Sales calls, job interviews, client briefings, and family medical appointments all share one problem: the important details live on a phone call, and human memory drops them within hours. AI note takers solved this for Zoom and Teams long ago, but the phone network is a tougher target, so the tools that handle it deserve their own list.
Why phone calls are harder than Zoom calls
Meeting assistants join a video call as a participant and record the cloud audio directly. A phone call on the cellular network gives apps no such access. Both iOS and Android restrict direct call-audio capture, so AI note takers use workarounds: dedicated hardware that records audio externally, a three-way dial-in number, or on-device processing by the phone maker itself. The tools below all solve the phone-call problem without a subscription, each with a genuinely usable free tier.
1. Plaud Note and NotePin — the hardware route
Plaud makes slim magnetic recorders that snap onto the back of a phone and capture calls through a vibration conduction sensor, switching automatically between call and in-person modes. Audio moves to the Plaud app, where it is transcribed in over 112 languages with speaker labels, then summarised into meeting notes, action items, and mind maps.
The free tier: The Plaud app includes 300 free transcription minutes per month, which is more generous than most meeting tools' free plans. The catch is the hardware itself: the Plaud Note Pro costs around $189, so the "free" part only starts once you have paid for the device. A June 2026 review scored it 4.5 out of 5, praising the summary quality for interviews. Buy this only if you record calls daily and want the best audio quality; casual users should start with the apps below.
2. Notta — the multilingual mobile app
Notta captures online meetings, phone calls, and in-person conversations from its iOS and Android apps, producing transcripts with speaker identification and AI summaries. It integrates with Zoom, Google Meet, and Microsoft Teams, plus Slack and Notion for sending notes where the work already happens.
The free tier: 120 transcription minutes per month. That covers roughly four to six short calls, making it ideal for weekly client check-ins rather than daily call-heavy work. Notta's strength is language coverage, so it suits anyone who takes calls across languages and regions.
3. Otter.ai — the most minutes per month
Otter's mobile app records conversations on your phone, and the service turns them into searchable transcripts with speaker labels and AI-generated summaries. Unlike the meeting bots, Otter's mobile app works outside Zoom and Meet, which is what makes it relevant for phone calls.
The free tier: 300 transcription minutes per month — the largest free allowance of any pure app on this list. The binding constraint is a 30-minute cap per conversation, so a 50-minute call only gets its first 30 minutes transcribed. For short calls, that limit rarely matters, and the free plan remains one of the most practical starting points in the category.
4. Google Pixel Call Notes — free and on-device
On recent Pixel phones, Google's Call Assist includes Call Notes, which listens to your phone calls on-device and generates an AI summary with key points and next steps when the call ends. Because processing happens on the phone, there is no per-minute cap, no upload, and no subscription tier to hit.
The free tier: There is none to track — it is a built-in feature. The Pixel Recorder app adds the same on-device transcription for in-person conversations. The limitation is obvious: it only exists on supported Pixel models. If you already carry one, you already have the best free phone-call note taker in existence. If you do not, the rest of this list is your path.
5. iPhone built-in call recording — the zero-setup option
Since iOS 18.1, iPhones can record phone calls natively: tap the record button during a call and both parties hear a disclosure announcement, then the audio and a transcript land in the Notes app, where Apple Intelligence can summarise them on supported models.
The free tier: Completely free, no account and no limits. The summaries are simpler than what Plaud or Otter produce — closer to a clean recap than structured action items — but for interviews and appointments it is more than enough, and it works on the phone you already own.
Free-tier comparison at a glance
| Tool | Free minutes per month | Phone-call method | Catch |
|---|---|---|---|
| Plaud Note / NotePin | 300 transcription minutes | Magnetic hardware recorder | Device costs ~$189 |
| Notta | 120 minutes | Mobile app recording | Small monthly allowance |
| Otter.ai | 300 minutes | Mobile app recording | 30-minute cap per conversation |
| Pixel Call Notes | Unlimited | Built into the phone | Pixel phones only |
| iPhone recording | Unlimited | Built into iOS 18.1+ | iPhone only, simpler summaries |
How to pick one in five minutes
Match the tool to your call pattern. If your calls happen on the cellular network and you own a Pixel or iPhone, start with the built-in option and only move on if the summaries feel too thin. If you call across Android brands, Otter gives you the most free minutes with no hardware to buy. Notta wins for multilingual calls. Plaud is the investment pick for interviewers, journalists, and salespeople who record calls all day and want the clearest audio. And if most of your "calls" actually happen on Zoom, Google Meet, or Teams, you do not need a phone-call specialist at all — tools like Fathom offer unlimited free recordings on those platforms.
One thing to do before you record
Call recording laws vary. Some places require only one party's consent, others require all parties to agree, and the iPhone's audible announcement exists precisely for this reason. Tell the other person you are recording, whether the app announces it or not. It takes five seconds and removes the entire legal question.
Key takeaways
- Phone calls resist the meeting-bot approach, so note takers rely on hardware, mobile-app capture, or built-in phone features instead.
- Otter.ai and Plaud both offer 300 free transcription minutes a month; Notta offers 120 with strong language coverage.
- Pixel Call Notes and iPhone call recording are unlimited and free, but locked to their respective phones.
- Announce the recording at the start of every call — it is good practice and, in many places, the law.
- Start free, upgrade only when you consistently run out of minutes or need the audio quality of dedicated hardware.