# GuiKey vs PaperCrush

The clearest difference is ads: GuiKey at none against PaperCrush's shown. PaperCrush's advantage is update cadence (daily vs every 5 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

GuiKey ships an update every 5 months, PaperCrush daily. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | GuiKey | PaperCrush |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Daily** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 13 MB |
| Requires iOS | 17.1 | **17** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kanji Kato](https://appshunter.io/developer/1727035437) | [Naoki Takahashi](https://appshunter.io/developer/1713880270) |

## What reviewers say

### GuiKey

[App page](https://appshunter.io/ios/app/guikey/id6476525736)

**Features:** macOS Compatibility

**In-app purchases:** none


### PaperCrush

[App page](https://appshunter.io/ios/app/papercrush/id6745439518)

Discover and organize academic papers with a swipe-based interface. AI translation helps overcome language barriers, while trending sections highlight popular research. Tailor your feed to specific academic categories.

**Highlights:** Swipe interface for paper discovery, AI translation of titles and abstracts, Organize liked papers, View trending research, Detailed paper view with LaTeX support, Select custom academic categories

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

**In-app purchases:** none


## Frequently asked questions

### Is GuiKey free?

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

### Is PaperCrush free?

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

### Do GuiKey or PaperCrush have ads?

PaperCrush shows ads; GuiKey does not.

### Which is updated more often, GuiKey or PaperCrush?

GuiKey ships an update every 5 months, and PaperCrush daily. Most recently, GuiKey was updated on November 8, 2026 and PaperCrush on November 5, 2026.

---

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