# Paperpile vs Kumo Countdown Timer

The clearest difference is price: Paperpile at Free against Kumo Countdown Timer's $2.99. Paperpile also leads on ratings volume (129 vs 4) and device support (3 vs 1). Kumo Countdown Timer's advantage is rating (5.0 vs 4.5) and update cadence (weekly vs every 2 months). On ads and in-app purchases there is nothing between them.

Paperpile is free to download; Kumo Countdown Timer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kumo Countdown Timer holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Paperpile has 129 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 72% of Paperpile's written reviews are positive against 100% of Kumo Countdown Timer's.

Paperpile ships an update every 2 months, Kumo Countdown Timer weekly. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Paperpile | Kumo Countdown Timer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.5 (129 ratings)](https://appshunter.io/ios/app/paperpile/id1187562736/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/kumo-countdown-timer/id6803194734/reviews)** |
| Number of ratings | **129** | 4 |
| Positive reviews | 71.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Paid |
| Size | 242 MB | 2 MB |
| Requires iOS | **12.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Paperpile LLC](https://appshunter.io/developer/1187562735) | [Tiny Tools Studio LLC](https://appshunter.io/developer/939071173) |

## 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


### Kumo Countdown Timer

[App page](https://appshunter.io/ios/app/kumo-countdown-timer/id6803194734)

This app visually displays the remaining time until your next scheduled event, helping you manage your focus and avoid being late. It syncs with your existing calendar and shows live countdowns on your lock screen and device.

**Highlights:** Live countdown display, Lock screen widget, Dynamic Island integration, Calendar sync (iCloud, Google, Outlook), Automatic updates from calendar changes, No accounts or subscriptions required

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Paperpile free?

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

### Is Kumo Countdown Timer free?

Kumo Countdown Timer costs $2.99, with no in-app purchases.

### Which has better reviews, Paperpile or Kumo Countdown Timer?

Kumo Countdown Timer is rated higher. Paperpile averages 4.5 out of 5 from 129 ratings, while Kumo Countdown Timer averages 5.0 from 4 ratings.

### Do Paperpile or Kumo Countdown Timer have ads?

Neither Paperpile nor Kumo Countdown Timer shows ads.

### Which is updated more often, Paperpile or Kumo Countdown Timer?

Paperpile ships an update every 2 months, and Kumo Countdown Timer weekly. Most recently, Paperpile was updated on October 6, 2026 and Kumo Countdown Timer on October 4, 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.*