# S.I.S vs CertMike CompTIA Exam Prep Pro

The clearest difference is in-app purchases: S.I.S at none against CertMike CompTIA Exam Prep Pro's 4. S.I.S also leads on update cadence (every 2 months vs every 7 months). CertMike CompTIA Exam Prep Pro's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 15.0). On price and ads there is nothing between them.

Both are free to download. CertMike CompTIA Exam Prep Pro sells 4 in-app purchases, starting at $14.99 per month. S.I.S asks for nothing beyond the download.

S.I.S ships an update every 2 months, CertMike CompTIA Exam Prep Pro every 7 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | S.I.S | CertMike CompTIA Exam Prep Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/certmike-comptia-exam-prep-pro/id6474350907/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | — | Freemium |
| Size | 58 MB | 53 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [WINTECH SOFTWARE DEVELOPMENT (CAMBODIA) CO., LTD](https://appshunter.io/developer/1597112884) | [learnZapp](https://appshunter.io/developer/435622455) |

## What reviewers say

### S.I.S

[App page](https://appshunter.io/ios/app/sis/id1399994628)

**Features:** macOS Compatibility

**In-app purchases:** none


### CertMike CompTIA Exam Prep Pro

[App page](https://appshunter.io/ios/app/certmike-comptia-exam-prep-pro/id6474350907)

Prepare for CompTIA certifications with this comprehensive study tool. Access over 600 exam-like questions, flashcards, mock exams, and a personalized readiness score to track your progress and build custom tests. Study on any device with regular content updates.

**Highlights:** Over 600 exam-like questions, 1400+ flashcards, Readiness Score, Custom Test Builder, Progress Tracker, Full-length Mock Exams, Cross-device accessibility

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access - 1 Month | $14.99 | per month |
| All Accès - 3 Months | $34.99 | per 3 months |
| All Access - 6 Months | $59.99 | per 6 months |
| All Access - 1 Year | $99.99 | per year |


## Frequently asked questions

### Is S.I.S free?

S.I.S is free to download, with no in-app purchases.

### Is CertMike CompTIA Exam Prep Pro free?

CertMike CompTIA Exam Prep Pro is free to download, with in-app purchases available.

### Do S.I.S or CertMike CompTIA Exam Prep Pro have ads?

Neither S.I.S nor CertMike CompTIA Exam Prep Pro shows ads.

### Which is updated more often, S.I.S or CertMike CompTIA Exam Prep Pro?

S.I.S ships an update every 2 months, and CertMike CompTIA Exam Prep Pro every 7 months. Most recently, S.I.S was updated on October 19, 2026 and CertMike CompTIA Exam Prep Pro 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.*