# Memory Roulette vs PDF Reader

The clearest difference is review sentiment: Memory Roulette at 100% against PDF Reader's 0%. Memory Roulette also leads on price (Free vs $3.99) and rating (5.0 vs 1.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Memory Roulette is free to download; PDF Reader costs $3.99 up front. Memory Roulette sells 3 in-app purchases, starting at $5.99 per month and PDF Reader sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Memory Roulette holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Memory Roulette's written reviews are positive against 0% of PDF Reader's.

Memory Roulette ships an update every 4 days, PDF Reader every 4 months. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Memory Roulette | PDF Reader |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/memory-roulette/id6755274912/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pdf-reader-for-pdf-reading/id6756018034/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 4 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 37 MB | 9 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [志文 李](https://appshunter.io/developer/1852909959) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### Memory Roulette

[App page](https://appshunter.io/ios/app/memory-roulette/id6755274912)

Transform your cluttered camera roll into a curated collection of cherished memories. This app gamifies photo organization, offering daily surprise selections for quick review and decluttering. Rediscover forgotten moments and enjoy a cleaner, more meaningful photo library.

**Highlights:** Daily surprise photo crates, 3-second swipe review (Favorite, Share, Delete), Gamified photo decluttering, Unlimited draws with premium, Customizable roulette filters (year, location, type), Rediscover forgotten memories

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $5.99 | per month |
| Yearly Subscription | $49.99 | per year |
| lifetime | $39.99 | one-time |


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-for-pdf-reading/id6756018034)

This app offers a streamlined way to read, annotate, and organize PDF documents on iOS devices. It features smooth rendering, smart annotation tools, and cloud synchronization for easy access across devices. Enjoy a distraction-free reading experience with features like night mode and reading progress memory.

**Highlights:** Smooth PDF rendering, Highlight text and add notes, Organize documents with categories, iCloud and cloud storage import, Reading progress memory, Night mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFReader Premium - monthly | $1.99 | per month |
| PDFReader Premium - yearly | $14.99 | per year |
| PDFReader Premium - lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Memory Roulette free?

Memory Roulette is free to download, with in-app purchases available.

### Is PDF Reader free?

PDF Reader costs $3.99, and also offers in-app purchases.

### Which has better reviews, Memory Roulette or PDF Reader?

Memory Roulette is rated higher. Memory Roulette averages 5.0 out of 5 from 1 ratings, while PDF Reader averages 1.0 from 1 ratings.

### Do Memory Roulette or PDF Reader have ads?

Neither Memory Roulette nor PDF Reader shows ads.

### Which is updated more often, Memory Roulette or PDF Reader?

Memory Roulette ships an update every 4 days, and PDF Reader every 4 months. Most recently, Memory Roulette was updated on October 8, 2026 and PDF Reader on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*