TeacherHero
Comparison · verified 2026-07-26

TeacherHero vs Diffit

Diffit takes a text, topic or link and returns leveled, ready-to-use student resources — adapted passages, questions, organizers, activities. TeacherHero plans the unit those resources belong to, generating each day as six phases with the rest of the unit in context. Diffit makes the material; TeacherHero decides what the week is for.

Plan your first lesson — free See real output first

What Diffit is

Diffit's premise is text in, materials out. Give it a topic, an article, a link, or a passage from a novel, and it returns a version adapted to the reading level and language you need, with comprehension questions, vocabulary, organizers and activities attached. Their app advertises a wide range of output shapes — reading passages, exit tickets, station rotations, choice boards, sub plans, unit tests with answer keys, and multi-day lesson sequences. There is a free Basic tier, a paid individual teacher subscription, and a school licence priced by enrolment. It is the strongest product in this category at the specific job of making one piece of text usable by every reader in a mixed classroom.

Diffit pricing

Basic

Free — ready-to-use content with limited customization

web.diffit.me · verified · archived copy

Individual teacher subscription

$14.99 per month billed monthly, or $149.99 per year billed annually

web.diffit.me · verified · archived copy

Diffit for Schools

Not publicly listed — a flat-rate annual subscription tiered by student enrolment, quoted per school

web.diffit.me · verified · archived copy

First-year teachers

Free premium access through June 30th, 2027

web.diffit.me · verified · archived copy

TeacherHero is free. There is no paid tier, no trial clock, and no billing — which is worth reading as a stage of the company, not a discount.

The differences that actually decide it

Material versus plan

Diffit's unit of work is the resource. You bring a text or a topic and it returns something you can hand to students today, adapted to the readers in front of you. That is a genuinely hard problem, and Diffit solves it about as cleanly as it can be solved.

TeacherHero's unit of work is the day, inside the unit. It starts from what students will produce by the end of the lesson and works backwards through six phases, and each phase's materials are generated as part of that day rather than sourced separately.

The distinction matters most when you are the one deciding what the week is. If a pacing guide already tells you that Tuesday is photosynthesis, Diffit will make Tuesday's material better and faster than we will. If Tuesday is undecided, a resource generator cannot decide it for you.

Diffit does generate multi-day sequences — with one difference

Worth being accurate about, because it is the closest overlap between the two products: Diffit's own app lists a multi-day lesson sequence, with slides, activities and assessment, among the things it can produce. So “Diffit only does single resources” would be wrong.

The difference is what happens after it is produced. A generated sequence is an artifact: it is complete at the moment it is made, and the next thing you generate does not know it exists. In TeacherHero the course, unit and week are rows that persist, so day six is generated with days one to five in context, editing day two marks the unit's assessment as stale until you re-approve it, and adding a source at the week level puts it in front of every day in that week.

That is the entire architectural difference, and it is worth understanding before choosing, because it is invisible in a side-by-side of two output samples. Both will look good. Only one of them will still be reading your unit next Tuesday.

Reading levels, in both

Diffit's leveling is the product: adapt by reading level or language, at the moment of generation, on any text you bring.

TeacherHero's version is narrower and shaped differently. You generate a support version of a lesson section for one of six named groups — multilingual learners, developing readers, writing support, organization and focus, specially designed instruction, or advanced extension — and it is derived from the section you already built, aimed at the same learning target, and printable as its own packet so it does not announce itself across the room.

If leveling one text for five readers is the job, Diffit is the better tool for it. If the job is that the students who need support should still be working toward the same target as everyone else on day seven of a unit, the support version being generated from the lesson is the part that matters.

Side by side

The Diffit column reflects what Diffit publishes about its own product, on the pages cited above, as of . “Not stated” means we could not verify it either way — not that the feature is missing.
CapabilityTeacherHeroDiffit
Course, unit, week and lesson kept as one structureYesNo
Each lesson generated with the rest of the unit in contextYesNo
One class period planned as six gradual-release phasesYesPartial
End-of-unit assessment built from the unit's own lessonsYesPartial
Generates from a document you uploadYesYes
Free-form chat to revise what was generatedPartialYes
Student packet and answer key as separate documentsYesYes
Tools students sign in to and use directlyNoNot stated
District admin dashboard, SSO and rosteringNoPartial
Signed district data privacy agreementNoNot stated

Rows are here because a teacher choosing between the two would decide differently based on them. Counts of tools and integrations are deliberately absent: nobody picks a lesson planner on a tool count, and a row we would lose for being young is not a row that helps you.

Choose Diffit if…

  • The problem you are solving is one text and five reading levels. Diffit is built precisely for that, does it faster than anything else here, and TeacherHero's leveling is a feature of a lesson rather than the product's whole purpose.
  • You want ready-to-use material in under a minute without setting up a course, a unit and a week first. TeacherHero asks for that structure before it will generate, which is the right trade for a unit and the wrong one for Tuesday's emergency.
  • You teach from an adopted curriculum that already tells you what each day is, and what you need is supplementary material for it rather than a plan.
  • You are in your first year of teaching: Diffit's own site offers first-year teachers free premium access through June 30th, 2027, which is a materially better deal than paying for anything.

Choose TeacherHero if…

  • Nobody has told you what the ten days are, and deciding that — then keeping every day pointed at it — is the actual work.
  • You want each day planned as six gradual-release phases with the materials attached to the phases, rather than a strong resource you then have to build a day around.
  • You want the vocabulary you introduced on Monday to still be in the prompt on Thursday, without pasting it in again.
  • You want an end-of-unit assessment written from the lessons you taught, after approving a coverage blueprint, rather than a unit test generated from a topic.

Comparing against a chatbot or a template pack rather than a product? That is a different question, and it has its own answer: AI lesson planning versus templates.

Frequently asked questions

How much does Diffit cost?

Diffit's Basic tier is free. An individual teacher subscription is listed on their site at $14.99 per month billed monthly, or $149.99 per year billed annually. Diffit for Schools is a flat-rate annual subscription tiered by enrolment and quoted per school. TeacherHero is free with no paid tier.

Is Diffit free for first-year teachers?

Yes. Diffit's own first-year teacher page offers full premium access through June 30th, 2027 to teachers in their first year, applied for with a form. If that is you, it is the best offer in this comparison and worth taking regardless of what else you use.

What is the difference between TeacherHero and Diffit?

Diffit turns a text or topic into ready-to-use leveled materials. TeacherHero plans the unit those materials belong to, generating each day as six phases with the rest of the unit in context. Diffit makes the material; TeacherHero decides what the week is building toward.

Can TeacherHero adapt a text to different reading levels?

Yes, but shaped differently. You generate a support version of a lesson section for one of six named groups, derived from the section you already built and aimed at the same learning target. Diffit's leveling is faster and more flexible on an arbitrary text; ours is tied to the lesson.

Can I use both Diffit and TeacherHero?

Yes, and for some teachers that is the sensible answer. Plan the unit in TeacherHero, and when you need one article leveled for five readers, use the tool built for that. Any document you generate elsewhere can be uploaded to TeacherHero as a source and used in a lesson.

Diffit is a trademark of their respective owners. TeacherHero is not affiliated with, endorsed by, or sponsored by Diffit. Everything stated here reflects what each company publishes about its own product on the pages cited above, on the dates shown; features and pricing change, so check their site before deciding.

Last verified . No competitor logos or branding appear on this page, and no outcome statistics from any company’s marketing — theirs or ours — are repeated here.

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