# 89th Parallel vs PaperStack CAIE Past Papers

The clearest difference is review sentiment: PaperStack CAIE Past Papers at 50% against 89th Parallel's 0%. 89th Parallel's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. PaperStack CAIE Past Papers sells 4 in-app purchases, starting at $1.99 per 7 days. 89th Parallel asks for nothing beyond the download.

89th Parallel ships an update weekly, PaperStack CAIE Past Papers every 6 days. The most recent releases landed on September 22, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 89th Parallel | 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 | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 54 MB | 90 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Keyaan Minhas](https://appshunter.io/developer/1830012904) | [Salman Tariq](https://appshunter.io/developer/1892139840) |

## What reviewers say

### 89th Parallel

[App page](https://appshunter.io/ios/app/89th-parallel/id6752125503)

Access professional courses, track your learning progress, and engage with interactive content on any device. Features AI-powered assistance for instant help and personalized recommendations. Offers a secure and seamless online learning experience.

**Highlights:** Smart course management, Real-time progress tracking, Rich media learning content, AI-powered learning assistant, Cross-device synchronization, Enterprise-grade security

**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 (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $1.99 | per 7 days |
| Monthly Premium | $3.99 | per month |
| PaperStack Premium 6 Months | $24.99 | per 6 months |
| PaperStack Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is 89th Parallel free?

89th Parallel 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 89th Parallel or PaperStack CAIE Past Papers have ads?

PaperStack CAIE Past Papers shows ads; 89th Parallel does not.

### Which is updated more often, 89th Parallel or PaperStack CAIE Past Papers?

89th Parallel ships an update weekly, and PaperStack CAIE Past Papers every 6 days. Most recently, 89th Parallel was updated on September 22, 2026 and PaperStack CAIE Past Papers on October 3, 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.*