# Orb vs PaperStack CAIE Past Papers

The clearest difference is in-app purchases: Orb at none against PaperStack CAIE Past Papers's 3. Orb also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.5). PaperStack CAIE Past Papers's advantage is update cadence (every 6 days vs every 9 months). On price and device support there is nothing between them.

Both are free to download. PaperStack CAIE Past Papers sells 3 in-app purchases, starting at $1.99 per 7 days. Orb asks for nothing beyond the download.

Orb ships an update every 9 months, PaperStack CAIE Past Papers every 6 days. The most recent releases landed on September 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Orb | PaperStack CAIE Past Papers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (3 ratings)](https://appshunter.io/ios/app/paperstack-caie-past-papers/id6761936480/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 140 MB | 90 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ALPHA ALLIANCE (PRIVATE) LIMITED](https://appshunter.io/developer/1580215107) | [Salman Tariq](https://appshunter.io/developer/1892139840) |

## What reviewers say

### Orb

[App page](https://appshunter.io/ios/app/orb-ed/id6443733393)

**Features:** macOS Compatibility

**In-app purchases:** none


### PaperStack CAIE Past Papers

[App page](https://appshunter.io/ios/app/paperstack-caie-past-papers/id6761936480)

Access over 15,000 CAIE past papers with an AI tutor and multiplayer revision modes. Practice by topic or year, solve MCQs interactively, and study offline.  Features include smart PDF viewing and annotation tools.

**Highlights:** 15,000+ CAIE past papers, AI Tutor with examiner insights, Real-time multiplayer revision, Topical paper generation, Interactive MCQ solver, Offline access, Smart PDF viewer with annotations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $1.99 | per 7 days |
| Monthly Premium | $3.99 | per month |
| PaperStack Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is Orb free?

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

### Is PaperStack CAIE Past Papers free?

PaperStack CAIE Past Papers is free to download, with in-app purchases available.

### Do Orb or PaperStack CAIE Past Papers have ads?

PaperStack CAIE Past Papers shows ads; Orb does not.

### Which is updated more often, Orb or PaperStack CAIE Past Papers?

Orb ships an update every 9 months, and PaperStack CAIE Past Papers every 6 days. Most recently, Orb was updated on September 17, 2026 and PaperStack CAIE Past Papers on September 19, 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.*