# ARDMS SPI Exam Prep vs Sono Techniques Academy

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.

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.

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.

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.

## The numbers

| Metric | ARDMS SPI Exam Prep | Sono Techniques Academy |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | [3.8 (15 ratings)](https://appshunter.io/ios/app/ardms-spi-exam-prep/id1489485659/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sono-techniques-academy/id6748578886/reviews)** |
| Number of ratings | **15** | 2 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | **Paid** | Subscription |
| Size | 11 MB | 42 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Donna Perry](https://appshunter.io/developer/1484586191) | [Lynn Flamm](https://appshunter.io/developer/1826393952) |

## What reviewers say

### ARDMS SPI Exam Prep

[App page](https://appshunter.io/ios/app/ardms-spi-exam-prep/id1489485659)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Sono Techniques Academy

[App page](https://appshunter.io/ios/app/sono-techniques-academy/id6748578886)

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

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*