New NCIDQ Complete memberships are USD $99 per month. The table below is read from the live content library so you can see exactly what you are buying access to today before you subscribe.
$99 / monthUSD · new memberships · includes IDFX, IDIX and IDPX
New memberships are $99/month, down from the previous $149/month — $50/month less.
Billed monthly until you cancel. Cancel any time from your account; ordinary cancellation keeps access to the end of the paid period. A first-payment refund approved under the seven-day guarantee instead cancels the subscription and ends paid access. Creating an account is free — you are not charged until you complete checkout.
Seven-day money-back guarantee: request a full refund of your first membership payment within seven days of that payment through the Contact page (Billing / Refund). Renewal payments are not covered. An approved guarantee refund cancels your subscription and ends paid access. Refund Policy · Contact
NCIDQ Complete
IDFX · IDIX · IDPX INCLUDED
$99USD per month · new memberships
New memberships are $99/month, down from the previous $149/month — $50/month less.
Existing subscribers keep their original billed amount; this new-member offer does not change your current subscription.
Structured lessons with key concepts and flashcards
Practice questions with explanations and references
Timed practice exams with saved attempts and review
Seven-day money-back guarantee: request a full refund of your first membership payment within seven days of that payment through the Contact page (Billing / Refund). Renewal payments are not covered. An approved guarantee refund cancels your subscription and ends paid access. Refund Policy · Contact
Interior Prep Studio material is authored and reviewed by K. Smith, licensed engineer, and E. Smith, licensed architect. Authors and reviewers
Free public samples · no account or payment required.
Membership is open to new subscribers for IDFX, IDIX and IDPX. Accounts are free to create; subscribe when you are ready to open the study material.
Included today
Counts come straight from the published library. Draft, inactive and under-review material is excluded, and each question is counted once however many study sets use it.
IDFX
Published
Lessons
82
Modules
8
Practice questions
934
Timed-exam questions
1035
Total study questions
1969
Flashcards
376
Full-length timed exams
9
IDIX
Published
Lessons
100
Modules
7
Practice questions
1100
Timed-exam questions
1170
Total study questions
2270
Flashcards
400
Full-length timed exams
9
IDPX
Published
Lessons
90
Modules
7
Practice questions
900
Timed-exam questions
1035
Total study questions
1935
Flashcards
360
Full-length timed exams
9
All study content is written in-house and is released only after the owner records a content confirmation. Anything not yet confirmed stays unpublished.
Billing
Charged monthly to the card you provide. Secure checkout is handled by Stripe; card details are never stored by Interior Prep Studio.
Cancelling
Ordinary cancellation stops future renewals and keeps access to the end of the paid period; it does not refund charges already processed. A refund approved under the seven-day guarantee is different: it cancels the subscription and ends paid access.
Independence
Interior Prep Studio is an independent study provider. It is not affiliated with, endorsed by, or licensed by CIDQ.
Study Readiness is an internal study-planning metric calculated from your activity and practice accuracy on this platform. It is not a CIDQ score, not a validated pass probability, and not a prediction of your exam result.
