Listening vs Speechable
Audio
Voice quality

Neural voices aimed at technical prose. Reviewers who bounced from NaturalReader often say the flow sounds more natural here. Not ElevenLabs-showy, but "I can do a lit review on the train" good.

Eco Mode uses your browser’s local TTS (WebGPU-friendly browsers: Chrome 113+, Safari 17+, Firefox 141+). Unlimited and free; quality depends on your device voices. Cloud AI voices (~52 across several languages per their docs) sound better and burn credits. Day-to-day Eco Mode is usable; Premium voices are the “this could be a commute download” tier.
Voice selection


Credit voices cover a real catalog (they advertise dozens of AI voices and multiple languages). Podcast and Lecture modes are separate formats, not just another voice picker: two-speaker discussion vs TED-style single explainer vs straight Listen narration.
Pronunciation

Niche terms and scientific words come up a lot in praise. You can report mispronunciations. Citations can be turned off so you're not hearing bracket noise all afternoon, huge for papers.

Listening controls

0.5x-4x speed. One-tap notes while listening. Some users push audio into a podcast app workflow for walks/chores (mentioned in their testimonials).

Offline audio


MP3 download for offline / phone listening is a first-class path, but it uses credits with a Premium-style voice. Eco Mode itself is in-browser; plan on export if you want AirPods on the train without the laptop.
Document processing
PDFs

PDFs are the product. Organises into typical paper sections (abstract, findings, etc.) per user writeups. Multi-column academic junk is the whole reason this exists vs generic readers.

PDF upload with noise stripping aimed at papers: footnotes, inline citations, headers, reference-list sludge. Section picker so you can skip methods appendices on a first pass. Competing in the same “make papers listenable” lane as Paper2Audio / Listening. Speechable leans harder into podcast/lecture reformats than faithful full-text + figure summaries.
Ebooks

EPUB / MOBI called out on pricing. I've mainly used it for PDFs and web articles.

Web articles

Websites supported, newsletters/essays get the same listen treatment. Secondary to papers for me but nice.

Paste a URL, strip ads, cookie walls UI, nav, sidebars, related-blocks, footer junk. Shows you the cleaned body before play. Strong use case vs Edge/Chrome read-aloud reading the chrome. Does not bypass paywalls: only what’s publicly visible.
OCR & scans


They claim OCR for scanned PDFs and photo uploads (notes, book pages). Useful if true on your scans; I’d still verify on a dense image PDF before betting a literature review on it.
Import workflow

Phone share-sheet upload is what people rave about. Low ceremony.

URL paste, file upload (PDF / ebook-style docs per marketing), photo. No native mobile apps in this product: the desk browser is the app. Fine for laptop workflows; weaker if you only live on phone share sheets.
Layout fidelity

Focus is clean audio of the main text, not preserving the visual PDF layout while you listen. If you need figures on screen synced tightly, look at paper-oriented tools that keep the original PDF in view.

Clean-up is aggressive by design: you hear the argument, not every caption and citation. Great for comprehension; weaker if you need verbatim methods or figure-by-figure fidelity. For that job I’d still open Paper2Audio.
Listening workflow
Document chat

Quick notes while audio plays, built for "that methods paragraph mattered." Not a full Readwise highlight system.

Chat (type or speak) against the imported doc (“what’s the main claim?”, vocab in another language, etc.). Credit-gated with the other AI features. Handy after a podcast skim when one claim didn’t stick.
Offline listening

Mobile offline playback shows up in comparison writeups. Confirm current behaviour in-app if offline commute is make-or-break.

Offline = generate + MP3, not a synced native player with a library on iOS/Android. Bring your own podcast app after download.
UI / UX
iOS app

Share a PDF to the phone app and walk, that's the loop. Minimal UI; people call it bare on purpose. Parallel text-while-audio (read along) made textbooks click for some reviewers.

Android app

Android is supported. Same academic listening idea, not Apple-only.

Web app

Web for uploading / managing when you're at a laptop. Fine.

Runs at app.speechable.co. Upload or paste a URL, review what was extracted, pick sections, then Eco Mode / Listen / Podcast / Lecture / Chat. Feels like a modern SaaS document desk, not a 2015 TTS toolbox. Sign-in with Google or email. Still early (I saw ~v0.7 on the login screen). Expect polish, not Voice Dream depth.
Library & organisation


Free plan is capped at 5 documents in their own marketing. Fine for trying the product; not a semester library. Premium is where the pile grows. Don’t treat it like Readwise Reader’s inbox.
Reading view


You can inspect the extracted text and uncheck sections before audio. That review step matters for long guides and papers where you only want intro + discussion. Not a full Reader View with live word-sync on the original PDF layout the way Paper2Audio does. More “cleaned transcript first.”
Ease of use

Not a settings maze. Upload paper → listen. Compared to NaturalReader's plan chart this feels refreshing.

Paste URL → see cleaned article → play. Or drop a PDF and choose sections before you generate. Fewer knobs than Speechify’s suite; clearer “what am I listening to?” than dumping a messy page into browser Read aloud.
Platforms & ecosystem
Platform coverage

iOS, Android, web, Chrome extension. Enough for a student stack.

Web only for speechable.co. Made-in-Tokyo marketing, Google/email auth. Eco Mode wants a modern browser with WebGPU. No official iOS/Android app for this product. Again, ignore the unrelated App Store listing with a similar name.
Browser extension

Extension for grabbing web reading into the listen queue.

Pricing & limits
Free tier

No real ongoing free tier from what I can tell: short trial that wants a card and auto-renews (comparisons say ~3 days). I'd try it, set a calendar reminder, and not get caught out. Play/App Store reviews I've skimmed are mixed on stability (freezes, weird pauses) even when people love the citation skipping.

Free tier is the hook: unlimited Eco Mode playback, 10 AI credits/month, library capped around 5 documents in their write-ups. No card required to start. Real free listening if you’ll accept browser voices.
Paid value

~$12.99/mo or $39/year for unlimited papers, 4x, PDFs/sites/EPUB/MOBI, 20+ voices. That yearly price is why academics compare it favourably to NaturalReader and Speechify. For paper-heavy semesters it's one of the better value plays.

Premium $10/mo or $72/yr ($6/mo) with 1,200 credits/month. One-time $7 / 500 credits pack that doesn’t expire if you hate subscriptions. Trust-based accessibility discount up to ~50% (students, ADHD/dyslexia/vision, hardship; no proof required). Ethics page also leans hard on local Eco Mode energy use and “no training on your uploads.” Pricing is clearer and kinder than Speechify’s ~$139/yr vibe; credits still mean podcast/chat volume isn’t infinite on free.
Study extras
Extra section
Skip citations & paper chrome

Smart skipping of footnotes, headers, URLs, citation noise is the feature people single out after trying generic TTS. Dyslexia-focused reviews also call out clear text display while listening. This is the academic differentiator, protect it.

Steven's top picks

Best premium text to speech: ElevenLabs voices, word-synced reading view, and a daily-driver app across phone and web.
1st place
Best free text to speech for everyday listening. Handles articles, ebooks, and docs, with a particular edge on complex PDFs and research papers.
2nd place
Audio-first read-it-later with excellent HD voices for articles and newsletters. The Apple listen-later pick when the pile is web reading.
3rd place
