# AB-900 Prep: M365 Admin — 500 Qs · mock exam

> 500 Qs · mock exam (iPhone/iPad app by Atsuhiro Inoue.)

- Source: https://appshunter.io/ios/app/ab-900-prep-m365-admin/id6776277539 (this page in markdown: same URL + `.md`)
- Developer: [Atsuhiro Inoue](https://appshunter.io/developer/1871193294)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.6 · 12 MB
- Languages: American English, Japanese, Korean, Brazilian Portuguese, Chinese (Traditional, Taiwan)
- Released: 2026-06-08
- Data updated: 2026-09-01
- User reviews in markdown: https://appshunter.io/ios/app/ab-900-prep-m365-admin/id6776277539/reviews.md

## What is AB?

The serious study companion for AB-900 (Microsoft 365 Copilot and Agent Administration Fundamentals). 500 original questions built to the official Study Guide, plus a full-length mock exam. One-time purchase, no subscription, fully offline.

■ 500 original questions, built to the official Study Guide
Authored to match the AB-900 blueprint across all 3 domains — never copied from Microsoft practice questions, docs, or admin-center screenshots. Three question types: single choice, multiple response, and matching.

■ Three-layer explanations: learn by understanding
- Per-option rationale (why each choice is right or wrong)
- An overall explanation for the question
- Source references (Microsoft Learn)
The role differences between easily-confused products — DLP vs sensitivity labels, Defender vs Purview — finally click. Build real knowledge instead of relying on elimination.

■ Full-length mock exam
Recreates the real exam (~45 minutes, pass mark 700/1000). After finishing, per-domain accuracy reveals your weak spots. Choose 5–50 questions.

■ Structured, efficient study
- Study by domain and section across all 3 domains (focus on the high-weight, tricky Purview domain)
- 5 study modes (sequential, shuffle, weak-spot focus, favorites, review, and more)
- Progress syncs across your devices via iCloud

■ Bilingual JA/EN to master the terminology
AB-900 can be taken in Japanese, but product and admin-center names (Microsoft Purview, Microsoft Entra ID, Defender XDR, etc.) are in English. Switch between Japanese and English to understand the material and lock in the English terms.

■ About AB-900
Microsoft 365 Copilot and Agent Administration Fundamentals. A fundamentals certification covering core Microsoft 365 services and security, data protection and governance with Microsoft Purview, and administration of Microsoft 365 Copilot and agents — from an administrator's perspective.

■ Pricing (one-time, no subscription)
- Try the first 10 questions of each domain (30 total) plus one mock exam for free.
- A single ¥1,280 purchase unlocks all 500 questions and the mock exam. No monthly fees, no extra charges.

■ Compatibility
Works on iPhone and iPad. Runs fully offline, so you can study anywhere.

―――
Microsoft, Microsoft 365, Copilot, and Purview are trademarks of Microsoft Corporation. This is an independent exam-prep app and is not endorsed by, affiliated with, or sponsored by Microsoft.

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Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vRQLBWxPqUWFXYXLn2AgY23zdORK5tRzj3SiUb1MVcWIfksqlRJYOQT1QdLCRzuMILG_RIxFpojRXvc/pub

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Questions | $12.99 | one-time |



## Version history (last 5 releases)

### 1.4.0 — 2026-08-22

• Redesigned Final Review around a five-stage roadmap, bringing together exam weighting, progress, decision rules, and when to use—or not use—each admin center.
• You can now retest only the questions you missed in the current study session directly from the results screen.

### 1.3.0 — 2026-08-10

Added a new Final Review guide. Review all three domains and ten tasks in 12 structured chapters, including decision rules, commonly confused features, admin surfaces, and official references.

We also reworked the explanations for all 500 questions. Each explanation now covers why the answer is correct, how the feature works, how it differs from tempting alternatives, and how to identify the right answer in similar questions.

### 1.2.5 — 2026-07-28

After a purchase or restoration, access now updates immediately throughout the app, including the section list.

### 1.2.4 — 2026-07-05

Updated our support and official website information. No changes to app functionality.

### 1.2.3 — 2026-07-01

Improved how the "average score of your last 3 mock exams" on the Home screen is calculated. It's now a weighted average (total correct ÷ total questions) instead of a simple average, so mixing exams of different lengths reflects your true performance more accurately.

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All apps by Atsuhiro Inoue: https://appshunter.io/developer/1871193294

## Related topics

[o365 admin](https://appshunter.io/ios/topics/o365-admin) · [ms365 admin](https://appshunter.io/ios/topics/ms365-admin) · [365 admin](https://appshunter.io/ios/topics/365-admin)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*