GeoFieldBook vs Directional Drilling
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GeoFieldBook
This app digitizes geological field mapping, replacing paper notebooks. It uses the iPad's GPS and camera to log structural and formation data, link images, and display real-time maps with oriented strikes and dips. Data can be exported for analysis.
- Digital field notebook
- GPS-enabled data logging
- Image linking to records
- Real-time map display
- Export data in CSV format
- Import existing datasets
Read full descriptionHide full description
GeoFieldBook is designed for use in structural geology field mapping projects as a complement or replacement for the traditional paper field notebook and maps. The App integrates the iPad's GPS, camera, data management and mapping capabilities to allow geologists to record structural and formation information, automatically log geo-located data, link images to each record and input pre-defined formation names for different mapping areas. The records are then displayed in real-time on an image base (Apple) with strikes and dips displayed in the correct orientation and color-coded to the formation list. Field measurements and notes can be exported in csv format for integration into analysis software. Existing data sets (records and formation lists) can also be imported into the App. Record types currently supported (more are coming): - Bedding - Contacts - Faults - Joints - Other (generic entries) - Up to five additional user-defined record types with five additional fields per record. Depending upon the record type selected, inputs include: - Name (your entry) - Location (auto recorded) - Time/date (auto recorded) - Dip amount and direction (from your measurements) - Formations (scroll wheel entry) - Notes (your entry) - Five additional user-defined input fields
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
Read full descriptionHide full description
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.
Screenshots
Verdict
The clearest difference is price: GeoFieldBook at Free against Directional Drilling's $29.99. Directional Drilling's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 14.5). On review sentiment, update cadence, 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
GeoFieldBook is free to download; Directional Drilling costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GeoFieldBook ships an update every 14 months, Directional Drilling every 8 months. The most recent releases landed on September 28, 2026 and October 2, 2026 respectively.
| Parameter | GeoFieldBook | Directional Drilling |
|---|---|---|
| Price | Free — better | $29.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 14 months | Every 8 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Lafayette | Carlos Moura |
Customer experience
GeoFieldBook
Directional Drilling
In-app purchases
GeoFieldBook
No in-app purchases
Directional Drilling
No in-app purchases
Questions
Is GeoFieldBook free?
Is Directional Drilling free?
Do GeoFieldBook or Directional Drilling have ads?
Which is updated more often, GeoFieldBook or Directional Drilling?
Other comparisons



![GST[AR] GST[AR]](https://cdn3.appshunter.io/i/Purple221/684d79799080d1e874f2bd30711bebcc/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/512x0w.png)











