Google renamed NotebookLM to Gemini Notebook on July 16, 2026. It is the same research product. You upload sources, and it can generate an Audio Overview. The rename did not add a way to choose the hosts' voices, and it did not start turning the newsletters in your inbox into a scheduled daily podcast.
If you searched for NotebookLM alternatives with custom voices, that is the split. Stay in Gemini Notebook when you have a fixed pile of documents and the default hosts are fine. Use a different app when you want to pick the narrator, or when the thing you want to hear tomorrow is the newsletters you already subscribe to.
Checked against Google's own docs on October 14, 2026.
What the rename changed
Google's announcement, published July 16, 2026, is explicit. NotebookLM is now Gemini Notebook. Existing notebooks stay. The product remains a standalone research tool, and it also shows up inside the Gemini app, with notebooks headed for AI Mode in Search. Google said more than 30 million people and 600,000 organizations were using it.
The same post describes a secure cloud computer that can write and run code against your sources. That rolled out first to Google AI Ultra and some Workspace customers, then toward Pro. Useful if you are doing research. Irrelevant if you wanted a different voice on the walk to work.
Old notebooklm.google links keep working. Google's Workspace note says redirects cover existing shared notebooks.
What the rename left alone
Gemini Notebook's Audio Overview help page lists the controls you actually get:
- Format. Deep Dive is the default, two hosts in a long conversation. Brief is one speaker and under two minutes. Critique and Debate are two-host variants.
- Language. Audio Overviews can be generated in 80+ languages.
- Length. Shorter, Default, or Longer, and the length control is English-only.
- A prompt. You can tell the hosts what to focus on and how expert to sound.
You generate the overview yourself. Google's help page describes no schedule, no inbox connection, and no host or voice picker. Interactive mode, where you join the hosts and ask a question, is English-only and only on newly generated overviews. The mobile app can lag the web version on this feature.
That is a strong tool for a PDF, a course packet, or a set of sources you gathered on purpose. It is a weak tool for "play me what arrived overnight, in a voice I picked."
Three products people keep merging
The rename made this worse, because Google now has two different "daily" ideas next to the old NotebookLM name.
| If you want… | Use | Why |
|---|---|---|
| One research pile, discussed on demand | Gemini Notebook | Upload sources, get an Audio Overview. You do not pick the voices. |
| A morning rundown of Gmail, Calendar, and your Gemini chats | Gemini Daily Brief | A separate Gemini app feature. Text sections, not a newsletter podcast, and not a voice picker. |
| The newsletters and RSS feeds you follow, as a short episode, in a narrator you chose | Junco | Sources you set once. One of eight on-device voices. iOS. |
| The full article, a different voice per newsletter, in the podcast app you already use | Earmail | You forward each piece, or paste a URL. It never connects to your mailbox. |
Junco, when the job is tomorrow's newsletters
Junco is an iPhone app that turns email newsletters and RSS feeds into short episodes. Connect Gmail with read-only access, or subscribe senders to the personal address you get at signup (you@listen.tryjunco.com) and skip Gmail entirely. You can also add from a catalog of 100+ newsletters without handing the writer your real address. A morning episode covers what arrived from the sources you picked. The player has a queue, lock-screen controls, background playback, a sleep timer, and offline listening.
The voice part is specific, because that is the gap in Gemini Notebook. Junco narrates with Kokoro, an open-weight model with 82 million parameters, running on the phone through Apple's MLX framework. Settings offers eight English voices: Heart, Bella, Nicole, Michael, and Fenrir in American accents, and Emma, George, and Fable in British accents. Heart is the default. You pick one narrator for your episodes, preview it in the app, and the next episode uses it. If on-device voices are unavailable, playback falls back to the iPhone's built-in voice.
Two limits, stated plainly. Junco uses one narrator for the show, not a different voice for every newsletter. And the episode is a short script of what mattered, not a verbatim read of a 4,000-word essay. The summary is written on Junco's servers. The audio is generated on your iPhone from that script. If you want every paragraph of one post, use the writer's own voiceover, Substack's in-app play button when it exists, or a tool built to narrate the full piece. We mapped those in how to listen to Substack newsletters.
Junco also does not read your calendar, and you cannot interrupt an episode to ask the narrator a question. Those are Gemini jobs.
Price: 3 sample episodes, then a 7-day free trial of Junco Plus, then $3.99 a month. Cancel in the App Store. A yearly plan is not available yet.
Platform: iOS 17 and later.
Gemini Notebook, when the job is a document pile
Keep Gemini Notebook if you are studying something, not subscribing to it. Upload the sources, pick Deep Dive or Brief, set a language and a focus prompt, and listen. The Brief format is the closest thing it has to a short single-narrator read, and Google caps that format under two minutes. The Deep Dive is the famous two-host conversation. Both use voices Google assigns.
The free Gemini Notebook plan includes standard generation limits and up to 50 sources per notebook. Paid Google AI plans raise those limits, up to 600 sources on Ultra, per Google's plan page. Generation still happens when you ask for it.
Our April comparison argued that a two-host research conversation is the wrong shape for a daily newsletter habit. That argument survived the rename. The name on the tab did not.
Gemini Daily Brief is not the renamed NotebookLM
This mix-up is common, so it gets its own section. Gemini Daily Brief lives in the Gemini app. It looks at Connected Apps such as Gmail and Google Calendar, plus your Gemini chats, and builds a morning brief with sections like "Top of mind" and "Looking ahead." Google's help page says you need to be 18 or older, in the US, on a personal Google account, with Personal Intelligence, Memory, and Google Workspace connected. It is English-only, the rollout is gradual, and it is available in the Gemini mobile app, on the web at gemini.google.com, and in Gemini Live.
It launched at Google I/O in May 2026 as a paid feature. On September 8, 2026, Google made it free for eligible personal accounts in the US. You still may not have it yet.
Daily Brief is the closest thing Google ships to "tell me what my inbox and calendar need from me this morning." It is not an Audio Overview, it does not narrate the newsletters you subscribe to as episodes, and it does not let you pick a voice. If that morning task list is the habit you wanted from Huxe, start there. The longer Huxe map is in best Huxe alternatives in 2026. Treat the prices in that post as a June snapshot. Daily Brief's paywall changed in September.
Earmail, when you want the whole article and a voice per sender
Earmail is the option that matches the "custom voices" query more literally than Junco does. You get a private forwarding address. You forward a newsletter, or paste an article URL. Earmail never connects to your mailbox. It strips ads and footers, adapts tables and footnotes for listening, and puts a private RSS episode in Apple Podcasts, Overcast, Pocket Casts, or any other app that takes a feed.
Earmail lets you assign a different voice to each newsletter, reads interviews as two voices, adds chapters, and can roll a week of forwards into a digest. You can reply to an episode with a question. The trial is 14 days. It narrates the piece, rather than collapsing several overnight issues into one short brief.
Use Earmail when the unit of listening is one article you chose to forward, and you want that article's voice to be distinct. Use Junco when the unit is the pile: sources you chose once, a short episode in the morning, a narrator you picked, on the iPhone, including RSS feeds that never arrive as email.
Which one to open
| Gemini Notebook | Gemini Daily Brief | Junco | Earmail | |
|---|---|---|---|---|
| Best for | A document set you uploaded | Gmail, Calendar, and Gemini chats | Newsletters and RSS, every morning | One forwarded article, in full |
| You pick the voice | No voice picker in Google's Audio Overview controls | No | Yes. Eight English voices, one narrator for your episodes, rendered on iPhone | Yes. A voice per newsletter |
| Shows up tomorrow without you opening it | No. You generate each overview | Yes, if the feature has reached your account | Yes, from sources you already added | Yes, if you forward or auto-forward |
| Listens in | Gemini Notebook, with download | Gemini app, web, or Live | Junco's player | Any podcast app, via private RSS |
| Calendar | No | Yes | No | No |
| Ask a question mid-listen | Yes, in English interactive mode | Chat from a brief item, or Gemini Live | No | Reply to the episode |
| Price | Free tier, paid plans raise limits | Free for eligible US personal accounts | 3 episodes, then $3.99/mo after a 7-day trial | 14-day trial, then a paid plan |
| Platform | Web and mobile, with mobile limits on audio | US, English, personal Google accounts, gradual rollout | iOS 17+ | The podcast app you already use |
FAQs
Is Gemini Notebook the same product as NotebookLM?
Yes. Google renamed NotebookLM to Gemini Notebook on July 16, 2026. Existing notebooks remain available, and old links redirect.
Can you change the voices in a NotebookLM or Gemini Notebook Audio Overview?
No. Google's Audio Overview help page lets you set format, language, length, and a focus prompt. It does not list a voice or host picker. The default hosts are the voices you get.
What is a NotebookLM alternative with custom voices?
For a daily listen of newsletters and RSS, Junco lets you choose one of eight on-device English narrators for your episodes. For a full narration of a single newsletter with a different voice per sender, Earmail does that and delivers a private podcast feed. Gemini Notebook remains the better tool when the job is an uploaded research pile and the default hosts are fine.
Does Gemini Notebook turn newsletters into a daily podcast?
No. An Audio Overview is generated when you ask for one, from sources you uploaded. It does not subscribe to newsletters or publish a morning episode on its own.
Is Gemini Daily Brief the same thing as Gemini Notebook?
No. Daily Brief is a Gemini app feature that summarizes Gmail, Calendar, and your Gemini chats. Gemini Notebook is the renamed NotebookLM research workspace. They are separate products.
Is Gemini Daily Brief free?
For eligible personal Google accounts in the US, yes, as of September 8, 2026. You still need to be 18 or older, in English, with Personal Intelligence, Memory, and Workspace connected. Google is rolling it out gradually.
Does Junco let me pick the voice?
Yes. Eight Kokoro voices, previewed in the app, rendered on your iPhone. One choice applies to your episodes. It is not a separate voice for every newsletter.
Does Junco read the full newsletter?
It summarizes new issues into a short episode. For a word-for-word listen of one post, use the publication's own audio or a full-article narrator.
Is Junco free?
The app is free to download. New accounts get 3 sample episodes, then a 7-day free trial of Junco Plus, then $3.99 a month.
Is Junco on Android?
Not yet. Junco is iOS only. Android is on the roadmap.
The rename was a name change for a research tool people already liked. It did not fill in the voice picker, and it did not build the morning habit of hearing the writers you subscribe to. If that habit is the one you want, download Junco and point it at the senders you keep meaning to read.
How the on-device voices work is in Junco's narration now runs on your iPhone.