Directional Drilling vs Learn Khmer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Directional Drilling
This application provides essential tools for oil and gas directional drilling. It aids in well planning, survey data management, and 3D plotting. Users can import and export data, perform various calculations, and visualize well paths.
- Well planning with multiple sections
- Import/export survey data
- Multiple calculation methods
- 2D and 3D well plotting
- Support for length units (foot/meter)
- Multilateral well plotting
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The Directional Drilling provides the useful tools for the drilling of oil wells with well planning, survey data, multilateral wells, plotting in vertical section, plan view and in X-Y-Z (3D), easy tools to create 2D wells and also to calculate 3D sections, calculations between two survey stations and formulas. This app is designed for both iPhone and iPad. You can download it on your iPhone and also on your iPad. The well planning and survey stations can also be imported from CSV text files, for example: "MD","INC","AZI","TVD","N/S","E/W" "1000.0","0.0","0.0","1000.0","0.0","0.0" "1100.0","3.0","10.0" "1200.0","6.0","15.0" ... The values can be "quoted" or unquoted and separated by: - Comma: 1.00,2.00,3.00 - Semicolon: 1.00;2.00;3.00 or 1,00;2,00;3,00 - Tab: 1.00 2.00 3.00 (TSV file) - Space: 1.00 2.00 3.00 Please, before you buy, make sure this app will be useful to you. Visit our website at www.wellcontrol.com.br and check the "User Guide". This app was developed based on existing spreadsheets. There is no comparison with any other software. Our goal was to create a low-cost application with the help of experts to share with drilling engineers, technicians, drillers, students and teachers of drilling engineering. There is no intention to replace the professional softwares. You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and spreading it to your friends. Features: 1. Well Planning with Multiple Sections (Minimum Curvature); 2. Ability to work with data files; 3. Directional Survey: Edit, Add, Insert and Remove Survey Data; 4. Calculations Methods: - Tangential - Balanced Tangential - Minimum Curvature (default) - Radius of Curvature - Angle Averaging 5. Print Reports; 6. Survey Data Calculations in 5 methods; 7. Formulas of the Methods; 8. Ability to work with length units: foot and meter (metre); 9. Vertical Section View, Plan View and X-Y-Z plotting. 10. Ability to Multilateral wells plotting limited to 6 wells. 11. Easy tool to create 2D Wells (Type I, II and Horizontal). 12. Easy tool to calculate 3D sections on well planning. 13. Sharing data files via email, iCloud and iTunes. 14. Import Well Planning (MD,Inclination,Azimuth) from CSV text format file; 15. Export Well Planning (MD,Inclination,Azimuth,Quadrant,TVD,HD,VSection,N/S,E/W,DLS,BUR,TRN) to CSV text format file; 16. Import Survey Data from CSV text format file; 17. Export Survey Table to CSV text format file; 18. Sharing data files with iPad, iPhone and iPod Touch via iCloud, iCloud Drive, AirDrop or email. 19. Well Planning Interpolations; 20. Ability to get a simulated survey (steps 10m, 30m, 100m or 100ft) from Well Planning interpolations; User Guide: Download at http://www.wellcontrol.com.br DISCLAIMER: These tools & materials are provided 'as is' without warranties of any kind, express or implied. Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools. Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk.
Learn Khmer
Master Khmer with practical phrases and real-life conversations. This app offers synchronized audio and text, smart memorization tools, and structured lessons to build speaking confidence for travelers and beginners.
- Audio + text synchronization
- Practical phrasebook lessons
- Flashcards for memorization
- Favorites for personalized learning
- 100+ structured learning topics
- 2000+ useful phrases
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Learn Khmer with confidence using a practical, modern learning experience designed for real-life communication. Learn Khmer β Lentil helps you quickly build speaking skills through synchronized audio and text, structured phrase-based lessons, and smart memorization tools. Whether youβre starting from zero, preparing for travel to Cambodia, or looking to connect with Khmer speakers, this Khmer learning app makes it easy to understand, practice, and speak naturally from day one. Instead of overwhelming you with complex grammar rules, the app focuses on useful Khmer phrases, clear pronunciation, and everyday conversations. Listen to native-quality Khmer audio, read along with perfectly matched text, and repeat at your own pace. This immersive audio-text method strengthens listening, reading, and speaking together, helping you learn faster and retain Khmer vocabulary more effectively. Key features: β’ Audio + text synchronization for immersive learning Follow spoken Khmer with precisely timed on-screen text. This powerful listening-reading approach improves pronunciation, comprehension, and speaking confidence so you can speak Khmer more naturally. β’ Practical phrasebook-based lessons Learn essential Khmer phrases organized by real-life situations such as greetings, introductions, transportation, hotels, restaurants, shopping, and daily conversations. Focus on language you will actually use. β’ Flashcards for fast memorization Strengthen your Khmer vocabulary and expressions with simple, effective Khmer flashcards designed to boost recall and support long-term retention. β’ Favorites to personalize your learning Save important Khmer phrases and words to your favorites list for quick access and focused revision whenever you need it. β’ 100+ structured learning topics Progress through a wide range of carefully organized topics that guide you step by step from beginner basics to confident everyday Khmer communication. β’ 2000+ useful phrases and expressions Build a strong foundation with a large collection of practical Khmer phrases suitable for beginners, travelers, and daily use. β’ Designed for beginners and travelers Start learning Khmer with no prior experience. Perfect for visiting Cambodia, communicating with locals, preparing for relocation, or expanding your language skills for personal or professional goals. Use Learn Khmer β Lentil during your commute, in short daily study sessions, or while preparing for real conversations. Practice with Khmer audio lessons, reinforce reading through synchronized text, and gain confidence speaking with ready-to-use phrases you can apply immediately. If you want a clean, focused, and effective way to learn Khmer at your own pace, Learn Khmer β Lentil provides a premium learning experience that keeps you motivated and progressing steadily. Start today and discover how simple and enjoyable it can be to learn Khmer and communicate with confidence in real-life situations. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.myapp.page/privacy-policy
Screenshots
Verdict
The clearest difference is price: Learn Khmer at Free against Directional Drilling's $29.99. Learn Khmer also leads on update cadence (every 4 months vs every 8 months). Directional Drilling's advantage is in-app purchases (none vs 3) and ads (none vs shown). On review sentiment and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Learn Khmer is free to download; Directional Drilling costs $29.99 up front. Learn Khmer sells 3 in-app purchases, starting at $4.99 per 7 days. Directional Drilling asks for nothing beyond the download.
Directional Drilling ships an update every 8 months, Learn Khmer every 4 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Directional Drilling | Learn Khmer |
|---|---|---|
| Price | $29.99 | Free β better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Update frequency | Every 8 months | Every 4 months β better |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Monetization | Paid | Free with in-app purchases β better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 21 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlos Moura | Atech Consultancy Ltd |
Customer experience
Directional Drilling
Learn Khmer
In-app purchases
Directional Drilling
No in-app purchases
Learn Khmer
- Weekly Subscription$4.997 Days
- Yearly Subscription$24.991 Year
- Lifetime Premium$29.99
Questions
Is Directional Drilling free?
Is Learn Khmer free?
Do Directional Drilling or Learn Khmer have ads?
Which is updated more often, Directional Drilling or Learn Khmer?
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