Comparison

Dynamic Volumetric Method vs Arrowat Encryptor

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

Head to head
About

Dynamic Volumetric Method

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This app is designed for both iPhone and iPad. This application uses the basic calculations of the "Dynamic Volumetric" method to control oil wells after the occurrence of kick during drilling operations on floating units (semi-submersible platform and drill-ship). It is an useful tool to import data files to fill kill sheets from our apps: (Driling Hydraulics, Drilling Simulator, Kick Tolerance, LOT Simulator and Well Control Simulator) available for sale in our portfolio on the App Store. It is can be applied on the field and also help in the understanding of the "Dynamic Volumetric" method for well control. 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. Thanks 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.

About

Arrowat Encryptor

Features
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Encrypt important text that can only be read by the people who has the decryptor key you share with or can be decrypted just by yourself. Arrowat Encryptor provides the way to save the encrypted content to file with a separated encrypted key that is used to decrypt the content, you can share the encrypted file and provide the secret key to allow others to read it, most important is keep content secret from others, use it for secure your letters, numbers and any text you want to keep secret. Learn how to use the app at https://arrowat.net/arrowatencryptor/docs/encrypt-and-decrypt-text

Screenshots

Dynamic Volumetric Method4 screens
Arrowat Encryptor4 screens

Verdict

The call

The clearest difference is price: Arrowat Encryptor at Free against Dynamic Volumetric Method's $19.99. Arrowat Encryptor also leads on iOS requirement (8.0 vs 10.2). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Arrowat Encryptor is free to download; Dynamic Volumetric Method costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Dynamic Volumetric Method ships an update every 38 months, Arrowat Encryptor every 25 months. The most recent releases landed on September 18, 2026 and September 29, 2026 respectively.

Scorecard2 real differences ยท 4 level
Dynamic Volumetric Method versus Arrowat Encryptor: the parameters behind the verdict, then further details
ParameterDynamic Volumetric MethodArrowat Encryptor
Price$19.99Free โ€” better
Update frequencyEvery 38 monthsEvery 25 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.28.0 โ€” better
Further details โ€” not scored
Size17 MB32 MB
Age rating4+4+
DeveloperCarlos MouraArrowat LLC

In-app purchases

None

Dynamic Volumetric Method

No in-app purchases

None

Arrowat Encryptor

No in-app purchases

Questions

Is Dynamic Volumetric Method free?
Dynamic Volumetric Method costs $19.99, with no in-app purchases.
Is Arrowat Encryptor free?
Arrowat Encryptor is free to download, with no in-app purchases.
Do Dynamic Volumetric Method or Arrowat Encryptor have ads?
Neither Dynamic Volumetric Method nor Arrowat Encryptor shows ads.
Which is updated more often, Dynamic Volumetric Method or Arrowat Encryptor?
Dynamic Volumetric Method ships an update every 38 months, and Arrowat Encryptor every 25 months. Most recently, Dynamic Volumetric Method was updated on September 18, 2026 and Arrowat Encryptor on September 29, 2026.

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