A side-by-side comparison of two AI tools that are often considered together but actually solve different problems. Kuraplan is a full-prep workflow tool with native NZ / AU / UK / US curriculum alignment. Diffit is purpose-built for adapting source texts into leveled reading passages. We verified every pricing and feature claim against the live product pages on 19 May 2026.
In one sentence: Kuraplan is the better fit when the job is planning a curriculum-aligned week; Diffit is the better fit when the job is taking a specific text and adapting it for diverse readers. A meaningful number of teachers use both, for different parts of the same week.
Feature-by-feature comparison
Every row verified against the live product pages on 19 May 2026.
Feature
Kuraplan
Diffit
Free tier
Free forever
21 classroom tools usable with no signup; AI generation requires a free account
Free forever (Basic)
"A limited number of ready-to-use, differentiated resources" with limited customization; account required for generation
Diffit for Schools is a flat-rate annual subscription tiered by enrolment; exact $ not publicly disclosed on the pricing page (verified May 2026)
AI lesson plan generator
Yes (native AI lesson planner)
Curriculum-aligned lesson plans in one click
Yes (lesson kits + substitute plans)
Generates mini lessons + guided notes + practice packs and substitute lesson plans (verified at web.diffit.me/resources)
Worksheets database (pre-built)
1,000+ printable worksheets in library
Generates on demand
Broad resource catalog (chemistry worksheets, math practice, decodable readers) but no browsable static worksheets library equivalent surfaced on diffit.me
Rubrics
Yes (free rubric generator)
Writing rubrics within activities
Diffit's writing-activity outputs include rubrics; no standalone rubric maker tool surfaced on its public pages
Text differentiation by reading level
Yes, when prompted
Kuraplan can generate scaffolded and extension versions of practice tasks, but reading-passage leveling from a source text is not its signature flow
Signature feature
Paste text, drop a URL, upload a PDF, or use a video transcript — Diffit's core flow is producing leveled reading passages with comprehension questions for differentiated classrooms
Curriculum support
NZ, AU v9, UK NC, US, CA, IE + NCEA
Native alignment across six curricula and NCEA achievement standards
US-centred standards alignment
Schools tier includes "standards & skills alignment" without naming NZ Curriculum, Australian Curriculum v9, UK National Curriculum or NCEA on its public pages
Output formats
PDF, web, slides, images
PDF (Free); Google Docs/Slides/Forms/Classroom + Microsoft (Schools)
Google and Microsoft export are explicitly Schools-tier features per pricing page
LMS / classroom integrations
Google Classroom, Google Workspace
Direct export; Canvas / Schoology not surfaced
Google Classroom, Google Workspace, Microsoft (Schools tier)
Google + Microsoft integration is gated to Diffit for Schools; not part of the free tier
ELL / translation support
Multilingual generation on request
Kuraplan can generate in or translate output to other languages on request; translation is not a first-class UI control
Explicit, first-class
Marketing leads with "Support English learners with scaffolds and translation" and Diffit Chat exposes translation as a direct adaptation control
Mobile access
Responsive web
Responsive web
Best for
NZ / AU / UK teachers; NCEA; teachers who want plan + worksheet + slides in one tool
US K–12 teachers who need to adapt a specific text (article, PDF, video transcript) to multiple reading levels for diverse classrooms
Where Kuraplan wins
Five specific advantages, each backed by what we verified on both products this week.
Native multi-curriculum (NZ, AU v9, UK, US, CA, IE) + NCEA
Kuraplan generates plans aligned to the New Zealand Curriculum, Australian Curriculum v9, UK National Curriculum, US Common Core, Canadian provincial curricula and Irish curriculum out of the box — plus NCEA achievement standards for NZ secondary. Diffit's pricing page describes "standards & skills alignment" in its Schools tier but does not name native alignment to NZ, AU v9, UK NC or NCEA (verified at web.diffit.me/pricing on 19 May 2026). For non-US teachers, that gap is meaningful.
Full prep workflow: plan + worksheet + slides + image in one pass
Kuraplan is built around a teacher's whole prep workflow — type the topic, pick the year level and curriculum, and the lesson plan, matching worksheet, slide deck and any supporting images come out together. Diffit's surface area is wider than "just reading" in 2026 — its resources catalog now includes lesson kits, station rotations, unit tests and substitute lesson plans — but its gravity is still around adapting a source text into leveled resources, not orchestrating an end-to-end weekly plan.
Browsable worksheets library (1,000+ printables)
Beyond on-demand generation, Kuraplan ships a library of 1,000+ printable worksheets across maths, reading and science. Diffit's free tier includes "a limited number of ready-to-use, differentiated resources" and a wider catalog inside the app, but does not publish a comparable browsable library on its public site for teachers who just want to skim, download and print.
Transparent personal pricing
Kuraplan publishes its prices openly: $9 / month for Pro, $99 / teacher / year for Schools. Diffit's pricing page describes Diffit for Schools as a "flat-rate annual subscription, tiered based on student enrolment" without a public dollar figure (verified May 2026). Individual teachers comparing budgets can act on Kuraplan's price the moment they read it; with Diffit they need to ask for a quote.
21 free classroom tools without an account
Kuraplan publishes 21 classroom utilities — random name picker, rubric generator, exit ticket generator, seating chart maker, word search maker, and more — that work in the browser with no signup. Student names and class data are stored locally on-device, not on Kuraplan's servers. Diffit requires an account to generate.
Where Diffit wins
Diffit is genuinely excellent at the job it was built for. Here are the places it outperforms Kuraplan today.
The clearest source-text-to-leveled-passage workflow on the market
Diffit's signature flow is unmatched: paste an article, drop a URL, upload a PDF, or use a video transcript, and you get a leveled reading passage with comprehension questions tuned for your classroom in seconds. If your weekly differentiation challenge is "this Tier 1 article is too dense for half my class," Diffit was built for exactly that problem and is widely considered the gold standard for it.
First-class English-learner support and translation
Diffit explicitly markets translation and ELL scaffolds as a primary feature — "Support English learners with scaffolds and translation" sits on its homepage. The translation control is exposed as a first-class adaptation, not a prompt-engineering exercise. Teachers in heavily multilingual classrooms reach for Diffit because of this.
Mature US school and district adoption
Diffit publicly lists adoption across named US districts including Hart, Arlington, Kenosha, Rockford, Forsyth County Schools and Rockingham, and reports the results of a 2,517-teacher survey directly on its site (96% "saves me time", 93% "reaches students where they are", 86% "makes me a better teacher"). For US schools looking for a deployed, trusted differentiation tool today, Diffit has a credible institutional track record.
Specialised resource catalog: phonics readers, science labs, station rotations
Diffit's resources catalog (verified at web.diffit.me/resources) includes decodable phonics readers, chemistry worksheets with equations, science labs with data-collection frameworks, station rotations, choice boards, document-based questions with primary sources, and project-based activities. For literacy specialists and middle-school science teachers, that depth of specialised templates is genuinely useful.
Pricing breakdown (May 2026)
Pricing verified on each product's public pricing page on 19 May 2026.
Tier
Kuraplan
Diffit
Free
$0 — AI lesson, unit and worksheet planners (with limits), the full 1,000+ worksheets library, plus 21 classroom tools that need no account at all.
$0 (Basic) — “A limited number of ready-to-use, differentiated resources” with limited customization, PDF download, and adapt by reading level or language.
Not publicly priced. Diffit does not publish a per-teacher dollar figure on its pricing page for paid access; individual teachers join via a school subscription or trial.
Schools / District
$99 / teacher / year (Schools). Admin dashboard, bulk licensing, custom AI training, custom slide branding, DPA, 30-day trial.
Quote-based. Diffit for Schools is a “flat-rate annual subscription, tiered based on student enrolment.” District licensing is also quote-based. Adds Google / Microsoft export, standards alignment, longer inputs, admin dashboard.
We deliberately do not invent a Diffit price. As of 19 May 2026, Diffit's pricing page does not publish a specific dollar figure for paid tiers — anything specific you see elsewhere is either out of date or quoted to a specific district.
The same job, both tools: when each wins
Because Kuraplan and Diffit are tuned for different jobs, comparing a single prompt is misleading. Here are two realistic jobs and how each tool handles them.
Job 1: plan a Year 5 maths lesson on fractions
Kuraplan generates a 45-minute lesson with timing breakdown, learning objective aligned to NZC Level 3 Number and Algebra (when you pick the NZ curriculum), differentiated scaffold + extension tasks, plus a matching worksheet and slide deck in one pass.
Diffit can produce multi-step math practice with worked solutions and a leveled reading passage explaining fractions, but it does not own the “plan + slides + worksheet in one go” flow. Kuraplan is the more natural fit here.
Job 2: adapt a dense news article for a mixed-reading class
Diffit is exactly this tool: paste the URL, get the article rewritten at multiple reading levels, with comprehension questions, vocabulary in context, and an optional translation for English learners — in seconds.
Kuraplan can produce scaffold and extension versions of a passage when prompted, but it does not have a dedicated “paste this article, level it” UI control. Diffit is the more natural fit here.
Honest assessment: The two tools are tuned for different jobs. We do not recommend choosing one solely on the basis of a head-to-head feature shootout; instead, pick the tool that matches the bottleneck in your week. A meaningful number of teachers use both — Kuraplan for weekly planning, Diffit for ad-hoc text adaptation.
User signals and adoption
We did not paraphrase unverified G2 / Capterra quotes for this comparison. Instead, here are the user-facing signals each product publishes directly.
Kuraplan, in its own numbers
“Trusted by 1,000+ schools.”
“Loved by 40,000+ teachers.”
1,000+ printable worksheets in the public library.
21 classroom tools open and free to use without an account.
Source: kuraplan.com homepage (verified 19 May 2026).
Diffit, in its own numbers
“Trusted by thousands of schools & districts.”
From a self-published 2,517-teacher survey: 96% “saves me time,” 93% “reaches students where they are,” 86% “makes me a better teacher.”
Named partner districts: Hart, Arlington, Kenosha, Rockford, Forsyth County Schools, Rockingham.
Source: web.diffit.me homepage (verified 19 May 2026). Survey figures are Diffit's own self-published data, not an independent study.
Switching to Kuraplan (or running both)
Because the two tools handle different jobs, “switching” is not always the right framing — many teachers run both. Here are the two paths most teachers take.
1
Replace Diffit fully if planning is your real bottleneck
Sign up at kuraplan.com/signup and pick your curriculum (NZ, AU v9, UK NC, US, CA, or IE). Re-run the lesson plans you actively use each week. You will get plan + worksheet + slides in one pass, with native standards alignment instead of generic differentiation.
2
Keep Diffit for source-text adaptation, add Kuraplan for the rest
Use Diffit when the job is “take this specific article or PDF and produce leveled passages.” Use Kuraplan when the job is “plan this week's lessons aligned to my curriculum, with worksheets and slides ready to go.” Both have free tiers, so you can run both without doubling spend.
3
Replace Diffit's no-account utilities with Kuraplan's free tools
If you also reach for quick utilities (rubric, exit ticket, name picker, word search) during the week, bookmark kuraplan.com/tools. They run in the browser with no account; student data stays on-device.
Try Kuraplan free — no credit card
Pick your curriculum, generate your next lesson, and see how the workflow feels in 60 seconds.
It depends on the job. Diffit is purpose-built for adapting a specific source text — an article, PDF, URL or video transcript — into a leveled reading passage with comprehension questions for differentiated classrooms. It is excellent at that. Kuraplan is built around the whole weekly prep workflow: pick a topic, pick a curriculum (NZ, AU v9, UK NC, US, CA, IE, or NCEA), and get a lesson plan, worksheet, slide deck and supporting images together. If your bottleneck is differentiating reading materials, Diffit. If your bottleneck is planning the week, Kuraplan. Some teachers use both.
Are Kuraplan and Diffit direct competitors?
Not really. They overlap, but the centre of gravity is different. Diffit's signature flow starts from a source text and produces leveled, scaffolded versions for diverse readers. Kuraplan's signature flow starts from a curriculum standard or topic and produces a lesson plan plus matching artefacts. For some teachers — particularly US secondary humanities — they answer different parts of the same week. We honestly recommend both tools to teachers who need both jobs done.
How much does Diffit cost in 2026?
As of May 2026 (verified at web.diffit.me/pricing): the Basic tier is free with "a limited number of ready-to-use, differentiated resources" and limited customization. Diffit for Schools is described as a "flat-rate annual subscription, tiered based on student enrolment" — exact dollar amounts are not published on the public pricing page, so individual teachers and small schools need to request a quote. District licensing is also quote-based.
Does Diffit support the NZ, Australian or UK curricula?
Diffit's pricing page describes "standards & skills alignment" within its Schools tier but does not name native alignment to the New Zealand Curriculum, Australian Curriculum v9, UK National Curriculum or NCEA achievement standards (verified May 2026). Diffit's examples and resource catalog are anchored in US classroom contexts. Teachers in NZ, AU and UK can still use Diffit for source-text adaptation, but for standards-aligned planning Kuraplan is purpose-built for those curricula.
Is Kuraplan a good Diffit alternative?
It's a good complement and, for some teachers, a full replacement. If your reason for using Diffit is differentiating a source text for diverse readers, Kuraplan can also produce scaffolded and extension materials but Diffit's leveled-passage workflow is more polished. If your reason for using Diffit is generating lesson kits, unit tests, station rotations or substitute plans — and especially if you teach a non-US curriculum — Kuraplan covers that workflow with native curriculum alignment, a 1,000+ worksheets library and transparent $9 / month pricing.
Can I use Diffit free, or do I need to pay?
Diffit's Basic tier is free and offers limited ready-to-use differentiated resources, PDF download and adaptation by reading level or language. Customization is limited on the free tier, and Google / Microsoft export plus advanced features sit behind Diffit for Schools (quote-based). For Kuraplan, the free tier includes the AI lesson planner, AI unit planner and AI worksheet planner (with usage limits), plus 1,000+ public worksheets and the library — no credit card required.
Which is better for first-year teachers?
Honestly, it depends on subject. Primary and secondary teachers who plan a lot of original lessons each week tend to get more leverage from Kuraplan's all-in-one workflow (plan + worksheet + slides in one go). Secondary humanities teachers who frequently adapt existing texts (news articles, primary sources, novels) for diverse readers tend to get more leverage from Diffit's source-text flow. For the first few months of teaching, the bigger win is usually "can I get a presentable lesson plan in 60 seconds?" — and that is Kuraplan's home turf.
Do either tool integrate with Google Classroom?
Yes — both do. Diffit exposes Google Docs, Slides, Forms and Classroom export plus Microsoft export, but those integrations are gated to Diffit for Schools (the paid tier) rather than the free Basic tier. Kuraplan exports to Google Classroom and Google Workspace from any tier.
About this comparison
This comparison is editorially independent. Kuraplan is our product. We are not paid by Diffit or any competitor mentioned. We have not received review units or affiliate commissions. Diffit is an excellent tool at what it is built for — leveled text-to-classroom-resource adaptation — and we have tried to give it credit explicitly where it outperforms us. Ratings reflect our genuine assessment based on free-tier testing on 19 May 2026.
Last verified: 19 May 2026. Pricing accuracy: confirmed against web.diffit.me/pricing and kuraplan.com/pricing on 19 May 2026. Diffit's Schools tier dollar figure is not published; we have not invented one.