Diffit review

Diffit is a web tool for a common classroom problem. A class reads at many different levels, and the textbook is written for one of them. You type a topic or paste in material you already use, choose a level and language, and Diffit produces a reading passage with vocabulary, questions and activities to go with it. You can then generate the same content at another level, so a whole class works on the same topic with texts they can read. It is built for K-12 teachers, especially those supporting English learners, special education and intervention groups.

Who it’s for

Diffit suits any teacher who regularly rewrites texts by hand. A Year 8 geography teacher with three students new to English and a handful reading well above age can make three versions of the same passage on river erosion before the lesson. Learning support staff and EAL teachers will probably use it more than anyone else in the building.

Teachers who want help with marking, feedback or lesson planning across the board should look at MagicSchool or Brisk Teaching. Diffit does not try to do those jobs.

What it does well

It is quick and it stays focused. You choose a challenge level, a language and optional settings such as MTSS tier, scaffolds and standards, then pick the type of resource. Diffit’s site lists differentiated activities, station rotations, sub plans, intervention materials and slides. The output comes in a print-ready layout, which matters on a busy morning when you need something on paper by period two.

Levelling keeps the class together. Students reading at different levels can still discuss the same ideas, answer questions on the same topic and share what they found. That works better for most classes than giving struggling readers a different topic altogether.

The editing tools let you adjust a resource after it is made. You can add scaffolds, simplify a section or extend it for students who finish early, without starting again. This saves the cut-and-paste work of building a second worksheet.

Diffit has no student logins and no student-facing AI. Students only ever see the printed or exported resource. For a school that is cautious about putting AI in front of children, this makes Diffit one of the easiest AI tools to approve.

Where it falls short

A levelled text is a rewrite, and rewrites lose things. When an AI simplifies a passage on the causes of the First World War, it can drop a cause, merge two events or state a debated point as fact. Read every passage before you print it, and check facts and numbers against your source. Lower-level versions need the closest read, because the cuts are biggest there.

Questions vary in quality. Many are recall questions, and some have answers that the passage does not quite support. Expect to edit or replace a few in each set.

The free plan is limited in ways you will notice. Diffit’s plans page says free users can access content made in the last 90 days, and exports to Google Docs, Slides, Forms, Classroom and Microsoft need a paid plan. If you want to build a bank of resources for next year, you will need premium or a school licence.

A levelled text can also become a permanent crutch. Use it to get a student into the content, then plan how they will move up to the original.

Pricing

Diffit’s individual teacher page, checked in November 2026, lists premium at $14.99 per month billed monthly or $149.99 per year billed annually. It says these are prices for US customers and may vary by country, and individual plans can only be bought by credit card. Premium adds exports to Google and Microsoft formats, alignment to standards and MTSS tiers, full resource history, ready-made graphic organizers such as Cornell Notes, and more customisation. The free Basic plan lets you create, edit, print and download resources as PDFs. Diffit for Schools is a flat-rate annual subscription tiered by student enrolment, priced by quote, and adds an admin dashboard and training.

Privacy and data

Diffit’s privacy page says “We do not collect ANY student data,” and that it only collects teacher names, email addresses and IP addresses to provide the service. Because students never log in, there is no age limit for students to think about, and the main risk is what teachers paste in. Do not paste student work with names attached or notes about individual students.

Diffit says it is FERPA and COPPA compliant, has signed the National Data Privacy Agreement, has a “Pass” rating from Common Sense Media and encrypts data in transit and at rest. It says it will never sell your data or use it to advertise third-party products. Its privacy page does not say whether the text you enter is used to train AI models, so ask Diffit directly if your AI policy requires an answer.

Verdict

Diffit does one job well, and it is the quickest way to give a mixed class the same content at different reading levels. Its no-student-data design makes it easy to approve. Teachers who want a broader AI assistant, or who will not pay for an export-capable plan, will get more from MagicSchool’s free tier.

See the best Diffit alternatives