If you are studying for the EPPP, you have probably run into AATBS. It has been around since 1976 and most people who prep for this exam have heard the name. You are likely here trying to decide if it is worth the price, or if something newer fits you better.

I should be upfront. I am Anders Chan, a licensed psychologist. I built thePsychology.ai, so I have a stake in this. That is exactly why I want to be fair. AATBS is a real, established product with real strengths, and I will not pretend otherwise. Here is a straight comparison so you can pick what is right for you.

The short answer: pick AATBS if you want the biggest question bank, a name known since 1976, and a fixed, structured plan you pay for once. Pick thePsychology.ai if you want studying that adapts to your weak spots, a low monthly cost, built-in stress tools, and a free trial before you pay a cent.

thePsychology.ai vs AATBS

	thePsychology.ai	AATBS
Price	$50/mo through Aug 31, 2026; $60/mo after	$849 to $1,799 (published pricing, August 2026)
Pricing model	Monthly subscription	One-time purchase
Adaptive learning	Continuous AI loop that recalibrates every session	Static study plans, no adapting
Question bank	2,000+, unlimited after 4 full exams	Over 3,000
Wellness tools	Built into the study flow	None
Free trial	7 days, no credit card	None

Where AATBS is strong

• Very large question bank, over 3,000 practice questions.
• Strong name recognition. It has been a known option since 1976.
• Structured, traditional study plans if you like a set path laid out for you.

Where thePsychology.ai is different

• A continuous adaptive loop. It recalibrates every session and brings back missed concepts from new angles until the material actually sticks.
• The lowest monthly price in this comparison.
• A free 7-day trial with no credit card. You can try the whole thing before you pay a cent.
• Mindfulness and wellness tools built right into the study flow. This is unique in the category, and the EPPP is stressful enough to need it.
• Built by licensed psychologists who took the exam. I scored 588. The 80+ lessons are written by people who sat in the same chair you will.

I will also name my own weak spots. thePsychology.ai is newer, so the track record is shorter and the user community is smaller. There is now a native iPhone app with synced progress; Android users get the mobile-responsive web interface. Users have reported that AATBS materials can feel dry and the platform looks dated, but AATBS has the longer history.

A quick note on price

thePsychology.ai is $50/month after a free 7-day trial through August 31, 2026, and $60/month for new members from September 1, 2026. Whatever rate you join at is the rate you keep for as long as you study. No long-term contract, cancel anytime. AATBS's published pricing (August 2026) runs $849 for the 3-month self-study package up to $1,799 for 12 months with live online instruction. No pressure, just the honest math.

Who should pick what

Pick AATBS if you want the biggest possible question bank, a familiar name, and you prefer paying once for a fixed, structured plan you follow on your own.

Pick thePsychology.ai if you want studying that adapts to your weak spots, a low monthly cost, built-in tools to manage the stress, and lessons written by psychologists who passed the exam. It also helps if you want to try before you buy.

Either way, the right answer is the one that actually gets you to study and pass. Both can do that.

Frequently Asked Questions

Is AATBS worth it for EPPP prep?

It is a real, established product. You get a very large question bank of over 3,000 practice questions, strong name recognition going back to 1976, and structured, traditional study plans if you like a set path. Users have reported the materials can feel dry and the platform looks dated, but the history is the longest in the category.

What makes thePsychology.ai different from AATBS?

The adaptive loop. It recalibrates every session and brings back missed concepts from new angles until the material sticks, while AATBS uses static study plans. thePsychology.ai also builds mindfulness and wellness tools into the study flow, and its 80+ lessons are written by licensed psychologists who took the exam.

Does thePsychology.ai or AATBS have a free trial?

thePsychology.ai has a free 7-day trial with no credit card, so you can try the whole platform before you pay. AATBS has no free trial.

Try it yourself

The easiest way to know if thePsychology.ai fits you is to use it. You can start a free 7-day trial with no credit card, see how the adaptive loop feels, and decide from there.