The best AI note taker for in-person classes

Is a phone good enough to record a class?

Yes, if the room is small or mid-size and you sit near the front. A phone placed on your desk a few metres from the lecturer captures speech that a back-row recording loses to distance and echo, and both Notta and Otter turn that audio into a live transcript you can watch while you write.

The trade-off is battery and session length. A two-hour lecture with the screen kept awake will test an older phone, and Otter's 90-minute per-conversation cap on Pro means a long class outlasts a single recording. Notta's 5-hour per-recording limit and 1,800 monthly minutes on Pro remove both worries for most schedules, which is why it is our default phone pick for classes. If you mainly want to read along in English and your classes are under 90 minutes, Otter's live transcript is also excellent.

If you want the full phone-versus-recorder-versus-desktop-app reasoning, we cover it in our guide to how to record lectures.

Which recorder picks up a lecturer from the back of a hall?

Once you are more than a few rows back, a dedicated recorder with better microphones and advertised pickup distance starts to earn its price. Two models stand out, and the measured classroom data separates them.

In the six-speaker classroom test, the Plaud Note Pro scored the lowest English word error rate of the devices tested, and Plaud advertises pickup at up to 16.4 ft (5 m) with up to 50 hours of recording. The Notta Memo Pro scored 20.4% in the same test — a real but modest gap — while the wearable Plaud NotePin S managed 20.9% and the Anker AI Recorder (Soundcore Work family) 27.7%.

Our recommendation: if you want most of that performance for $40 less, with 600 included transcription minutes a month for eligible owners instead of Plaud's 300 Starter minutes, the $149 Notta Memo is the better-value recorder and our overall recorder pick. One caveat on wearables like the NotePin S: a device clipped to your shirt records where you sit, not where the lecturer stands.

How long can you record in one go?

Per-session limits are the spec students most often miss. A monthly minute allowance is useless if a single recording stops at minute 30.

On phones: Notta allows up to 5 hours per recording on paid plans (the free plan includes 120 minutes of transcription a month, with each conversation capped at 3 minutes), with 1,800 minutes a month on Pro. Otter caps each conversation at 90 minutes on Pro and 30 minutes on free, with 1,200 minutes a month on Pro. Apple Notes and Google Recorder record as long as your storage and battery allow.

On recorders: the Plaud Note Pro advertises up to 50 hours of recording on a charge, and the Notta Memo's related Pro model managed 43 hours of offline recording in the battery test. Recorders also process transcription after sync rather than in real time, so a long class costs you waiting time afterwards, not recording time in the room.

Can you get live captions in class while you record?

Yes, and for many students this is the feature that makes an AI note taker worth having at all. Notta and Otter both show a live transcript on your phone during in-person capture, so you can follow the lecture, check the app is still working, and search the text later.

For deaf and hard-of-hearing students on Android, Google Live Transcribe provides free real-time captions, though it is a captioning tool rather than a note taker — it will not organise or summarise the class for you.

Genio Notes offers live captions too, but only on its Department and Institution subscriptions; individual plans do not include them. If live captions are part of your accommodation, ask your disability service which plan your institution runs.

What if you need recording as a disability accommodation?

Recording as an accommodation is a different situation from recording for convenience, and universities treat it that way. Under arrangements like Section 504 in the US, instructors are generally required to permit recording when a student's accommodation letter approves it, and disability offices often loan recorders or provide apps — Genio Notes is a common choice because it is built around classes, with course labels, slide linking, and timestamped notes.

The practical path: talk to your disability office before the semester starts. They can issue the accommodation letter, arrange the lecturer's agreement, and in many cases supply the tool, which may cost you nothing. Recordings made under an accommodation are for personal study use.

Do you need the lecturer's permission?

Check your institution's policy and ask — that is the short answer. Many universities allow recording for personal study, but policies vary by institution, by class, and sometimes by lecturer, and some course materials are covered by copyright rules that restrict recording.

Accommodation is the exception: if your disability office has approved recording, the lecturer is generally expected to permit it. For the legal background on recording consent, see our guide to recording consent laws.

How do you get a clean recording in a lecture hall?

The difference between a usable transcript and a mess is mostly setup, not software. Before the lecture starts:

Sit as close to the front as you reasonably can — distance is the biggest accuracy cost in every test we cite.

Place the phone or recorder on a solid surface, screen up, microphone pointed at the lecturer, and away from rustling paper and laptop fans.

Turn on airplane mode so an incoming call does not interrupt the recording, and carry a battery pack for back-to-back classes.

Record a 30-second test before the lecture begins and check the live transcript is picking up speech.

Mark key moments as they happen — in Notta you can note timestamps during the live transcript — so you can find the exam hints later without scrubbing three hours of audio.