Pricing at a glance
Free
$0
Any teacher; all students
Full library, unlimited assignments, data
PLUS
$95 / teacher / year
Individual teachers
Videos, tests, solution controls, custom problems
INTEGRAL
$145 / teacher / year
Teachers needing LMS sync or printing
Adds Canvas/Schoology, PDF export, work upload
Licenses are sold per school year and do not auto-renew. Refunds are available within 30 days of purchase. Families use a separate product, DeltaMath for Home, at $9.95/month or $95/year.
School and district licenses (national list, grades 4–12 enrollment)
| Enrollment | PLUS | INTEGRAL |
|---|---|---|
| Up to 750 students | $1,100 | $2,200 |
| 751 – 1,500 | $2,200 | $4,400 |
| 1,501 – 2,250 | $3,600 | $7,200 |
| 2,251 – 3,000 | $5,000 | $10,000 |
| More than 3,000 | $7,500 | $15,000 |
Site licenses cover every teacher in the building. Clever and ClassLink integration is only available with a site-wide INTEGRAL license, not individual INTEGRAL accounts.
Feature comparison
| Feature | Free | PLUS | INTEGRAL |
|---|---|---|---|
| Full skill library (2,500+ skills) | Yes | Yes | Yes |
| Unlimited assignments, auto-grading | Yes | Yes | Yes |
| Student data: attempts, accuracy, time | Yes | Yes | Yes |
| Google Classroom integration | Yes | Yes | Yes |
| Help videos per skill | — | Yes | Yes |
| Solutions Shown controls (yes / incorrect / correct / no) | — | Yes | Yes |
| Create and assign tests, timed assessments | — | Yes | Yes |
| Test Corrections mode | — | Yes | Yes |
| Assign specific problem sub-types | — | Yes | Yes |
| Create your own problems | — | Yes | Yes |
| State standards alignment (50 states + Canada) | — | Yes | Yes |
| Print assignments and tests to PDF | — | — | Yes |
| Student work / notes upload | — | — | Yes |
| Canvas and Schoology integration | — | — | Yes |
| Clever and ClassLink (site license only) | — | — | Yes |
| Standards-based performance reports | — | — | Yes |
| Admin portal, bulk data download | — | — | Yes (site) |
Strengths
- The free tier is genuinely usable. The whole skill library, unlimited assignments, and the full data view cost nothing, which is why adoption spread teacher to teacher.
- Randomization. About 100 variants per skill with fresh numbers make copying a classmate's work pointless and let students retry a skill indefinitely.
- Fine-grained assignment controls. Required count, penalty, max problems, due date, late credit, and (on PLUS) when solutions appear, all per skill.
- Immediate, specific feedback. Show Example before, Show Solution after; the solution is for the exact problem, not a generic one.
- Depth in high school algebra. Coverage from Pre-Algebra through Calculus is broad, with sub-types that let a teacher assign exactly the case a class is missing.
Limitations
- Strict formatting. Correct answers typed in an unexpected form are marked wrong; the answers page lists the rules students learn the hard way.
- Videos are paywalled. Free-tier students get examples and solutions but not the instructional videos.
- Not adaptive. DeltaMath does not diagnose and place students; the teacher chooses skills. Compare IXL or a screener such as Delta Math RTI for that.
- Interface density. The teacher dashboard is functional rather than polished, and new teachers report a learning curve in the assignment builder.
- Penalty frustration. Penalized skills can feel punitive to students who make arithmetic slips; teachers can set penalty to 0 but often leave the default.
Who it suits
| If you are… | Verdict |
|---|---|
| A middle or high school math teacher wanting auto-graded practice | Start free. Upgrade to PLUS if you want videos and solution timing control. |
| A department using Canvas or Schoology gradebooks | INTEGRAL, ideally as a site license so Clever/ClassLink rostering is included. |
| A student assigned DeltaMath | Free. Use Show Example first and read solutions for format; see the skill guides. |
| A parent or homeschooler without a teacher account | DeltaMath for Home, after the 7-day trial, if the learner is comfortable with independent practice. |
| An elementary teacher | Coverage exists but is thinner; evaluate the specific skills you need before committing. |