Comparison

Directional Survey Methods vs DR Chemical

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Directional Survey Methods

Features
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This application uses the formulas to calculate the survey parameters (diff of TVD, N/S, E/W, DLS) between two stations of the methods: 1. Tangential 2. Balanced Tangential 3. Minimum Curvature 4. Radius of Curvature 5. Angle Averaging Also available the formulas of the methods. This app was developed based in existing spreadsheets. There is no comparison with any other software. You can contribute with suggestions for improvements, reporting bugs and spreading it to your friends. Our portfolio for Directional Drilling available on the App Store: - "Directional Drilling" a complete app (building and plotting) with well planning, survey, multi-lateral, etc. - There are also stand-alone applications for Well Planning, Well Survey and Multi-Lateral Wells. - "3D Interpolation" to calculate a survey data between two stations. 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 your own risk. Thanks

About

DR Chemical

This reference guide provides essential information, formulas, and calculators for HDD, mining, and water well drilling professionals. It simplifies job tasks, enhancing efficiency and safety by offering easy access to product details and calculations.

Highlights
  • DrillRite Chem product information
  • Reference materials
  • Calculators for drilling crews
  • HDD, mining, and water well drilling focus
  • Job efficiency and safety enhancement
Read full description

A reference guide app that shows DrillRite Chem products, reference materials, and calculators that HDD, mining, and water well drilling crews need to do their jobs easier, faster, and safer.

Screenshots

Directional Survey Methods4 screens
DR Chemical4 screens

Verdict

The call

The clearest difference is update cadence: DR Chemical at every 2 weeks against Directional Survey Methods's every 50 months. Directional Survey Methods's advantage is iOS requirement (12.0 vs 16.6). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Directional Survey Methods ships an update every 50 months, DR Chemical every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 7 level
Directional Survey Methods versus DR Chemical: the parameters behind the verdict, then further details
ParameterDirectional Survey MethodsDR Chemical
PriceFreeFree
Rating—4.7 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 50 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.6
Further details — not scored
Size7 MB36 MB
Age rating4+4+
DeveloperCarlos MouraGROUP M7, INC.

In-app purchases

None

Directional Survey Methods

No in-app purchases

None

DR Chemical

No in-app purchases

Questions

Is Directional Survey Methods free?
Directional Survey Methods is free to download, with no in-app purchases.
Is DR Chemical free?
DR Chemical is free to download, with no in-app purchases.
Do Directional Survey Methods or DR Chemical have ads?
Neither Directional Survey Methods nor DR Chemical shows ads.
Which is updated more often, Directional Survey Methods or DR Chemical?
Directional Survey Methods ships an update every 50 months, and DR Chemical every 2 weeks. Most recently, Directional Survey Methods was updated on November 2, 2026 and DR Chemical on November 3, 2026.

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