Dyna vs my9xx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dyna
Explore and search detailed specifications for motor power sections, rotors, and stators. Find the ideal drilling solution by filtering based on tool size, lobes, stages, and revolutions per gallon. Save favorites and connect with experts.
- Browse power section spec sheets
- Search by tool size, lobes, stages, and RPM
- Identify optimal drilling solutions
- Save commonly used spec sheets
- Connect with regional experts
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Dyna-Drill offers a broad range of motor power sections, rotors, and stators that are designed and manufactured to withstand the most demanding drilling applications. The Dyna-Drill Power Sections app enables you to browse and search power section spec sheets to identify the best solution for your specific needs. You can search by tool size, number of lobes, stages, and revolutions per gallon to ensure you have the right technology for your application. The app also enables you to save your most commonly used spec sheets under the “Favorites" tab for easy access. In addition, by using the “Contact” button, you will be able to connect with a Dyna-Drill expert in your region.
my9xx
This app aggregates Porsche 911 listings from multiple countries and platforms, allowing users to search, analyze, compare, and find their desired vehicle. It provides market insights to aid in confident purchasing decisions.
- Search across multiple marketplaces
- Analyze car listings
- Compare with market data
- Contact sellers directly
- Market insights for buying decisions
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To all Porsche 911 enthusiasts: Introducing the my9xx.app. We gather data from 8 countries. From many different platforms. We clean, sort, and store the data. And we make it accessible to you longer than the original portals. That means you can: SEARCH (in just one interface through the most popular marketplaces), FIND (ads with an easy-to-use search engine created specifically for 911s), ANALYZE (cars, even if they are no longer online on their source), COMPARE (with the overall market or with other selected listings), and BUY (your desired driving machine by contacting sellers on its original platform). Use our tool to get a clear sense of the market and make a confident buying decision. Download now and start to play. Find your favorite toy. my9xx.app Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.digitalmarketservices.de/datenschutz
Screenshots
Verdict
The clearest difference is review sentiment: my9xx at 100% against Dyna's 0%. my9xx also leads on update cadence (every 2 weeks vs every 19 months). Dyna's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases and device support 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.
Dyna ships an update every 19 months, my9xx every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Dyna | my9xx |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 19 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Schlumberger Technology Corporation | Digital Market Services GmbH |
Customer experience
Dyna
my9xx
In-app purchases
Dyna
No in-app purchases
my9xx
No in-app purchases









