# Disease Intervention Exam Prep vs Sesla

The clearest difference is update cadence: Sesla at every 5 days against Disease Intervention Exam Prep's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Disease Intervention Exam Prep sells 9 in-app purchases, starting at $8.99 per 7 days and Sesla sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Disease Intervention Exam Prep ships an update every 4 months, Sesla every 5 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Disease Intervention Exam Prep | Sesla |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/disease-intervention-exam-prep/id6741022399/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 67 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Exam Prep OU](https://appshunter.io/developer/1689642184) | [GOKHAN OGUZ](https://appshunter.io/developer/1893621626) |

## What reviewers say

### Disease Intervention Exam Prep

[App page](https://appshunter.io/ios/app/disease-intervention-exam-prep/id6741022399)

Prepare for the Certified in Disease Intervention exam with up-to-date content, an extensive question bank, and detailed explanations. Track your progress, customize study plans, and take simulated exams to build confidence for public health certification.

**Highlights:** Up-to-date content, Extensive question bank, Detailed explanations, Progress tracking, Customizable study plans, Simulated exam mode

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDI Weekly Full Access | $8.99 | per 7 days |
| CDI Monthly Full Access | $24.99 | per month |
| CDI Monthly Full Access | $34.99 | per month |
| CDI Quarterly Full Access | $55.99 | per 3 months |
| CDI Quarterly Full Access | $59.99 | per 3 months |
| CDI Semiannual Full Access | $75.99 | per 6 months |
| CDI Semiannual Full Access | $79.99 | per 6 months |
| CDI Annual Full Access | $109.99 | per year |
| CDI Annual Full Access | $119.99 | per year |


### Sesla

[App page](https://appshunter.io/ios/app/sesla-speech-practice/id6764661762)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sesla Practice Plus | $1.99 | per month |
| Sesla Practice Plus (Annual) | $14.99 | per year |


## Frequently asked questions

### Is Disease Intervention Exam Prep free?

Disease Intervention Exam Prep is free to download, with in-app purchases available.

### Is Sesla free?

Sesla is free to download, with in-app purchases available.

### Do Disease Intervention Exam Prep or Sesla have ads?

Neither Disease Intervention Exam Prep nor Sesla shows ads.

### Which is updated more often, Disease Intervention Exam Prep or Sesla?

Disease Intervention Exam Prep ships an update every 4 months, and Sesla every 5 days. Most recently, Disease Intervention Exam Prep was updated on October 25, 2026 and Sesla on October 24, 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.*