# LumiSource vs AP Exam Master

The clearest difference is in-app purchases: LumiSource at none against AP Exam Master's 2. LumiSource also leads on rating (4.8 vs 4.4) and review sentiment (93% vs 75%). AP Exam Master's advantage is update cadence (every 4 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AP Exam Master sells 2 in-app purchases, starting at $9.99 per month. LumiSource asks for nothing beyond the download.

LumiSource holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: LumiSource has 127 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 93% of LumiSource's written reviews are positive against 75% of AP Exam Master's.

LumiSource ships an update every 3 months, AP Exam Master every 4 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | LumiSource | AP Exam Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (127 ratings)](https://appshunter.io/ios/app/lumisource-exam-prep/id6746340356/reviews)** | [4.4 (9 ratings)](https://appshunter.io/ios/app/ap-exam-master/id6757391639/reviews) |
| Number of ratings | **127** | 9 |
| Positive reviews | **93.3% of reviews** | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | **Free** | Subscription |
| Size | 81 MB | 83 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CaseHippo Inc](https://appshunter.io/developer/1551575873) | [Popfizz Edu Inc.](https://appshunter.io/developer/1866127736) |

## What reviewers say

### LumiSource

[App page](https://appshunter.io/ios/app/lumisource-exam-prep/id6746340356)

Prepare for AP exams with condensed study guides and realistic practice tests. This app offers mobile-optimized content for efficient review anytime, anywhere. It currently supports over 10 AP subjects.

**Highlights:** Condensed study guides, Realistic practice tests, Detailed answer breakdowns, Mobile-optimized for on-the-go study, Supports over 10 AP subjects

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

**In-app purchases:** none


### AP Exam Master

[App page](https://appshunter.io/ios/app/ap-exam-master/id6757391639)

Prepare for Advanced Placement exams with structured study materials and practice questions. Track your progress and learn at your own pace on any mobile device. Offers a free trial for subscription access.

**Highlights:** Organized content by units and topics, Practice questions with detailed explanations, Progress tracking, Self-paced learning, Mobile-first design, Free trial available

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $54.99 | per year |


## Frequently asked questions

### Is LumiSource free?

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

### Is AP Exam Master free?

AP Exam Master is free to download, with in-app purchases available.

### Which has better reviews, LumiSource or AP Exam Master?

LumiSource is rated higher. LumiSource averages 4.8 out of 5 from 127 ratings, while AP Exam Master averages 4.4 from 9 ratings.

### Do LumiSource or AP Exam Master have ads?

Neither LumiSource nor AP Exam Master shows ads.

### Which is updated more often, LumiSource or AP Exam Master?

LumiSource ships an update every 3 months, and AP Exam Master every 4 days. Most recently, LumiSource was updated on October 25, 2026 and AP Exam Master 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.*