Do Students Need an AI Pendant? Lectures, Notes and Exam Material

This article is published by Rehearsal, which makes a phone app that records lectures and meetings and also keeps PDFs, screenshots and links. That overlaps with part of what an AI pendant does, so weigh what follows accordingly. We have not tested any pendant. What we say about NeoSapien and Plaud comes from their own pages and from published reviews, each linked, and prices are as of 29 September 2026.

An AI pendant is a small recorder worn on the neck or clipped to clothing. It listens, passes the audio to an app on your phone, and the app returns text. Students look for one because lectures, discussion groups and thinking aloud all produce speech that is gone once the room empties. The question worth asking is how much of what a student has to remember was ever spoken in a room, and the answer differs for a CAT aspirant in the last two months before the test.

What an AI pendant records and returns

A pendant has a microphone and very little else. NeoSapien's shop page describes Neo 1 as a screenless pendant on a metal chain that weighs 20 g. The company says it picks up audio up to 2 metres away, which it compares to a standard six-seater room. It pairs to the phone by Bluetooth, and reviewers at Business Standard (2 March 2026) and 91mobiles (10 September 2026) describe the phone as the part that uploads the audio for processing.

What comes back is text. The company lists structured notes within a minute after each conversation, tasks and reminders, and a chat feature called Ask Neo for questions about saved conversations. Those are company claims.

Two properties matter for a student.

The first is that the device listens whenever it is active. The company calls this always-on listening with no start or stop buttons, and says a double-tap on the front switches between active and sleep.

The second is that the audio itself is not returned. The company says raw audio is deleted after transcription and only the transcript and summaries are kept, and that is a company claim. Digit (20 August 2026) and The Mobile Indian (12 August 2026) both report that Neo 1 does not give back the original audio, so a quote cannot be replayed to check it.

NeoSapien and Plaud, side by side

Plaud makes recorders that work on the same idea, and its NotePin is the closest match to a pendant. Here is what the two companies list, as of 29 September 2026.

Sources: NeoSapien's shop page, and Plaud's pages for NotePin, NotePin S and plans. Plaud lists its plans in US dollars, and we did not confirm Indian plan prices. Plaud also lists an Unlimited plan at $19.99 a month billed annually.

Prices move. Press coverage quoted Rs 11,999 for Neo 1 in December 2025, and the shop page describes Rs 12,999 as an offer price for a limited period. Check the shop page before buying.

Reviewers of Neo 1 praise the summaries, the search over past conversations, and how it handles Hindi and English mixed in one sentence (Business Standard, Digit, 91mobiles). The complaints that come up again and again are these:

• Privacy and consent for the people near the wearer, named in almost every review.
• No original audio to replay.
• Battery shorter than the company's "2-3 days". 91mobiles says about a day if always active, and Digit says considerably less than claimed.
• Trouble in noisy or crowded places. Digit reports other people's speech mixing in on the Delhi Metro, and Firstpost (29 May 2026) found it poor in rallies and cafes.
• Android setup. Business Standard and Digit both describe it as harder than on an iPhone.

Plaud is the better pick if you want the original recording kept on the device, or a photo of a whiteboard alongside the audio (NotePin S). NeoSapien is the one to look at first if your conversation mixes Hindi and English, since reviewers single that out. We have not compared it with Plaud on this.

What a CAT aspirant has to remember

CAT 2026 is a computer-based test on Sunday, 29 November 2026, in three sessions, conducted by IIM Indore. The official press release of 26 July 2026 says it lasts 120 minutes and has three sections: Verbal Ability and Reading Comprehension (VARC), Data Interpretation and Logical Reasoning (DILR), and Quantitative Ability. Each section gets exactly 40 minutes, and candidates cannot switch to another section while one is running. The same release says a mock exam to understand the format is available on the CAT website.

Now list what an aspirant is carrying by late September:

• Formula sheets and previous-year papers that a coaching batch shared as PDFs.
• Screenshots of questions missed in mocks.
• Mock analyses, meaning the scorecard and the sectional breakup.
• Passages and articles saved for VARC practice.
• A few voice notes where the aspirant talked a solution through.

Only the last item is speech, and it is speech the aspirant chose to record. The rest arrives as PDFs, images, links and forwards in a chat group. This is our reasoning from how CAT material is shared, and no survey of aspirants stands behind it.

Here is where the pendant question comes in. NeoSapien's shop page lists six kinds of user: senior executives, sales teams, healthcare providers, journalists and writers, educators and researchers, and market researchers and strategists. Students are not on the list, and the page describes Neo 1 as a wearable AI meeting notetaker for professionals. That the page does not name students is our inference from the published page, and it does not mean Neo 1 is unsuitable for them. Tech2, in a hands-on review dated 26 June 2026, names students among the people it thinks the device suits.

We also did not find NeoSapien's pages describing capture of PDFs, screenshots, links or forwarded messages. That too is an inference from what the pages say, and the company may do things its pages do not list. Plaud's NotePin S does list photo capture.

Where a pendant helps a student

A pendant suits some student situations well.

• Lectures. Hands stay free for writing or drawing while the pendant records.
• Discussion groups. A study group or a project meeting produces decisions and to-dos that are easy to lose. A transcript with tasks pulled out helps here, though Digit's report of other people's speech mixing in applies to a crowded room.
• Thinking aloud. Some students talk a problem through aloud, and a transcript keeps what was said. A phone can do this job as well.

There are limits. NeoSapien's own figure of 2 metres is smaller than most lecture halls. The reviews we read mostly describe meetings, desk work and events, and whether a pendant hears a lecturer clearly from the back of a large hall is not something they settle. If you buy one, record a short stretch of a real class first and listen to the result before you rely on it.

An always-on device also records more than a class. 91mobiles (10 September 2026) notes that it collects random chatter if left on. Switching it to sleep between classes is the wearer's job.

What it costs against a phone app

A phone that already sits in your bag can record a lecture at no extra cost. The figures, as of 29 September 2026:

• NeoSapien Neo 1: Rs 12,999 offer price.
• Plaud NotePin: Rs 16,990, plus a free plan of 300 minutes a month, which is five one-hour lectures. Pro gives 1,200 minutes, or 20 hours, for $8.33 a month billed annually.
• Rehearsal free tier: voice recording, transcription and playback, with allowances shown in the app.
• Rehearsal Unlimited: Rs 299 a month or Rs 2,999 a year at the current discounted price, against a regular Rs 399 and Rs 3,999. The pricing page has the current terms.

Rs 12,999 equals a little over four years of the discounted yearly Unlimited plan. The comparison is rough, because a pendant and an app do different jobs, and Rehearsal's free tier costs nothing at all.

What the phone gives up is the wearable itself. You start the recording, and the phone has to stay in the room and stay charged. A pendant frees you from that, and for some people that is worth Rs 13,000 or more.

Where Rehearsal overlaps

Rehearsal is a phone app for iOS and Android. A student starts a recording, and Rehearsal turns it into a transcript, a summary with key takeaways, and notes that can be searched and questioned later. Its FAQ lists lectures and group meetings as something it can transcribe. Free includes recording, transcription and playback. Unlimited adds longer recordings with complete transcripts, AI summaries and action items, and background recording, which lets the phone record with the screen off. Recordings and transcripts are stored, so the original audio can be played back beside the text.

The FAQ also says voice-note audio is transcribed by xAI's Grok and analysed by OpenAI, and that content is never used to train any provider's models. NeoSapien makes its own privacy claims, which are listed above as company claims. Neither company's claims were audited for this article, so read both as claims.

A pendant keeps what was said around you while it was active. Rehearsal keeps what you chose to put in: recordings you start, PDFs, screenshots, links, and files you forward from WhatsApp or Telegram. You pick the files, and Rehearsal does not copy whole chats. Both can turn a spoken lecture into searchable text. They differ in the wearable, and in Rehearsal holding written material as well.

Someone who owns a pendant can use both, the pendant for the room and Rehearsal for the folder of PDFs and screenshots. Both can also be read from ChatGPT and Claude. NeoSapien lists a way to use Neo 1 memories in those apps on its homepage, and Rehearsal offers a connector on Unlimited.

Rehearsal is not a CAT preparation app, and it has no CAT mocks or question bank. It also has no desktop app, while NeoSapien and Plaud both list one for online meetings. If you attend online classes on a laptop and want them captured there, that is a reason to look at NeoSapien or Plaud. The wider comparison of note apps is at second brain apps compared.

Recording in class

Recording a class involves other people, and the duty to ask sits with the person recording, whichever device is used. NeoSapien's founder told Mint in January 2025 to "think of this device as the camera on your phone", and said the onus of consent sits with the user. The Mobile Indian says an indicator light is "not the same thing as consent", and Business Standard says "you have to inform people". A recording of a lecture holds the teacher's voice and classmates' voices, on a pendant and on a phone app alike.

Some practical steps, offered as guidance and not as legal advice:

1. Ask the teacher before you record, and say what it is for. Something like "May I record this lecture for my own revision? I will not share it" is enough to start the conversation.
2. Read the institution's rules on recording. They differ from one institution to another, and some classes may not allow it.
3. If the answer is no, respect it. Ask for the slides or reading list instead.
4. Keep recordings private. Do not post them or send them to others without permission.
5. With an always-on pendant, switch it to sleep outside class, so that corridor and hostel conversations are not captured.

The exam hall

We read the CAT 2026 Information Bulletin, which the official CAT site links to, for any passage on electronic devices, wearables, watches or prohibited items at the test centre, and found no such passage. The bulletin does not mention wearables specifically.

It does say that candidates can download admit cards from 4 November 2026 until 29 November 2026, and that the name of the test centre will be indicated on the admit card. It also says that instances of incorrect information or process violation "will lead to immediate disqualification" from the selection process. That sentence is general and does not name devices.

The admit card instructions and the official CAT website are where test-day rules are set out, so read them when the admit card is released. A pendant is a listening device. If you own one, our advice is to leave it at home on 29 November unless the admit card says otherwise. This is a precaution of ours, and it makes no claim about what the rules say.

What to keep after class

Whether the material arrives by pendant, phone or chat forward, the CAT notes worth keeping are shaped by the three sections. The CAT notes guide sets these out in full. In short:

• VARC, a reading log. One line per passage that beat you: the topic, where you lost the thread, and the words you met in context.
• DILR, a set-selection log. Which set types you picked, which you skipped, and which choice you regretted. With 40 minutes and no switching, choosing sets is the decision that repeats.
• Quant, formulas with their trigger, plus an error log. Write each formula with the kind of question that calls for it, then log each mistake with its category: wrong formula, misread condition, careless arithmetic, or a question you should have left.

A lecture recording feeds these notes only after someone reads the transcript and pulls out what belongs in a log. If a coaching class allows recording, the transcript is a starting point, and the log entry is a line you write yourself. The screenshot of a missed question and the coaching PDF go in the same place as the transcript, so one search finds all three.

Once results arrive, the CAT prediction guide covers percentiles and calls.

Questions students ask

Can I use an AI pendant in a lecture?

It depends on the teacher and the institution. Ask before you record, follow the institution's rules, and remember that a pendant records everyone within range while it is active. This article gives no legal advice.

Can I wear an AI wearable in the CAT exam?

The CAT 2026 Information Bulletin, checked on 29 September 2026, does not mention wearables specifically. Check the admit card instructions and the official CAT website. Our own advice is to leave a listening device at home unless the admit card allows it.

Is there a free alternative to an AI pendant?

Yes, a phone app. Rehearsal's free tier includes voice recording, transcription and playback, with allowances shown in the app. Any voice recorder already on the phone will also capture audio. The pricing page lists Rehearsal's current plans.

Which AI note taker works for students?

It depends on what you need to keep. If you want a wearable that captures conversation hands-free and can afford Rs 12,999 or more, a pendant such as Neo 1 or NotePin fits. If you want no extra device and a free start, a phone app fits. If you want the original recording beside the transcript, Plaud lists on-device storage and Rehearsal keeps recordings with playback, while Neo 1 does not return the audio. Rehearsal also holds PDFs, screenshots and forwarded files, which we did not find on NeoSapien's pages. We publish Rehearsal, so weigh that.

Does a pendant keep the original audio?

It depends on the product. NeoSapien says raw audio is deleted after transcription, and Digit and The Mobile Indian report that Neo 1 does not return it. Plaud lists 64 GB of on-device storage. Rehearsal stores recordings and transcripts, with playback.

How much does an AI pendant cost in India?

As of 29 September 2026, Neo 1 is listed at Rs 12,999 (MRP Rs 15,999) and Plaud's NotePin at Rs 16,990. Prices change, so check the makers' pages.

Is NeoSapien made for students?

Its shop page names other groups and does not name students. That is our inference from the published page, and one reviewer, Tech2, says students are among the people it suits.