# UpperMark eReader vs Class Source Connect

The clearest difference is update cadence: UpperMark eReader at every 2 weeks against Class Source Connect's every 6 weeks. UpperMark eReader also leads on iOS requirement (12.2 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpperMark eReader ships an update every 2 weeks, Class Source Connect every 6 weeks. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | UpperMark eReader | Class Source Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/uppermark-ereader/id1518485408/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 112 MB | 44 MB |
| Requires iOS | **12.2** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UpperMark, Inc](https://appshunter.io/developer/1193432095) | [Class Source](https://appshunter.io/developer/6801878300) |

## What reviewers say

### UpperMark eReader

[App page](https://appshunter.io/ios/app/uppermark-ereader/id1518485408)

Access study materials and lecture notes for CAIA exam preparation. This app provides comprehensive handbooks, formula sheets, and flashcards to help you learn and retain key concepts efficiently.

**Highlights:** CAIA exam study handbooks, Course lecture notes, FormulaSheet for key equations, Flashcards for keywords and concepts, Preparation for CAIA exams

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

**In-app purchases:** none


### Class Source Connect

[App page](https://appshunter.io/ios/app/class-source-connect/id6801878298)

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

**In-app purchases:** none


## Frequently asked questions

### Is UpperMark eReader free?

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

### Is Class Source Connect free?

Class Source Connect is free to download, with no in-app purchases.

### Do UpperMark eReader or Class Source Connect have ads?

Neither UpperMark eReader nor Class Source Connect shows ads.

### Which is updated more often, UpperMark eReader or Class Source Connect?

UpperMark eReader ships an update every 2 weeks, and Class Source Connect every 6 weeks. Most recently, UpperMark eReader was updated on October 9, 2026 and Class Source Connect on October 6, 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.*