Comparison

ARDMS SPI Exam Prep vs Sono Techniques Academy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ARDMS SPI Exam Prep

Prepare for the ARDMS SPI exam with over 350 registry-level questions and detailed explanations. This app offers mock exams, category-specific practice, and test-taking tips, all accessible offline. It's designed for Sonographers, Students, and Physicians seeking to pass the Diagnostic Medical Sonography exam.

Highlights
  • 350+ registry-level practice questions
  • 120-question mock exams
  • Six focused study categories
  • Detailed question feedback
  • Test-taking strategies
  • Offline access
Features
Read full description

Looking to become a registered Diagnostic Medical Sonographer? Look no further than our ARDMS SPI Exam Prep app! With over 350 registry-level questions, our app is designed to help Sonographers, Students, and Physicians pass the American Registry for Diagnostic Medical Sonography exam. Take ARDMS SPI practice questions and practice tests anywhere, anytime. Our app offers a comprehensive study experience with 120 question mock exams, six different categories to focus on specific areas, and detailed explanations and feedback to help students understand the material. Our home page offers three options: Practice Exams, Test Taking Tips, and About. At the end of each mock exam or after practicing a category, you can see the overall results and a breakdown of every question you got wrong or right. The Practice Exams section offers timed or untimed exams and six different categories to focus on specific areas of the exam. Categories include: - Elementary Principles and Propagation of Sound through Tissue - Transducers - Pulse-echo Instrumentation / Imaging and Display - Doppler Instrumentation, Color Flow and Hemodynamics - Quality Assurance, Bioeffects, and Patient Care - Artifacts. The Test Taking Tips section offers expert advice on how to approach different types of questions and categories, as well as general advice on passing the exam. The app is authored by Donna M. Perry BS, RDMS, RVT, a registered Diagnostic Medical Sonographer and Ultrasound Instructor at Keiser University in Daytona Beach, Florida, with 10+ years of field experience and 20+ years of experience in teaching Cardiovascular Hemodynamics and Ultrasound Physics and Instrumentation. With no internet connection required, our ARDMS SPI Exam Prep app is compatible with iOS devices running iOS 13 or higher. Start studying for the ARDMS SPI exam today with our fun and interactive app!

About

Sono Techniques Academy

Master ultrasound skills with interactive modules, real case studies, and ARDMS-style quizzes. This platform offers voice-guided walkthroughs and expert-reviewed content for OB/GYN students and professionals. Learn anytime, anywhere to prepare for board exams or refine core techniques.

Highlights
  • Interactive learning modules
  • Real case-based practice
  • ARDMS-style registry prep quizzes
  • Voice-guided walkthroughs
  • Expert-reviewed content
  • Mobile-first platform
Read full description

Sono Techniques Academy is a mobile-first platform built for OB/GYN students, techs, and clinicians looking to master ultrasound skills. Gain access to: Interactive learning modules Real case-based practice Registry prep quizzes (ARDMS-style) Voice-guided walkthroughs Expert-reviewed content built on medical guidelines (ALARA, AIUM) Whether you're prepping for your board exam or brushing up on core techniques, Sono Techniques Academy gives you the flexibility to learn anytime, anywhere. Subscription details: - Monthly: $19.99 per month, auto-renewing - Annual: $99.99 per year, auto-renewing Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://sonotechniquesacademy.com/terms Privacy Policy: https://sonotechniquesacademy.com/privacy

Screenshots

ARDMS SPI Exam Prep4 screens
Sono Techniques Academy3 screens

Verdict

The call

The clearest difference is price: Sono Techniques Academy at Free against ARDMS SPI Exam Prep's $19.99. Sono Techniques Academy also leads on rating (5.0 vs 3.8) and update cadence (every 3 months vs every 10 months). ARDMS SPI Exam Prep's advantage is ratings volume (15 vs 2). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Sono Techniques Academy is free to download; ARDMS SPI Exam Prep costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Sono Techniques Academy holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: ARDMS SPI Exam Prep has 15 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

ARDMS SPI Exam Prep ships an update every 10 months, Sono Techniques Academy every 3 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
ARDMS SPI Exam Prep versus Sono Techniques Academy: the parameters behind the verdict, then further details
ParameterARDMS SPI Exam PrepSono Techniques Academy
Price$19.99Free — better
Rating3.8 (15 ratings)5.0 (2 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings15 — better2
Update frequencyEvery 10 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size11 MB42 MB
Age rating4+4+
DeveloperDonna PerryLynn Flamm

Customer experience

ARDMS SPI Exam Prep

All ratings15 ratings
Positive60.0%
Neutral13.3%
Negative26.7%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

Sono Techniques Academy

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ARDMS SPI Exam Prep

No in-app purchases

None

Sono Techniques Academy

No in-app purchases

Questions

Is ARDMS SPI Exam Prep free?
ARDMS SPI Exam Prep costs $19.99, with no in-app purchases.
Is Sono Techniques Academy free?
Sono Techniques Academy is free to download, with no in-app purchases.
Which has better reviews, ARDMS SPI Exam Prep or Sono Techniques Academy?
Sono Techniques Academy is rated higher. ARDMS SPI Exam Prep averages 3.8 out of 5 from 15 ratings, while Sono Techniques Academy averages 5.0 from 2 ratings.
Do ARDMS SPI Exam Prep or Sono Techniques Academy have ads?
Neither ARDMS SPI Exam Prep nor Sono Techniques Academy shows ads.
Which is updated more often, ARDMS SPI Exam Prep or Sono Techniques Academy?
ARDMS SPI Exam Prep ships an update every 10 months, and Sono Techniques Academy every 3 months. Most recently, ARDMS SPI Exam Prep was updated on November 3, 2026 and Sono Techniques Academy on October 30, 2026.

Other comparisons