DNJ Catalog vs ShieldX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DNJ Catalog
Access a comprehensive catalog of quality engine parts for all cars and trucks. This app provides listings of all engines, trusted by engine rebuilders globally.
- Comprehensive engine parts catalog
- Listings for all engines
- Trusted by engine rebuilders
- Covers all cars and trucks
- 30+ years of experience
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DNJ Catalog, DNJ with over 30 years of experience, has become a full line provider of Quality Engine Parts for all cars and trucks, and offers listings of all engines. DNJ is the brand trusted by Engine Rebuilders all over the world.
ShieldX
Block ads, crypto miners, and trackers to enhance your browsing speed and security. Enjoy a cleaner, faster, and more private online experience with automatic updates and customizable protection.
- Automatic adblock updates
- Crypto mining protection
- Banner hiding
- Tracker limiting
- Freemium and premium versions
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Stay in control of your browsing with ShieldX: Privacy — a smart content blocker designed to keep your web clean, fast, and secure. Key Features: • Adblock with auto-update – rules are updated automatically to keep protection effective. • Crypto mining protection – stops hidden scripts that can slow down your device. • Banner hiding – removes intrusive elements for a distraction-free experience. • Tracker limiting – reduces online tracking to protect your personal data. Freemium version – Includes automatic updates Premium version – Unlocks additional rules Links: Terms of use: https://shield-ex.net/terms Privacy policy: https://shield-ex.net/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: DNJ Catalog at none against ShieldX's 2. DNJ Catalog also leads on rating (4.7 vs 4.3) and device support (3 vs 1). ShieldX's advantage is update cadence (every 3 days vs every 47 months) and ratings volume (356 vs 3). On price and ads 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. ShieldX sells 2 in-app purchases, starting at $9.99 per 7 days. DNJ Catalog asks for nothing beyond the download.
DNJ Catalog holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: ShieldX has 356 ratings behind it against 3, so its average is the more settled of the two.
DNJ Catalog ships an update every 47 months, ShieldX every 3 days. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | DNJ Catalog | ShieldX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3 ratings) — better | 4.3 (356 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 | 356 — better |
| Update frequency | Every 47 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 47 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | DNJ Engine Components, Inc. | Artur Lysenko |
Customer experience
DNJ Catalog
ShieldX
In-app purchases
DNJ Catalog
No in-app purchases
ShieldX
- Weekly Subscription3 Days trial$9.997 Days
- Lifetime Access$0.99
