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Diffit: reviews and analysis
Adapts texts, activities and materials to different levels with AI for teachers.
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Our verdict
Diffit is the most specific tool for adapting one source to groups at different levels. It saves production time, but teachers must check accuracy and curriculum fit before distribution.
Best for: Teachers preparing the same content for different reading levels.
What changed this week
Sweep of
No axis movement: the $14.99 price is confirmed literally on the official site. Two new themes are added, each confirmed by two independent sources (varied input formats, need for teacher review and reading-only scope), but they are nuances of already-known behaviour, not facts that changed the product.
We have tracked it since August 1, 2026: 2 sweeps on record. We publish the latest change here; the full series is not published.
What the internet says
Diffit still solves a concrete teaching job well, adapting a text by level and language, and this second pass's independent reviews confirm that read: it takes text, a URL, a PDF or a video as input and saves prep time. The individual price stays at $14.99 per month or $149.99 per year, and the same reviews keep flagging that generated content needs review before class and that the tool does not cover full lesson planning or less text-based subjects.
What the web repeats in favour
- Differentiates material by level and language and lets teachers edit, print or reuse the result
- Accepts several input formats, pasted text, URL, PDF or video transcript, without needing to copy and paste the text
What the web repeats against
- Exports, standards, organisers and full history require an individual or institutional licence
- AI generated content needs teacher review before it goes to class, according to several independent reviews
- It is a reading differentiation tool, not a full lesson planner, and works less well for less text-based subjects like maths or PE
Sweep sources: Official pricing · Official pricing · Review sites · Review sites
Pros / Cons
Pros
- Level adaptation
- Starts from a source
- Useful free plan
Cons
- Needs teacher review
- Does not manage the whole class
- $14.99 individual plan
TLDR: Diffit takes a text or a topic and returns the same content at several reading levels, with vocabulary and questions already built, so a mixed class can work on one thing without losing anyone. The free Basic plan adjusts level, length and language and downloads to PDF, but it only reaches what you made in the last 90 days. The individual subscription starts at $14.99 per month and is what opens up exporting to Google and Microsoft.
What Diffit is and how it works
Diffit answers a very specific problem in compulsory education: the handout is written for an average reader who is sitting in none of the chairs, and the classic fix, rewriting the same text several times over, is work almost nobody has the hours for.
The mechanism is direct. You give it a starting point, either the topic you are teaching or material you already use, and it returns a classroom-ready resource. The official home page describes the output as activities, station rotations, sub plans, intervention materials and slides, and the free tier states ready-to-use content with questions and vocabulary included. The part that gives the tool its name is the adjustment: reading level, length and language change on the same resource, so the versions are one lesson served at different heights.
On top of that sits a chat layer. According to the documentation, Diffit Chat opens from any resource you have already made and takes the request in your own words: adjust the activity, add structured supports, build a plan for a substitute, or connect a hard concept to something in the real world. Living inside the resource, it skips the briefing a general chatbot would need.
Worth fixing the scope so you do not buy the wrong thing. Diffit produces material. It does not take a register, collect answers or hold the grades. Where each piece of the job sits is mapped in the AI in the classroom hub.
What using it is like day to day
The route the official site lays out has three steps. You start from the topic or the material you already teach, and that is where level, language and scaffolds get set. The site offers standards at that same starting point, but it is worth knowing upfront that alignment to standards is one of the features the paid subscription adds. You shape the resource with the editing tools. Then you print, export or share it with a colleague. Diffit Chat is a separate layer that opens on a resource you have already made, so it arrives once the material exists and serves to adjust it.
The material comes from a model and has to be read before it is handed out. A misremembered historical fact, a nuance lost in simplification, an example that does not match your curriculum, all of these slip through quietly, and in a text adapted to a lower level the risk is higher precisely because simplifying is the job. Teacher review is the step that turns a draft into classroom material, and the time saved has to be counted after it.
One question settles school purchases and rarely appears in comparisons: what happens to student data. It goes in Diffit’s favour here. The home page states zero student data collected, and the privacy policy spells it out, saying it collects only teacher names, email addresses and IP addresses. That is the most comfortable answer a tool can give when somebody in the September meeting asks what happens to minors’ data, though the certifications it displays are US instruments and a school elsewhere will have to weigh them against its own rules.
What this review states about how the product works, what the plans hold and how privacy is handled comes from five of Diffit’s own pages: chat, individual subscription, plans, privacy and the home page. They describe the product the company wants to show, so they should be read as such. The judgements about when it pays off and who it fails are ours.
Price and plans
The model is freemium. The Basic plan costs nothing and gives more than a free tier usually does: content with questions and vocabulary, adjustment by reading level, length and language, and PDF download for printing or sharing with a colleague. And a download is yours to keep, so the archive you build on your own computer does not depend on the account.
The individual subscription starts at $14.99 per month, and what it mostly buys is an exit from the PDF. It adds export to Google Docs, Slides, Forms and Classroom or to Microsoft, alignment to standards, skills and depth of knowledge levels, conversion of content into graphic organisers and activities, advanced customisation controls, and the ability to work with long inputs including novels and chapter books. Schools buy a flat annual rate tiered by student enrolment, with an admin dashboard and dedicated support.
The limit that bites hardest on the free plan sits in the archive: Basic only gives access to content made in the last 90 days. An October resource stops being reachable inside the tool by mid-January. Mind the detail when comparing plans: the tier that restores access to everything you have ever created is the school licence, because the individual subscription page lists what it adds and the full archive is not on that list. If your way of working is a library that grows every year, that detail settles the purchase more than the Google export does.
Who it is for (and who it is not for)
It fits primary and secondary teachers delivering the same content to groups with widely separated reading levels, anyone teaching students learning in an additional language, and anyone building intervention or catch-up material from texts they already have. It also fits the person covering someone else’s class who needs something defensible with no preparation time.
It is not for running the classroom: it collects no answers and tracks no progress, and anyone who needs that should look at Formative, built for the assign, mark and track cycle. It is also not the answer if your problem is the general paperwork of the job, from schemes of work to the difficult email home, since a catalogue like MagicSchool covers more separate chores. And if you want the class participating live, Wayground covers that. One logistical note: it runs in the browser only, with no mobile app.
Alternatives to Diffit
The closest comparison is MagicSchool, which also generates teaching material and adapts texts by level, but spreads the work across dozens of small tools instead of concentrating on one job. Pick Diffit when most of your problem is differentiation from a source, and MagicSchool when you need many different administrative chores covered by one subscription. Curipod starts from a topic and ends in an interactive lesson, so it solves the hour in the room and leaves the handout where it was. Formative and Wayground work on the next step of the job, collecting what students answer, and plenty of schools end up with one of each. And Quizgecko keeps the source-to-quiz part without the level adaptation.
Frequently Asked Questions
Is the free Diffit plan usable for real work?
Yes, with two conditions. You can adjust level, length and language and download to PDF, which covers paper use, but you cannot export to Google or Microsoft and you only reach what was made in the last 90 days.
What does the full version cost?
The individual subscription starts at $14.99 per month, and the official site also offers a cheaper annual option. Schools buy a flat annual rate tiered by student enrolment, quoted separately.
Can I start from my own text or only from a topic?
Both. The official site states you can start from the topic you are teaching or from materials you already use, and the individual subscription raises the input size to cover novels and chapter books.
Can it be used with under-age students?
The home page states zero student data collected and the privacy policy says it collects only teacher names, email addresses and IP addresses. Students work on the material you hand out, on paper or through your own platform. The certifications the company displays are US ones, so a school outside the United States should weigh them against its own rules.
Does Diffit manage the class or mark work?
It does neither. It produces material ready to hand out, and the cycle of assigning, collecting answers and tracking progress falls outside its scope.