fluff
• Key Points: Bullet-point highlights for quick scanning
• Meeting Notes: Formatted like professional meeting minutes with action items

Otter gives you one style. Hearlog lets you pick what fits your situation. A student reviewing a lecture wants different output than a project manager summarizing a stakeholder call. We get that.

4. Flexibility with Audio Sources

Here's something important that a lot of people miss when comparing these tools:

Hearlog can record live meetings directly—you just hit record while in your Zoom, Meet, or Teams call. No bot joining your meeting, no "Otter.ai is recording" notification popping up. You're in control.

You can also upload existing recordings—have a Zoom recording from last week? A voice memo from your phone? An interview you recorded months ago? Just upload it. Hearlog will transcribe it, translate it if needed, and give you summaries in any of the four styles.

This flexibility is huge. Otter's bot approach is convenient for future meetings, but what about all that audio you already have? What about meetings on platforms Otter doesn't integrate with? What about in-person recordings?

5. No Bot Awkwardness

Let's be real—having a bot join your meeting can be weird. "Otter.ai has joined the meeting" pops up, and suddenly everyone's aware they're being recorded. In sensitive conversations, that changes the dynamic.

With Hearlog, you can record discreetly on your end (assuming you have consent, obviously—don't be creepy about it). The other participants don't see a bot. The conversation stays natural.

What About Zoom Meetings?

This comes up a lot, so let me address it directly.

The Otter Approach

Otter's Zoom integration is seamless: connect your calendar, and their bot automatically joins your scheduled meetings. Transcription happens in real-time, and you get your notes as soon as the meeting ends. It's the "set it and forget it" approach.

The downside? Everyone in the meeting knows a bot is recording. You're locked into their ecosystem. And if you want translation or different summary styles, you're out of luck.

The Hearlog Approach

With Hearlog, you have two options:

1. Record live: Open Hearlog, start recording, and join your Zoom meeting. Hearlog captures your system audio (what you and everyone else says) and transcribes it when you're done.
2. Upload recordings: Use Zoom's built-in recording feature, then upload the file to Hearlog. Get transcription, translation, and summaries after the fact.

The advantage? You get 50+ language transcription, free translation, and 4 summary style options. Plus, this works for ANY meeting platform—Zoom, Meet, Teams, Webex, or even in-person recordings. Otter's bot only works with specific platforms.

The trade-off? You have to remember to start recording (or download the file afterward). It's not as hands-off as Otter's automatic approach.

Which Tool Should You Actually Use?

Here's my honest recommendation based on what you're trying to do:

Choose Otter If...

• You have back-to-back Zoom/Meet/Teams calls and want hands-off recording
• You need speaker identification to track who said what
• Your meetings are exclusively in English (or a handful of well-supported languages)
• Calendar integration is a must-have for your workflow
• You want a polished native mobile app

Choose Hearlog If...

• You need to translate audio between languages
• You work with Indian languages or other less-common languages
• You want multiple summary style options for different situations
• You record from various sources (meetings, interviews, lectures, voice memos)
• You prefer not having a bot visibly join your meetings
• You have existing audio files you need to process
• Free translation is valuable to you (it should be—competitors charge $15-25/month for this)

Or Use Both

Here's a secret: you don't have to pick just one. Some of our users actually use both tools.

They use Otter for their regular internal meetings where auto-join and speaker labels are helpful. Then they use Hearlog for interviews with international sources, when they need translation, or when they want different summary formats for different audiences.

Both tools have free tiers. Try them both and see what sticks.

The Final Verdict

I'm not going to pretend Hearlog is perfect for everyone. If you're a sales team running 20 Zoom calls a week and you need automatic recording with speaker labels, Otter is probably the better fit for that specific workflow.

But if your world involves multiple languages, if you interview people from different countries, if you need flexibility in how your content is summarized, or if you're just tired of hitting limits on translation features—that's where Hearlog shines.

We built Hearlog because the tools that existed didn't work for the multilingual, global workflows we were dealing with. Translation was always a paid add-on. Indian languages were an afterthought. Summary options were non-existent.

If any of that resonates with you, give us a shot. It's free to try, and you'll know pretty quickly whether it fits your workflow.