September 27, 2026 · AxonCPT Team · CPT, ADHD assessment, clinical practice

Free CPT Test for Clinicians: Objective ADHD Test Options

A free CPT test for clinicians exists in three forms: a vendor’s free allowance of normed tests, a limited free trial or practice credits, or open-source research software you run yourself. On the vendor websites we reviewed on September 27, 2026, AxonCPT listed 2 free tests every month with no card required; MOXO lists 2 free practice assessments when you open an account; BrainTrain and Creyos offer free trials; and T.O.V.A., QbCheck, and Conners CPT 3 Online didn’t list a free option. Open-source tools such as PEBL are free but lack the clinical norms and reports of commercial tests. This guide explains each route, with sources, so you can pick one that fits. It’s written for clinicians; if you’re a patient looking for a free ADHD test, talk with your clinician.

Clinician typing on a keyboard with a stethoscope on the desk, looking for a free CPT test for clinicians Photo by Vitaly Gariev on Unsplash

Disclosure: AxonCPT publishes this article and makes one of the products described. Vendor terms are from each vendor’s own website, accessed September 27, 2026, and may change. Confirm current terms with the vendor.

Why clinicians look for a free objective ADHD test

A continuous performance test (CPT) gives you an objective measure of sustained attention and impulse control to set alongside the interview and rating scales. (If you’re new to CPTs, start with what a continuous performance test is.) Rating scales are free or low-cost and quick, but they’re subjective; see rating scales vs. objective testing for how the two complement each other.

Clinicians usually want a free option for one of three reasons:

  • To try a platform before paying. Most commercial CPTs involve prepaid credits, hardware, or licenses.
  • Low volume. A solo PMHNP who tests a few patients a month may not justify a system purchase.
  • No reimbursement. If you can’t bill testing codes with your payers, every test is overhead.

Vendors with a free allowance or trial

Vendor / product Free option (per vendor website, accessed Sept 27, 2026) Terms to know Paid pricing after that
AxonCPT “Two free tests every month. Auto-refills on the 1st.” No card required Remote, patient completes on phone, tablet, or desktop browser; no app or login $49 for 5, $149 for 20, or $79/month unlimited (axoncpt.com)
MOXO “Opening an account is free”; “You’ll receive 2 free assessments to practice and gain experience” Free training session recommended Not publicly listed (MOXO getting started, FAQ)
IVA-2 (BrainTrain) “Try the Test FREE!” trial by request Trial time is limited; BrainTrain asks you to review the software within two weeks of download. Level B qualification required for purchase Kits from $975 (trial, price list)
Creyos “A personalized demo and free trial” Terms not detailed on the page reviewed Not publicly listed on vendor pages reviewed (Creyos)
T.O.V.A. 9 No free option found The $1,095 system includes 5 test credits $15 per credit (TOVA store)
QbCheck (Qbtech) No free option found on Qbtech pages reviewed Credits invoiced upfront, valid 12 months From $68 per test (Qbtech)
Conners CPT 3 Online (MHS) No free option found Minimum purchase of 15 uses; Progress Reports don’t consume a use $10 per use (MHS)

“No free option found” means we didn’t see one on the vendor pages we reviewed, not that the vendor never offers one. Ask sales about trials or demo accounts.

What’s different about a recurring allowance. A trial or practice credits let you evaluate the software. A monthly allowance lets a low-volume practice keep using objective data without a purchase. Of the vendor websites we reviewed, AxonCPT’s was the only one listing a free allowance that refills every month. At 2 tests a month, that’s up to 24 tests a year at $0; beyond that, paid packs or the unlimited plan apply.

Try it with your next patient. AxonCPT gives you 2 free tests every month — no card required. Send a link, your patient finishes in ~16 minutes from home, and you get a norm-referenced report instantly. Create your free account →

Open-source CPTs: free, but not a clinical product

The Psychology Experiment Building Language (PEBL) is free, open-source software licensed under the GPL. It runs on Windows, Linux, and macOS or in a browser, and its test battery includes a continuous performance task (the PCPT) [1]. PEBL describes itself as software for creating psychology experiments; it isn’t marketed as a clinical assessment.

What the research says:

  • In 44 young adults who took both the Conners CPT and the PEBL CPT, scores correlated moderately to highly: r = 0.78 for reaction time, 0.65 for omission errors, and 0.66 for commission errors [2]. The authors also noted that implementation details can matter for computerized tests.
  • A 2023 study of PEBL attention tasks found that response-time scores showed adequate test-retest reliability, while accuracy, variability, and deterioration-over-time scores did not, and it observed practice effects on the CPT [3].

For clinical use, the practical gaps are:

  • No clinical normative comparison or report. You get raw scores, not age- and sex-referenced results you can put in a chart note or share with a patient.
  • You set it up and run it. Installation, administration, data handling, and privacy safeguards are your responsibility.
  • Limited defensibility. A raw research-task score is harder to document as part of an evaluation or a titration decision than a normed report.

Open-source tasks are valuable for research and teaching. For patient care, most clinicians will want a normed instrument.

What “free” doesn’t cover

Whichever free route you use, some costs remain:

  • Your time. Sending, supervising (if required), reviewing, and documenting each test.
  • Environment. Remote tests need a quiet, standardized setup. See remote CPT testing validity for environment controls.
  • Interpretation. A CPT doesn’t diagnose ADHD. A 2024 systematic review concluded CPTs “should not be used in isolation as a diagnostic test” in adults but may help within a comprehensive assessment [4].
  • Billing. A free test isn’t automatically billable, and a billable test isn’t automatically covered. Check codes and payer rules before charging for any test.

When another option may fit better

A free allowance suits low-volume and trial use. Another product may be a better fit if:

  • You test many patients every month. Past the free allowance, compare per-test and subscription pricing across vendors in our guide to what objective ADHD testing costs clinicians.
  • You evaluate young children. T.O.V.A. offers a visual test for ages 4 to 5.5 and MHS offers K-CPT 2 for ages 4 to 7.
  • You need auditory testing (T.O.V.A., IVA-2) or motion tracking (QbCheck, QbTest).
  • You need an FDA 510(k)-cleared device for institutional or payer reasons. FDA’s database lists QbCheck, QbTest, and T.O.V.A.; AxonCPT is not marketed as an FDA-cleared device.
  • You already own a system or license, which may make your marginal cost per test low.

How this looks in practice

  1. Create a free account and review the sample output first. See what an AxonCPT report looks like.
  2. Pick one patient where objective data would change your next step, such as a new adult evaluation or a dose change.
  3. Send the test link. The patient completes the ~16-minute test at home on a phone, tablet, or computer with no app or login.
  4. Review the report with the interview and rating scales, and document how it informed your decision.
  5. Decide on volume. If two tests a month is enough, stay on the free plan. If not, packs or unlimited apply.

Frequently asked questions

Is there a free continuous performance test for clinicians? Yes. AxonCPT lists 2 free tests every month with no card; MOXO lists 2 free practice assessments with a new account; BrainTrain and Creyos offer trials. Open-source software such as PEBL is free but isn’t a normed clinical product.

Can I use a free online ADHD test meant for the public? Consumer quizzes are usually symptom questionnaires, not performance tests, and they’re not designed for clinical documentation. Use an instrument intended for clinicians.

Are free tests as valid as paid ones? Price doesn’t determine validity; look at the normative sample and published evidence for the specific test. Open-source tasks differ: they lack clinical norms, and some scores have shown limited reliability [3].

Do I need a credit card for AxonCPT’s free plan? No. AxonCPT’s website says no card is required for the free plan.

Start testing your patients with AxonCPT

If cost has kept objective data out of your ADHD evaluations, start without it: AxonCPT gives you 2 free tests every month with no card, and your patient completes the test from home. Create your free AxonCPT account and send your first test today, or learn more at axoncpt.com.

References

  1. PEBL. The Psychology Experiment Building Language. Accessed September 27, 2026.
  2. Piper B, Mueller ST, Talebzadeh S, Ki MJ. Evaluation of the validity of the Psychology Experiment Building Language tests of vigilance, auditory memory, and decision making. PeerJ. 2016;4:e1772.
  3. Langner R, Scharnowski F, Ionta S, et al. Evaluation of the reliability and validity of computerized tests of attention. PLoS One. 2023;18(1):e0281196.
  4. Varela JL, Magnante AT, Miskey HM, et al. A systematic review of the utility of continuous performance tests among adults with ADHD. The Clinical Neuropsychologist. 2024.
  5. Vendor pages, accessed September 27, 2026: AxonCPT; MOXO getting started and FAQ; BrainTrain trial, IVA-2, and price list; Creyos vs. Qbtech; TOVA store; Qbtech QbCheck; MHS storefront and CPT Suite FAQ.
  6. U.S. Food and Drug Administration. 510(k) Premarket Notification database. Accessed September 27, 2026.