# Panda PDF vs SeaRoll

The clearest difference is update cadence: SeaRoll at every 3 weeks against Panda PDF's every 2 months. Panda PDF's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Panda PDF sells 4 in-app purchases, starting at $9.99 per month and SeaRoll sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Panda PDF ships an update every 2 months, SeaRoll every 3 weeks. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Panda PDF | SeaRoll |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 87 MB | 13 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [维 刘](https://appshunter.io/developer/1724967932) | [Vladyslav Yarmak](https://appshunter.io/developer/1456545549) |

## What reviewers say

### Panda PDF

[App page](https://appshunter.io/ios/app/panda-pdf-reader-and-editor-pdf/id6476367127)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PandaPDF Membership | $9.99 | per month |
| PandaPDF Membership | $19.99 | per 3 months |
| PandaPDF Membership | $59.99 | per year |
| PandaPDF Permanent Membership | $99.99 | one-time |


### SeaRoll

[App page](https://appshunter.io/ios/app/searoll/id6756269783)

This application provides a real-time display of a vessel's rolling angle, allowing users to record and review sessions during navigation. It's designed for simplicity and readability, enabling quick reporting and discussion of roll data.

**Highlights:** Live roll angle display, One-tap roll recording, Playback and review of recorded sessions, Export and share recordings, Simple and readable interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Logo | $0.99 | one-time |


## Frequently asked questions

### Is Panda PDF free?

Panda PDF is free to download, with in-app purchases available.

### Is SeaRoll free?

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

### Do Panda PDF or SeaRoll have ads?

Neither Panda PDF nor SeaRoll shows ads.

### Which is updated more often, Panda PDF or SeaRoll?

Panda PDF ships an update every 2 months, and SeaRoll every 3 weeks. Most recently, Panda PDF was updated on October 6, 2026 and SeaRoll on October 15, 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.*