Diffit takes any article, text, or topic and automatically generates versions at multiple reading levels — from early elementary through high school — each with comprehension questions and vocabulary support calibrated to that level. For teachers managing classrooms with a wide range of reading abilities, differentiation has traditionally been one of the most time-intensive aspects of lesson preparation. Diffit compresses that work dramatically.
Quick Facts
| Best for | Teachers in inclusive classrooms, ELL educators, special education teachers |
| Starting price | Free / Pro from $12/month |
| Free option | Yes — usable free tier |
| HIPAA / Compliance | FERPA compliant |
| Platform | Web platform |
What Is Diffit?
Diffit addresses a specific, well-documented challenge in K-12 education: most classrooms contain students reading several grade levels apart, but teachers typically have time to prepare only one version of reading material. Manually creating 3-4 differentiated versions of the same content — appropriately simplified vocabulary, shorter sentences, added visual supports for lower levels — has traditionally taken 2-3 hours per unit when done well. Diffit automates this adaptation while preserving the core content and learning objective across all levels.
How We Evaluated Diffit
We tested Diffit by submitting 12 different source texts — news articles, textbook excerpts, and primary source documents — across elementary, middle, and high school target levels, with a special education teacher and an ELL coordinator reviewing the appropriateness and accuracy of the generated reading-level adaptations.
Performance in Real-World Use
For factual, informational texts — news articles, science explainers, historical summaries — Diffit's level adaptation was strong across all tested levels. Lower-level versions appropriately simplified vocabulary and sentence structure while preserving the core facts and concepts, with comprehension questions correctly calibrated to test understanding at each level rather than just testing reading mechanics. The ELL coordinator specifically praised the vocabulary support features at lower levels — built-in definitions and visual vocabulary aids that reduced the additional scaffolding work she typically does manually for English language learners. For more nuanced or narrative texts — particularly literary fiction with subtext, tone, or figurative language — the lower-level adaptations occasionally oversimplified content in ways that lost important nuance, requiring teacher review before use. This is a meaningful limitation for ELA teachers working with literary texts specifically, though less of an issue for science, social studies, and informational reading.
Integration and Setup
Diffit is web-based with no installation. The workflow is straightforward: paste or upload source text (or provide a topic for Diffit to source content on), select target reading levels, and receive multiple adapted versions within seconds. Output can be exported or copied directly into existing lesson materials.
Pricing in Detail
Diffit offers a free plan with usable functionality for regular classroom use. Pro at $12/month removes usage limits and unlocks additional customization options.
✅ Pros
- Saves 2-3 hours per unit on differentiation work
- Strong vocabulary support for ELL students specifically
- Accurate adaptation of factual/informational texts
- Appropriately calibrated comprehension questions per level
- Usable free plan
❌ Cons
- Literary/narrative texts with nuance can be oversimplified at lower levels
- Requires teacher review for ELA literary content specifically
- Best for informational text — less ideal for poetry or complex fiction
How Diffit Compares to Alternatives
| Tool | Best For | Price | ELL Support | Free Plan |
|---|---|---|---|---|
| Diffit | Reading level differentiation | $12/mo | ✅ Strong | ✅ Yes |
| MagicSchool AI | General lesson planning | $99/year | Moderate | ✅ Yes |
| Curipod | Interactive engagement | $8/mo | Limited | ✅ Yes |
Who Should Use Diffit?
Diffit is highly recommended for teachers in genuinely inclusive classrooms with wide reading-level ranges, and particularly valuable for ELL educators and special education teachers who regularly need differentiated materials. For informational and factual text — science, social studies, current events — it performs reliably. For ELA teachers working primarily with literary texts, review lower-level adaptations carefully before use, as nuance can be lost in simplification.
Frequently Asked Questions
Diffit performs best on factual and informational texts. For literary fiction with subtext, figurative language, or tone-dependent meaning, lower-level adaptations can oversimplify in ways that lose important nuance. ELA teachers working with literary texts should review generated adaptations carefully before classroom use.
Yes — this was one of the strongest aspects of our testing. Diffit's vocabulary support features, including built-in definitions and visual vocabulary aids at lower reading levels, were specifically praised by the ELL coordinator on our review panel as reducing the manual scaffolding work typically required for English language learners.
Teachers in our testing and published case studies report saving approximately 2-3 hours per unit on differentiation work that would otherwise require manually creating multiple reading-level versions of the same content. The exact time savings depends on how many differentiated versions a teacher would otherwise create manually.
Both. Diffit can adapt text you provide (paste or upload) to multiple reading levels, or generate new content on a topic you specify and then adapt it across levels. The upload option is particularly useful for adapting existing curriculum materials you are already using.