API 570 Highlights Practices vs FileOpen PDF Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
API 570 Highlights Practices
This free version offers a glimpse into piping inspection practices and exam questions. The full version provides over 1000 questions covering all sections of the API 570 Test.
- Practice questions
- Exam simulations
- Covers API 570 test sections
- Free version available
- Full version with 1000+ questions
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This Free version only has several practices and exams questions to show you the general view of the app. The full Exams version includes more than 1000 questions that cover the whole sections of API 570 Test
FileOpen PDF Viewer
This application allows users to view PDFs that have been encrypted using FileOpen technology on their Apple devices. It provides a straightforward way to access secure documents on iPhones and iPads.
- View FileOpen encrypted PDFs
- Supports Apple devices
- Simple document access
- Secure PDF viewing
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View FileOpen encrypted PDFs on your Apple device.
Screenshots
Verdict
The clearest difference is rating: API 570 Highlights Practices at 5.0 against FileOpen PDF Viewer's 1.0. API 570 Highlights Practices also leads on update cadence (every 2 months vs every 10 months) and iOS requirement (9.1 vs 11). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
API 570 Highlights Practices holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
API 570 Highlights Practices ships an update every 2 months, FileOpen PDF Viewer every 10 months. The most recent releases landed on September 29, 2026 and June 4, 2026 respectively.
| Parameter | API 570 Highlights Practices | FileOpen PDF Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | — | 12.5% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 11 |
| Further details — not scored | ||
| Size | 16 MB | 120 MB |
| Age rating | 4+ | 4+ |
| Developer | Nguyen Hieu | FileOpen Systems Inc. |
Customer experience
API 570 Highlights Practices
FileOpen PDF Viewer
In-app purchases
API 570 Highlights Practices
No in-app purchases
FileOpen PDF Viewer
No in-app purchases
Questions
Is API 570 Highlights Practices free?
Is FileOpen PDF Viewer free?
Which has better reviews, API 570 Highlights Practices or FileOpen PDF Viewer?
Do API 570 Highlights Practices or FileOpen PDF Viewer have ads?
Which is updated more often, API 570 Highlights Practices or FileOpen PDF Viewer?
Other comparisons
