Anki vs Speechify: Which Is Better for Teachers?
Anki and Speechify aren't really competing for the same job. Anki is a free, open-source flashcard app built around spaced repetition to move facts into long-term memory; Speechify is a text-to-speech tool that reads any document, PDF, or webpage aloud, built primarily for reading accessibility and multitasking. A teacher deciding "which is better" first needs to name which problem they're actually solving.
Quick Answer: Choose Anki when the goal is long-term retention — vocabulary, formulas, dates, vocabulary lists a student needs to actually remember weeks later. Choose Speechify when the goal is making text accessible — struggling readers, students with dyslexia, English language learners, or anyone who benefits from hearing text read aloud. Many classrooms end up using both, for entirely different moments in a lesson.
These two land on the same "AI tools for teachers" lists constantly, which creates a false impression that they're interchangeable. They're not. One is a memory tool. The other is a reading-access tool. Understanding that split matters more than picking a "winner" — because the wrong comparison leads a teacher to buy the wrong tool for the actual problem in their classroom.
Say you teach Grade 6 science and have a unit full of vocabulary — mitochondria, photosynthesis, condensation — that students need to recall accurately weeks later on a cumulative test. That's an Anki problem. Now say a student in that same class reads two grade levels behind and struggles to get through the textbook chapter at all. That's a Speechify problem. Same classroom, two different needs, two different tools.
What Anki Actually Does
Anki is a free flashcard app built around spaced repetition — an algorithm that schedules a card for review right before a student is likely to forget it, rather than reviewing everything equally often. A student creates or downloads a deck of question-and-answer cards; Anki tracks how well they know each one and adjusts future review timing card-by-card.
- Spaced repetition scheduling: cards a student struggles with reappear sooner; cards they know well get pushed further out.
- Free on most platforms: Anki's desktop app (Windows, Mac, Linux), Android app (AnkiDroid), and web version are all free.
- Shared decks: thousands of community-built decks exist for everything from vocabulary to anatomy, downloadable for free.
- Deep customization: cards can include images, audio, and cloze-deletion (fill-in-the-blank) formats, not just plain text.
The research behind why it works
Anki's core method leans on retrieval practice — the well-documented finding that actively recalling information strengthens memory more than simply re-reading it. Roediger and Karpicke's (2006) research on the "testing effect" found that students who practiced retrieval remembered material significantly better on a delayed test than students who just restudied the same material repeatedly. Spaced repetition apps like Anki are essentially retrieval practice on an algorithmic schedule.
Where Anki costs money
Anki itself is free everywhere except one place: the official iOS app, AnkiMobile, is a one-time paid purchase (roughly $25) rather than free. Everything else — desktop, Android, and syncing through AnkiWeb — costs nothing. A school standardizing on iPads should budget for that one exception if students will use Anki on school-issued devices.
What Speechify Actually Does
Speechify is a text-to-speech app that converts written text — PDFs, Google Docs, webpages, or a photographed page — into spoken audio using AI-generated voices, with adjustable playback speed. A student uploads or scans a document, picks a voice, and listens while following along, or without the text visible at all.
- Multi-format input: PDFs, Word docs, webpages, emails, and photographed printed text via optical character recognition (OCR).
- Adjustable speed: playback can range from normal reading pace up to several times faster for students comfortable listening quickly.
- Voice variety: multiple AI-generated voice options, with a browser extension and mobile app for reading on the go.
- Free tier limits: core reading works for free, with faster speeds, premium voices, and heavier usage typically reserved for a paid subscription.
Why accessibility researchers pay attention to text-to-speech
Text-to-speech tools sit inside a broader accessibility framework called Universal Design for Learning (UDL), developed by CAST, which advocates offering multiple ways for students to access the same content. For a student with dyslexia specifically, the International Dyslexia Association has long noted that decoding difficulty doesn't reflect comprehension ability — a student can understand grade-level content perfectly well once the barrier of decoding printed text is removed.
Side-by-Side Comparison
The two tools solve different problems well enough that a direct feature comparison mostly highlights how little they overlap.
| Dimension | Anki | Speechify |
|---|---|---|
| Core purpose | Long-term memory retention via spaced repetition | Making text accessible through text-to-speech |
| Content type | Flashcards (Q&A, cloze, image, audio) | Any document, PDF, webpage, or photographed text |
| Cost model | Free on desktop/Android; paid one-time iOS app | Free tier with limits; subscription for full features |
| Best subject fit | Vocabulary-heavy or fact-heavy subjects | Any subject where reading itself is the barrier |
| Student effort required | Active — student answers each card | Passive — student listens |
| Underlying science | Retrieval practice / spaced repetition | Universal Design for Learning, assistive reading |
Where Anki Excels
Anki's biggest strength is that its underlying method is backed by decades of memory research, not just a marketing claim about "smart" scheduling. For subjects with a heavy factual-recall component — vocabulary lists, historical dates, scientific terms, math facts — few tools match Anki's combination of being free and genuinely effective.
- Genuinely free across most platforms, with no feature gate on the core spaced-repetition engine itself.
- Massive library of pre-built decks, saving a teacher the work of building a deck from scratch for common subjects.
- Works offline once a deck is downloaded, useful for students without reliable home internet.
- Highly customizable card types, including images and audio for younger learners or language classes.
Where Anki falls short
Anki's interface is genuinely unfriendly to a young or first-time user, and the tool assumes a level of self-directed discipline that not every K-9 student has yet. There's no built-in classroom-management layer — no way for a teacher to see who reviewed their deck today without a separate system. It's a personal study tool first, a classroom tool only with extra setup.
Where Speechify Excels
Speechify's biggest strength is removing the decoding barrier for students who understand content perfectly well once they don't have to fight through printed text to get it. For English language learners, students with dyslexia or other reading disabilities, or a student simply reading below grade level, that barrier removal can be the difference between engaging with a text and giving up on it.
- Multi-format flexibility: the same tool reads a PDF worksheet, a Google Doc, or a photographed textbook page.
- Adjustable pace: a student can slow down for a dense passage or speed up for a familiar one.
- Works across subjects immediately, since it reads whatever text a teacher already assigns — no separate content to build.
- Supports multitasking-based learning, letting a student listen to a chapter while following along visually, reinforcing both channels at once.
Where Speechify falls short
Speechify doesn't build long-term memory the way Anki does — it makes content accessible in the moment, but a student still needs a separate strategy for retaining what they heard. The most useful features — premium voices, higher playback speeds, unlimited daily use — typically sit behind a paid subscription, which can be a real budget barrier for an individual teacher trying to help one or two students.
Head-to-Head on Specific Classroom Tasks
Lining the two tools up against concrete classroom moments makes the "different problems" framing concrete.
| Task | Better fit | Why |
|---|---|---|
| Memorizing vocabulary for a cumulative test | Anki | Spaced repetition targets exactly this kind of recall |
| Helping a student with dyslexia access a grade-level text | Speechify | Removes the decoding barrier without simplifying content |
| Reviewing historical dates before an exam | Anki | Retrieval practice is well suited to discrete facts |
| Reading a dense textbook chapter aloud | Speechify | Converts any assigned text to audio on demand |
| Building long-term retention of math formulas | Anki | Cards resurface right before a student is likely to forget |
| Supporting an English language learner with a written assignment | Speechify | Audio support alongside text builds comprehension |
| Studying for a spelling test | Anki | Cloze-deletion cards work well for spelling recall |
| Making a worksheet accessible for a low-vision student | Speechify | Reads the text aloud regardless of format |
How Each Tool Actually Gets Set Up
The onboarding experience differs enough between the two that it's worth planning for before rolling either out to a class. Anki's setup involves more upfront decisions; Speechify's is closer to install-and-go.
Getting started with Anki
- Install the app on desktop, Android, or purchase AnkiMobile for iOS.
- Create or download a deck — either build cards from scratch or search AnkiWeb's shared-deck library for an existing one on the topic.
- Set a daily review limit. Anki defaults to reviewing every due card, which can overwhelm a new user; capping the daily count keeps sessions manageable.
- Sync across devices through a free AnkiWeb account, if a student studies on more than one device.
Getting started with Speechify
- Install the app or browser extension, or sign in through the web version.
- Upload or open a document — a PDF, a Google Doc, a webpage, or a photographed page via the built-in scanner.
- Choose a voice and playback speed, adjusting both until they feel comfortable rather than accepting the default.
- Decide whether text stays visible during playback — following along visually while listening reinforces both channels for many students, though some prefer audio-only.
Anki's setup asks a student to make more decisions upfront — which deck, how many new cards per day, which settings. Speechify's setup is closer to open-a-document-and-listen, which is part of why it tends to onboard faster for a first-time or younger user.
Privacy and Data Considerations
Both tools can touch student-identifiable information — Anki through account sync, Speechify through uploaded documents that may contain a student's own writing or name. FERPA (1974) governs education records maintained by schools, and any tool syncing student study data or reading uploaded assignments falls under that umbrella once a school formally adopts it.
Three questions worth asking before either tool goes classroom-wide:
- Does Anki's optional cloud sync (AnkiWeb) store any identifiable student information, and is that acceptable under your district's data agreement?
- What does Speechify's privacy policy say about documents uploaded for reading — particularly assignments containing a student's name or handwriting?
- Has either tool been vetted by your district's technology office, since neither was originally built as a K-12-specific classroom product?
CoSN's (2024) reporting has consistently placed student-data privacy among K-12 technology leaders' top ongoing concerns — worth the extra few minutes of checking before either tool reaches a full class roster. For the fuller vetting framework, see Is ChatGPT FERPA Compliant? What Schools Need to Know.
Grade Bands and Subjects: Does Either Tool Fit Better?
Both tools span a wide range, but their natural fit shifts by grade and by student need rather than by grade alone.
- Grades K-3: Anki's interface is generally too complex for independent use at this age; a teacher-led, simplified version is possible but takes real setup. Speechify fits more naturally here for early readers who need support accessing text above their independent reading level.
- Grades 4-6: Anki becomes workable with teacher guidance, especially for vocabulary and math facts. Speechify remains valuable for any student reading below grade level, a common gap by upper elementary.
- Grades 7-9: Anki fits well for students building independent study habits ahead of high school, particularly for language classes and science vocabulary. Speechify continues to serve students with identified reading needs, plus anyone tackling denser assigned reading.
Special education and accessibility contexts specifically
For a student with an IEP or 504 plan that names assistive reading technology, Speechify is the more directly relevant tool of the two. Anki can still support that same student's memory work once content is accessible, but it doesn't address the reading-access barrier on its own.
Cost and Access
Both tools are largely free at the tier most classrooms actually need, with the paid layer reserved for extra depth rather than core function.
- Anki is free on desktop and Android, with only the official iOS app (AnkiMobile) as a one-time paid purchase.
- Speechify offers a free tier for core reading, with faster speeds, premium voices, and higher usage limits gated behind a subscription.
- EduGenius, for generating the actual classroom materials — worksheets, flashcard sets on new topics, quizzes — runs on a credit system: new users start with 25 welcome credits, with paid plans at $7.99/month (500 credits, Starter) or $15.99/month (1,000 credits, Professional).
Using Both Together in the Same Lesson
A teacher doesn't have to choose one tool for the whole class — Anki and Speechify slot into different stages of the same lesson without competing.
- Assign a reading passage, using Speechify for any student who needs audio support to access it at grade level.
- Pull key vocabulary or facts from that passage into an Anki deck for spaced-repetition review over the following weeks.
- Let struggling readers listen first, then review facts second — accessibility and retention working as two separate, sequential steps rather than one tool trying to do both.
- Revisit the Anki deck before a cumulative assessment, while Speechify continues supporting access to any new reading assigned in the meantime.
EduGenius fits a related but separate gap: generating the underlying classroom materials — worksheets, flashcard sets on a new topic, quizzes — that neither Anki nor Speechify creates on its own. A teacher could use EduGenius to build a first-pass vocabulary list and quiz for a new unit, then move the key terms into Anki for retention practice while Speechify handles read-aloud access to the full text.
For a related comparison in the same pillar, see The Best Free Alternative to Symbolab.
Pro Tips for Getting the Most from Either Tool
A few habits make both tools meaningfully more effective than a default, out-of-the-box setup.
- Don't make Anki review optional homework with no structure. A short, consistent five-minute review built into class routine works better than an unsupervised nightly assignment for younger students.
- Preview Speechify's voice options with a student before committing. Voice preference is personal, and the wrong voice can undermine an otherwise useful accessibility tool.
- Use Anki's image and audio card types for language classes, not just plain text — a picture-and-word pairing works especially well for early vocabulary acquisition.
- Set Speechify's playback speed deliberately, not at default. A student new to audio-supported reading usually needs a slower pace than one who's used the tool for months.
What to Avoid
Most disappointment with either tool comes down to one of these mismatches.
- Expecting Speechify to build long-term retention. It solves an access problem, not a memory problem — pair it with a retrieval-practice tool like Anki for that second piece.
- Assigning Anki with no guidance to a younger student. The interface has a real learning curve; skipping onboarding often means the tool goes unused.
- Assuming Speechify's free tier covers everything a heavy user needs. Premium voices and higher speeds are commonly gated behind a subscription.
- Treating either tool as a substitute for identified accommodations. A student with a formal IEP or 504 plan needs the specific accommodations it lists, not just "a reading app," even if Speechify overlaps with some of them.
Key Takeaways
- Anki and Speechify solve different problems — long-term memory retention versus reading accessibility — and rarely compete for the same task.
- Anki is a free spaced-repetition flashcard app, backed by retrieval-practice research including Roediger and Karpicke (2006), with only the iOS app as a paid exception.
- Speechify is a text-to-speech tool that reads PDFs, documents, and webpages aloud, rooted in Universal Design for Learning principles from CAST.
- Anki fits fact-heavy subjects like vocabulary, dates, and formulas; Speechify fits any subject where reading itself is the barrier.
- Both tools skew toward individual student use rather than built-in classroom-management dashboards.
- Many classrooms use both together — Speechify for access, Anki for retention — rather than choosing one over the other.
- Neither tool generates original classroom materials — that's a separate gap a tool like EduGenius is built to fill.
Frequently Asked Questions
Is Anki or Speechify better for teachers?
It depends on the goal. Anki is better for building long-term retention of facts, vocabulary, and formulas through spaced repetition. Speechify is better for making text accessible to struggling readers, English language learners, or students with dyslexia. Many teachers use both for different purposes within the same class.
Is Anki completely free?
Mostly. Anki's desktop app, AnkiDroid on Android, and AnkiWeb sync are all free. The one exception is AnkiMobile, the official iOS app, which is a one-time paid purchase rather than free.
Does Speechify work for students with dyslexia?
Yes, that's one of its primary use cases. Speechify converts text to audio, removing the decoding barrier that makes reading difficult for many students with dyslexia, aligning with Universal Design for Learning principles from CAST around offering multiple ways to access the same content.
Can Anki and Speechify be used together in the same classroom?
Yes, and it's a common pairing. A teacher can use Speechify to make an assigned reading accessible to students who need audio support, then pull key vocabulary or facts from that same reading into an Anki deck for spaced-repetition review over the following weeks.