Best psychopharmacology app for prescribers and what each one costs

The best psychopharmacology app for most US prescribers is NEI Prescribe, the app built on Stahl's Prescriber's Guide, but it is not really an app purchase: it unlocks with an NEI membership that costs $349 for the first year and $249 to renew. If you want a paid app without a membership, the Maudsley Prescribing Guideline app is $64.99 a year and Psych Drugs Pro is $119.99 a year. The Waco Guide to Psychopharmacology is free and is the one most primary care clinicians should install first. We read every price below on the vendor's own page or the US App Store in October 2026.

Which one you should pay for depends on who you are. A psychiatrist or psychiatric nurse practitioner who wants depth and pearls buys something different from a family physician who manages depression and anxiety and refers the harder cases. Neither group gets what it most needs from a reference alone, which is a check of the new prescription against everything else the patient takes. We come back to that at the end.

Psychopharmacology apps compared by price

Two things stand out. The most respected psychiatry-specific reference is sold as a membership, so its real cost is $349 and then $249 a year, much more than any app price on this list. And the cheapest paid app that a prescriber would actually rely on is Maudsley at $64.99, which is a third of an NEI membership.

NEI Prescribe and what the NEI membership actually costs

NEI Prescribe is published by the Neuroscience Education Institute, the organization behind Stephen Stahl's teaching. The app is free on the App Store and lists full prescribing details for more than 140 psychiatric drugs, with a filter that narrows the list to drugs that fit a particular patient, separate adult and child and adolescent libraries, and offline use. On NEI's own membership page, guests get NEI Prescribe as a 90-day trial only. After that it is a member benefit.

NEI's rates page lists these prices for a membership, read in October 2026:

• Standard, 1 year: $349 new, $249 renewal
• Standard, 2 years: $598 new ($299 a year), $478 renewal ($239 a year)
• Military and VA, 1 year: $259 new, $209 renewal
• Student or resident, 1 year: $149
• Institutions with 10 or more members: discounted rate by quote

The renewal price only applies if your membership is continuous with no lapse. NEI refunds a cancellation within 30 days of purchase, minus any discounts used in that period, and gives no refunds after 30 days.

What makes the membership easier to justify is everything else in it. Members get the Master Psychopharmacology Program, Stahl's Essential Psychopharmacology videos, hundreds of CME and CE credits, PDF versions of the Prescriber's Guide series and full-text CNS Spectrums. If you would otherwise pay for psychiatry CME separately, $249 a year after the first year is reasonable. If you only want a drug lookup on your phone, it is the most expensive way to get one.

Maudsley Prescribing Guideline, the cheaper deep reference

The Maudsley Prescribing Guidelines in Psychiatry are a long-running clinical reference from South London and Maudsley, and the app version is sold by Skyscape Medpresso. The listing says it carries content licensed from the 15th edition print book (ISBN 9781394238774). It is free to download with sample content; full access is an auto-renewing subscription at $64.99 a year, $59.99 for six months or $39.99 for three months.

Maudsley is strongest where other references are thin: switching between antidepressants and antipsychotics, treatment-resistant depression and schizophrenia, clozapine, and prescribing in pregnancy, older adults and hepatic or renal impairment. The one caution for US prescribers is that it is written in the UK. Brand names, licensing status and some formulations follow UK practice, so check FDA labeling before relying on an off-label note.

Psych Drugs Pro, PsychNotes and the free Waco Guide

Psych Drugs and Medications is a phone-first reference built by a board-certified psychiatrist from FDA labeling. It covers 443 psychiatric medications with dosing, interactions and safety alerts. The Pro upgrade is $20 a month or $119.99 a year, and a 3-day trial was added in July 2026. Annual is the only sensible choice: twelve months at $20 is $240, double the annual rate.

PsychNotes is a Davis clinical pocket guide sold through Skyscape at $29.99 a year. It is built for psychiatric nursing and students, with assessment tools and communication techniques. Useful, but not a prescriber's reference.

The Waco Guide to Psychopharmacology is free, comes from a family medicine residency foundation in Texas, and turns common psychiatric conditions into stepwise treatment algorithms for adults, adolescents, older adults and pregnancy. It now shows the strength of recommendation inside the app. For a primary care clinician deciding on a second-line agent, it is the first thing to try before paying for anything.

Which psychopharmacology app should you buy?

• Psychiatrist or PMHNP in practice: an NEI membership if you will use the CME, otherwise Maudsley at $64.99 as the deep reference plus a general drug app.
• Psychiatry resident or PMHNP student: NEI at the $149 student and resident rate is the best value on this page.
• Family physician, internist or FNP: the free Waco Guide for algorithms, plus whatever general drug reference you already pay for. A psychiatry-only app is hard to justify.
• Psychiatric nurse who does not prescribe: PsychNotes at $29.99 or a nursing bundle such as Nursing Central, priced here.

Medication is rarely the whole plan. If you manage a patient who also needs talk therapy, a directory that lets you find a licensed therapist near your patient saves the back-and-forth of a referral list that is out of date.

What none of these apps do

Every app above answers a question about a drug. None of them answers the question a prescriber faces when adding a drug: is this safe for this patient, with this list, this kidney function and this history? Psychiatric patients make that question harder than most. A typical medication list mixes an SSRI, a second antipsychotic, a mood stabilizer, something for sleep and two or three medicines from primary care.

That is where the real risks sit. Serotonergic drugs stack up across specialties: an SSRI from psychiatry, tramadol from an urgent care visit, a triptan from neurology. Fluoxetine and paroxetine are strong CYP2D6 inhibitors and raise levels of other drugs. Citalopram carries an FDA warning on QT prolongation above 40 mg a day, and the risk compounds with other QT-prolonging drugs. Lithium is cleared by the kidney, so a falling eGFR or a new NSAID, ACE inhibitor or thiazide changes the picture. A reference tells you each of these facts when you look them up. It does not notice them for you.

Prescriber.io does that step. You enter the medication list with the patient's eGFR, liver function, allergies and conditions, and one card comes back with interactions, contraindications, renal and hepatic dose adjustments and guideline-based alternatives, each with a cited source. You review it and sign. Our serotonin syndrome drug combinations guide shows the kind of stacking it flags, and the contraindication checker page shows how the condition and allergy checks work.

Prescriber.io costs $24 a month per clinician billed yearly ($288), or $49 month to month. That is less than a first-year NEI membership and it does a different job. Most psychiatric prescribers who buy it keep their reference app too. For a wider view of paid references by role, see our best drug reference app guide, and for the full interaction checker landscape, the best drug interaction checker comparison.