# Paperpile vs LineEmUp

The clearest difference is price: Paperpile at Free against LineEmUp's $0.99. Paperpile also leads on update cadence (every 2 months vs every 13 months) and iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Paperpile is free to download; LineEmUp costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Paperpile ships an update every 2 months, LineEmUp every 13 months. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Paperpile | LineEmUp |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (131 ratings)](https://appshunter.io/ios/app/paperpile/id1187562736/reviews)** | — |
| Number of ratings | **131** | — |
| Positive reviews | 71.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Free | — |
| Size | 242 MB | 2 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paperpile LLC](https://appshunter.io/developer/1187562735) | [Timothy Kelley](https://appshunter.io/developer/1107488020) |

## What reviewers say

### Paperpile

[App page](https://appshunter.io/ios/app/paperpile/id1187562736)

Organize and manage your research papers effortlessly. Collect, read, and annotate PDFs from millions of academic journals. Beat paper chaos with a tidy digital library.

**Highlights:** Search millions of academic papers, Collect PDFs with one tap, Organize with folders and labels, Read and annotate PDFs, Highlight and add notes, Browser integration for saving

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent reference library management
- 🔄 Seamless cross-device synchronization
- ✍️ Intuitive PDF annotation and highlighting
- 🎨 Clean and minimalist user interface
- 📱 Strong iPad and mobile integration

**What reviewers complain about**

- 🐛 Frequent crashes and instability
- ⏱️ Lack of updates for extended periods
- 📱 Mobile app significantly behind web version features
- 🔋 High battery drain on iPad
- 🌙 No dark mode support

**Reported bugs**

- App crashes frequently on iPad and iOS devices
- Highlighting disappears when revisiting papers
- Overlapping annotations delete together when removing one
- Sync failures requiring logout/login cycles
- Annotations not syncing between iPad and web versions

**Requested features**

- Dark mode implementation
- Edit citation metadata on mobile app
- Change PDF file functionality
- Save to downloads feature
- Dictionary/lookup function for reading


### LineEmUp

[App page](https://appshunter.io/ios/app/lineemup/id1331861470)

**In-app purchases:** none


## Frequently asked questions

### Is Paperpile free?

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

### Is LineEmUp free?

LineEmUp costs $0.99, with no in-app purchases.

### Do Paperpile or LineEmUp have ads?

Neither Paperpile nor LineEmUp shows ads.

### Which is updated more often, Paperpile or LineEmUp?

Paperpile ships an update every 2 months, and LineEmUp every 13 months. Most recently, Paperpile was updated on October 23, 2026 and LineEmUp on October 25, 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.*