Kegel Pattern Library vs DiagonalOBDII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kegel Pattern Library
Browse and view bowling lane patterns directly from your mobile device. Transmit these patterns to compatible Kegel Lane Machines wirelessly. Requires specific hardware for pattern transmission.
- Browse lane patterns
- View lane patterns
- Transmit patterns wirelessly
- Compatible with specific Kegel machines
- Mobile pattern management
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Introducing the Kegel Pattern Library! Browse and view lane patterns and transmit them to your compatible Kegel Lane Machine right from your phone or tablet! NOTE: You must have a compatible lane machine (IKON, IKON Walker, Flex, Flex Walker) with the Wi-Fi connectivity kit installed and configured in order to transmit patterns.
DiagonalOBDII
This app helps mechanics perform vehicle drive cycles more efficiently. It provides real-time monitoring of emissions monitors and diagnostic trouble codes (DTCs), offering clear guidance and instant explanations to ensure vehicles pass inspection quickly and accurately.
- Live drive cycle monitoring
- Immediate diagnostic trouble code (DTC) identification
- Real-time emissions monitor status
- Precise drive cycle parameter guidance
- Professional, easy-to-navigate dashboard
- Instant code explanations
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Diagonal is designed specifically for mechanics who want to simplify and speed up vehicle drive cycles. Instantly track emissions monitors and diagnostic trouble codes (DTCs) live, ensuring accurate diagnostics and rapid vehicle readiness for inspection. Key Features: -Live Drive Cycle Monitoring: Clearly see the real-time status of emissions monitors as they run, complete, or require further action during your drive. -Immediate Diagnostics: Quickly identify and address active trouble codes (DTCs) as they appear, eliminating uncertainty during drive cycles. -Efficiency and Accuracy: Avoid unnecessary repeat drive cycles by verifying real-time monitor completion, ensuring vehicles pass inspection on the first try. -Precise Drive Cycle Guidance: Monitor essential drive cycle parameters such as speed, RPM, engine temperature, and throttle position to meet exact diagnostic requirements. -Professional Dashboard: Access all critical information quickly through a clear, easy-to-navigate interface tailored for automotive professionals. -Instant Code Explanations: Quickly interpret trouble codes with straightforward, mechanic-friendly explanations. Why Mechanics Trust Diagonal: -Saves Valuable Time: Complete diagnostic drive cycles accurately the first time. -Faster Inspections: Immediately identify vehicle readiness to streamline your workflow. -Reduces Diagnostic Uncertainty: Clear, actionable data presented in real-time. -Diagonal empowers professional technicians with the tools to perform diagnostics faster and more efficiently than ever before. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://diagonal-d070c.web.app/privacy.html
Screenshots
Verdict
The clearest difference is rating: DiagonalOBDII at 5.0 against Kegel Pattern Library's 2.6. DiagonalOBDII also leads on update cadence (every 2 weeks vs every 5 months). Kegel Pattern Library's advantage is in-app purchases (none vs 4) and review sentiment (25% vs 0%). 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. DiagonalOBDII sells 4 in-app purchases, starting at $12.99 per month. Kegel Pattern Library asks for nothing beyond the download.
DiagonalOBDII holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Kegel Pattern Library has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 25% of Kegel Pattern Library's written reviews are positive against 0% of DiagonalOBDII's, so the app with the better star average is not the one people write more warmly about.
Kegel Pattern Library ships an update every 5 months, DiagonalOBDII every 2 weeks. The most recent releases landed on June 1, 2026 and August 22, 2026 respectively.
| Parameter | Kegel Pattern Library | DiagonalOBDII |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.1 |
| Further details — not scored | ||
| Size | 143 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Kegel LLC | Kyle Louderback |
Customer experience
Kegel Pattern Library
DiagonalOBDII
In-app purchases
Kegel Pattern Library
No in-app purchases
DiagonalOBDII
- Diagonal Premium Monthly$12.991 Month
- Diagonal Premium Trial1 Month trial$12.991 Month
- Shop Owner - Monthly$17.991 Month
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- Diagonal Premium Yearly$99.991 Year
