# SPS vs GoodReader PDF Editor & Viewer

The clearest difference is review sentiment: GoodReader PDF Editor & Viewer at 69% against SPS's 0%. GoodReader PDF Editor & Viewer also leads on update cadence (weekly vs every 3 months) and ratings volume (14K vs 6). SPS's advantage is price (Free vs $6.99) and in-app purchases (none vs 4). On ads and device support there is nothing between them.

SPS is free to download; GoodReader PDF Editor & Viewer costs $6.99 up front. GoodReader PDF Editor & Viewer sells 4 in-app purchases, starting at $3.99 per month. SPS asks for nothing beyond the download.

SPS holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: GoodReader PDF Editor & Viewer has 14K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 0% of SPS's written reviews are positive against 69% of GoodReader PDF Editor & Viewer's, so the app with the better star average is not the one people write more warmly about.

SPS ships an update every 3 months, GoodReader PDF Editor & Viewer weekly. The most recent releases landed on November 1, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | SPS | GoodReader PDF Editor & Viewer |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/sps-atr-aircraft-performance/id726928327/reviews)** | [4.7 (14K ratings)](https://appshunter.io/ios/app/goodreader-pdf-editor-and-viewer/id777310222/reviews) |
| Number of ratings | 6 | **14K** |
| Positive reviews | 0.0% of reviews | **68.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#77** |
| Size | 24 MB | 53 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ATR TRAINING CENTER](https://appshunter.io/developer/726928330) | [Good.iWare, Inc.](https://appshunter.io/developer/289191291) |

## What reviewers say

### SPS

[App page](https://appshunter.io/ios/app/sps-atr-aircraft-performance/id726928327)

This app provides pilots with quick access to takeoff and landing data, along with weight and balance calculations. It aims to increase pilot autonomy and accuracy, especially during unexpected events, while also offering a paperless solution for onboard operations.

**Highlights:** Takeoff and landing data cards, Weight and balance computations, MEL item assistance, En-route failure support, NOTAM and LMC assistance, Paperless onboard solution

**Features:** macOS Compatibility

**In-app purchases:** none


### GoodReader PDF Editor & Viewer

[App page](https://appshunter.io/ios/app/goodreader-pdf-editor-and-viewer/id777310222)

**Currently charting:** #77 Top Paid · Productivity (US App Store)

This app offers robust PDF editing and viewing capabilities, alongside comprehensive file management tools. It allows users to annotate PDFs, manage files from various cloud services, and secure sensitive data with advanced encryption. Enjoy a superior reading experience with features like PDF Reflow and split-screen viewing.

**Highlights:** PDF annotation and editing, Extensive file format support, Cloud service integration (Dropbox, Google Drive, etc.), AES-256 military-grade encryption, Split-screen viewing for iPad, File management and organization

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Pack (monthly) | $3.99 | per month |
| Pro Pack (annual) | $24.99 | per year |
| Auto Sync | $59.99 | one-time |
| Pro Pack | $89.99 | one-time |

**What reviewers like**

- 🚀 Excellent for reading and annotating PDFs
- 📚 Powerful file management and organization
- 💻 Seamless integration with cloud storage
- 🎨 Customizable reading experience
- ⚙️ Robust set of features and capabilities

**What reviewers complain about**

- 🔒 Subscription model for some features
- 🔀 Cluttered interface after recent update
- 🐛 Occasional crashes and stability issues
- 📁 Difficulty migrating files from older versions
- 🖌️ Lacking palm rejection and customizable Apple Pencil controls

**Reported bugs**

- Syncing issues with cloud storage providers
- Compatibility problems with newer iOS versions
- Inconsistent behavior when switching between apps

**Requested features**

- Continuous scrolling for better reading experience
- Improved search functionality with advanced filters
- Ability to set custom color schemes and themes
- Enhanced support for ebook formats like EPUB
- Streamlined annotation tools and workflow


## Frequently asked questions

### Is SPS free?

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

### Is GoodReader PDF Editor & Viewer free?

GoodReader PDF Editor & Viewer costs $6.99, and also offers in-app purchases.

### Which has better reviews, SPS or GoodReader PDF Editor & Viewer?

SPS is rated higher. SPS averages 5.0 out of 5 from 6 ratings, while GoodReader PDF Editor & Viewer averages 4.7 from 14K ratings.

### Do SPS or GoodReader PDF Editor & Viewer have ads?

Neither SPS nor GoodReader PDF Editor & Viewer shows ads.

### Which is updated more often, SPS or GoodReader PDF Editor & Viewer?

SPS ships an update every 3 months, and GoodReader PDF Editor & Viewer weekly. Most recently, SPS was updated on November 1, 2026 and GoodReader PDF Editor & Viewer on November 12, 2026.

---

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