# DSST Information Systems Prep vs Group Exercise Instructor Exam

The clearest difference is price: Group Exercise Instructor Exam at Free against DSST Information Systems Prep's $1.99. Group Exercise Instructor Exam also leads on iOS requirement (15.1 vs 18.0). DSST Information Systems Prep's advantage is in-app purchases (none vs 5). On update cadence, ads and device support there is nothing between them.

Group Exercise Instructor Exam is free to download; DSST Information Systems Prep costs $1.99 up front. Group Exercise Instructor Exam sells 5 in-app purchases, starting at $7.99 per 7 days. DSST Information Systems Prep asks for nothing beyond the download.

DSST Information Systems Prep ships an update every 5 months, Group Exercise Instructor Exam every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DSST Information Systems Prep | Group Exercise Instructor Exam |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/group-exercise-instructor-exam/id6464085072/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 39 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feraco media Inc.](https://appshunter.io/developer/497957884) | [Exam Prep OU](https://appshunter.io/developer/1689642184) |

## What reviewers say

### DSST Information Systems Prep

[App page](https://appshunter.io/ios/app/dsst-information-systems-prep/id957408487)

**Features:** macOS Compatibility

**In-app purchases:** none


### Group Exercise Instructor Exam

[App page](https://appshunter.io/ios/app/group-exercise-instructor-exam/id6464085072)

Prepare for the ACSM Certified Group Exercise Instructor exam with practice questions, detailed study materials, and performance tracking. Simulate exam conditions with timed quizzes and mock exams to build confidence for a successful fitness career.

**Highlights:** Extensive question bank, Multiple quiz modes, Performance tracking, Comprehensive study materials, Timed quizzes and mock exams, Real-world scenario practice

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Full Access | $7.99 | per 7 days |
| Monthly Full Access | $19.99 | per month |
| Monthly Full Access | $24.99 | per month |
| GEI ACSM Quarterly Full Access | $55.99 | per 3 months |
| GEI ACSM Quarterly Full Access | $59.99 | per 3 months |


## Frequently asked questions

### Is DSST Information Systems Prep free?

DSST Information Systems Prep costs $1.99, with no in-app purchases.

### Is Group Exercise Instructor Exam free?

Group Exercise Instructor Exam is free to download, with in-app purchases available.

### Do DSST Information Systems Prep or Group Exercise Instructor Exam have ads?

Neither DSST Information Systems Prep nor Group Exercise Instructor Exam shows ads.

### Which is updated more often, DSST Information Systems Prep or Group Exercise Instructor Exam?

DSST Information Systems Prep ships an update every 5 months, and Group Exercise Instructor Exam every 4 months. Most recently, DSST Information Systems Prep was updated on November 1, 2026 and Group Exercise Instructor Exam on November 3, 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.*