Diffit
Instantly differentiate any text, video, or topic for any reading level.
The best AI tool for reading-level differentiation — does one thing better than any general AI tool, with a genuinely unlimited free tier and the cleanest student-data posture in the category.
Quick verdict
Diffit takes any topic, article URL, PDF, or YouTube video and generates a reading passage at the exact grade level you specify — plus comprehension questions, vocabulary lists, and graphic organizers. The free tier covers the full workflow with no generation limits. Students never log in, which gives Diffit the cleanest FERPA posture in the K-12 AI category. The limitation is scope: Diffit does one thing extremely well and requires other tools for the rest of lesson planning.
Pros and cons
Pros
- Free tier covers the full differentiation workflow with no generation limits
- Zero student data collected — no student login, simplest FERPA posture in the category
- Generates all reading level variants from a single input simultaneously
- Works from URLs, PDFs, and YouTube — not just typed topics
Cons
- Single-purpose tool — does one thing well but requires other tools for full lesson planning
- Export to Google Docs and Microsoft Word requires a paid plan
- No student-facing features, no LMS integration
What Diffit does well
The most focused differentiation tool in K-12 AI
Diffit does not try to be an all-in-one platform. It solves a single, specific problem that teachers with mixed-ability classes face constantly: a text or topic exists at one reading level, and you need it at three simultaneously.
The workflow is direct. A history teacher finds a primary source document at a 10th-grade reading level. They paste the URL into Diffit, select grade 5 and grade 7 output levels alongside the original, and within 30 seconds have three reading passages — each with comprehension questions, a vocabulary list, and a graphic organizer, all derived from the same source content. No rewriting. No hunting for alternative texts. No separate lesson planning step.
This is meaningfully better than what general AI tools produce for the same task. A teacher who prompts ChatGPT or Claude to "rewrite this article at a 5th-grade level" gets a prose rewrite with no structured questions, no vocabulary support, and no graphic organizer. Diffit produces a classroom-ready handout. The difference between a prose rewrite and a classroom-ready handout is the editing time the teacher doesn't spend.
Free tier with no generation limits
Most free tiers in EdTech are trials with an expiration date or caps designed to force upgrades. Diffit's free tier is genuinely unlimited for the core workflow — leveled passages, comprehension questions, vocabulary lists, and graphic organizers are all available without a subscription, without a credit card, and without a generation count.
The only feature behind the paywall is export format: the paid Individual Teacher plan ($14.99/month or $149.99/year) adds Google Docs, Google Slides, and Microsoft Word export. Free tier users export to PDF.
For most teachers, PDF export is sufficient — print the handout or upload the PDF to Google Classroom. Teachers who want to edit the output in Google Docs before distributing benefit from the paid export. But the free tier is not a degraded experience designed to push paid conversion. It is a complete tool with one practical limitation.
Zero student data — the cleanest FERPA posture in the category
Students never log in to Diffit. Teachers generate the materials; students receive paper or PDF handouts. No student names, IDs, or any identifying information ever enters the platform.
This is the simplest possible FERPA compliance posture: if no student data is collected, there is nothing to protect. For teachers in districts with stringent EdTech approval processes — where student-facing platforms require months of legal review — Diffit can be used today without any district approval, because it is a teacher productivity tool, not a student-facing platform.
The 93% Common Sense Media privacy rating, FERPA and COPPA compliance, and SOC 2 certification reinforce what the product design already guarantees: this tool has no exposure to student data.
What Diffit doesn't do well
Single-purpose tool — you will need other tools too
Diffit's specificity is its strength and its constraint. A teacher who wants AI to help with lesson planning, quiz generation, rubric creation, parent communication, and differentiated reading materials will find Diffit covers only the last item. Every other workflow requires a different tool.
This is not a criticism of Diffit's design — it is a fair description of scope. For teachers evaluating AI tools for the first time and looking for one platform to cover multiple needs, Diffit is a component, not a complete solution. MagicSchool or Eduaide.Ai would better serve teachers who want breadth. Diffit serves teachers who have a specific differentiation bottleneck.
Google Docs and Word export behind the paywall
The free tier's PDF-only export is the practical friction point for many teachers. A teacher who wants to edit the Diffit output — adjust a question, add a sentence, change the formatting for their classroom template — needs to either work from a PDF (which requires copying text out) or upgrade to the paid plan for Google Docs export.
At $14.99/month, the Individual Teacher plan is reasonably priced. But for teachers who already pay for MagicSchool Plus ($8.33/month annually) or another platform, adding Diffit as a secondary subscription adds up. Teachers who primarily need Diffit's differentiation output as final PDF handouts will not feel this limitation.
No LMS integration
Diffit does not integrate with Canvas, Schoology, Google Classroom assignments, or any LMS for direct assignment delivery. Teachers export materials and upload or distribute them separately. For teachers who run digital-first classrooms where every assignment is delivered through an LMS, this is a manual step that other tools in the category avoid.
Pricing breakdown
Free
- Unlimited differentiated reading passages
- Comprehension questions and vocabulary lists
- Graphic organizers
- PDF export
- FERPA and COPPA compliant
- No student login required
Individual Teacher
$12.50/mo billed annually
- All Free features
- Google Docs and Slides export
- Microsoft Word export
- Additional export formats
School
- All Individual Teacher features
- Admin dashboard
- School-wide deployment
- Priority support
The free tier is the correct starting point for any teacher. The Individual Teacher plan at $14.99/month ($149.99/year, equivalent to $12.50/month) is worth considering for teachers who use Diffit regularly and want to edit outputs in Google Docs or assign through Microsoft Word. School plans are custom and contact-based.
Who it's for
Best for
- Teachers with mixed-ability classes or ELL students who need leveled reading materials fast
- Teachers who spend significant time finding or rewriting texts at multiple reading levels
- Schools that want a zero-student-data differentiation tool with strong privacy credentials
Not for
- Teachers looking for an all-in-one lesson planning platform
- Districts that need LMS-integrated assignment delivery
Diffit is the right choice for:
- Teachers with mixed-ability classrooms who regularly need the same content at multiple reading levels
- ESL and ELL teachers who need to lower the reading level of grade-appropriate texts without losing content
- Teachers in districts with strict EdTech approval processes who cannot wait for a student-facing platform to clear review
- Any teacher who wants to start using AI for differentiation today without a budget conversation
Who it's not for
Teachers who need an all-in-one AI lesson planning platform will find Diffit's scope too narrow — it addresses differentiated reading materials and nothing else. Teachers who need digital assignment delivery through an LMS will have a manual export step that other tools avoid.
Alternatives
MagicSchool includes differentiation tools within its broader 80+ tool library. For teachers who want differentiation plus lesson planning, quiz generation, and student feedback in one platform, MagicSchool's free tier covers all of it. The differentiation output is less polished than Diffit's, but the breadth justifies the trade-off for many teachers. See our MagicSchool review.
Eduaide.Ai offers one-click ELL and IEP differentiation alongside 110+ other resource types at $5.99/month. For teachers who want differentiation plus a full lesson planning workspace at a low price, Eduaide.Ai covers both. See our Eduaide.Ai review.
For a full comparison of AI tools for K-12 educators, see our best AI tools for teachers guide.
The verdict
Diffit earns a 4.4 rating by doing one thing exceptionally well. The reading-level differentiation output is the most polished in the category, the free tier is genuinely unlimited, and the zero-student-data design gives it a FERPA posture no other tool can match.
The path to a higher rating runs through expanded scope — Google Docs export on the free tier, LMS integration, and some adjacency to broader lesson planning would make Diffit a daily-use tool rather than a specialist supplement. As it stands, Diffit is an essential addition to a teacher's AI toolkit, not a replacement for one.
Try Diffit FreeFAQ
Frequently asked questions
- Is Diffit free?
- Yes. Diffit's free tier covers the core differentiation workflow — generating leveled reading passages, comprehension questions, vocabulary lists, and graphic organizers — with no generation limits and no expiry. PDF export is included free. The Individual Teacher plan ($14.99/month or $149.99/year) adds Google Docs, Google Slides, and Microsoft Word export formats.
- Is Diffit FERPA compliant?
- Yes. Diffit is FERPA and COPPA compliant, holds SOC 2 certification, and received a 93% privacy rating from Common Sense Media. Critically, students never log in to Diffit — the tool is entirely teacher-facing with zero student data collected. This is the cleanest FERPA posture of any tool in the K-12 AI category.
- What reading levels does Diffit support?
- Diffit generates leveled content from 1st grade through 12th grade reading levels. Teachers specify the target level and Diffit adjusts vocabulary, sentence complexity, and concept presentation accordingly. Multiple reading level variants can be generated from the same source simultaneously — a common workflow for mixed-ability classrooms.
- What sources can Diffit differentiate from?
- Diffit works from four input types: a typed topic or concept, a URL (article or webpage), a PDF upload, and a YouTube video URL. The tool extracts the source content and generates a leveled reading passage plus accompanying comprehension questions, vocabulary list, and graphic organizer.
- How does Diffit compare to MagicSchool for differentiation?
- Both tools offer differentiation features, but they approach it differently. Diffit is purpose-built for reading-level differentiation — it generates polished, classroom-ready leveled passages from any source with no student login required. MagicSchool's differentiation tool is one of 80+ features and requires more teacher configuration to achieve the same output quality. For teachers whose primary need is leveled reading materials, Diffit's free tier outperforms MagicSchool's differentiation tools.
- Does Diffit work for ELL students?
- Yes. Diffit is widely used by teachers with English Language Learner students. The ability to take a grade-level text and instantly generate a lower-reading-level version — with simplified vocabulary and comprehension questions — is the core ELL use case. The tool does not require teachers to identify students as ELL or collect any student data.
- Can Diffit export to Google Classroom?
- Diffit exports to Google Docs and Google Slides on the Individual Teacher paid plan ($14.99/month). The free plan exports to PDF only. Direct Google Classroom assignment integration is not currently available — teachers export to Google Docs and then upload or assign through Classroom manually.
