Volumetric Method Simulator vs Colnn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Volumetric Method Simulator
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This is a basic well control simulator for training in Oil & Gas that simulates the control applying the Volumetric Method (and Lubricate and Bleed Method) after the kick detection during stripping out the drillstring on the drilling operations in the oil well. This is a project also based on app "Kick Game 2" available in our portfolio like the Driller's Method Simulator and Wait and Weight Method Simulator. Like these apps, just surface parameters are displayed. Features: 1. Interface based on Hydraulic Choke Panel. 2. Graph in full screen (with background color in black or white) for analysis. 3. Pre-recorded data sheet 4. Well Design with Casing + Open Hole without the Drillstring in the Wellbore. 6. Full features version with pause and digital gauges. 7. Method with Step by Step procedure to turn the exercise easy to practice. Please, check for well control applications in our portfolio on the App Store. Visite our website for links. Please, you can contribute for improvements. Report bugs and suggestions to contact@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.
Colnn
Stay connected with your school, track academic progress, and manage school-related information. Students can view timetables, homework, and grades, while parents can monitor financial data and communicate with the administration.
- Classroom timetable viewing
- Homework and assignment tracking
- Digital library access
- School news updates
- Attendance monitoring
- Exam details and results
- Financial data for parents
- Direct communication with school administration
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Whether you are a student or parent, you can keep connected to school, follow-up new feedback and work progress, wherever and wherever you are For students - See your classroom Timetable - Follow recent updated homework - Get recent uploaded books or videos from digital library - Keep yourself updated with school news - Know your attendance all over the year - Get exams details & results directly to your mobile For parents Follow up all your child previous activities in addition to: - Financial data e.g. fees, installments, payments…etc. - Contact box enables you to communicate directly with school administration
Screenshots
Verdict
The clearest difference is price: Colnn at Free against Volumetric Method Simulator's $19.99. Colnn also leads on update cadence (every 4 weeks vs every 26 months). On ads, in-app purchases, device support and iOS requirement 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
Colnn is free to download; Volumetric Method Simulator costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Volumetric Method Simulator ships an update every 26 months, Colnn every 4 weeks. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.
| Parameter | Volumetric Method Simulator | Colnn |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | — | 1.9 (20 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 20 — better |
| Update frequency | Every 26 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 20 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Carlos Moura | Tamer Badawy |
In-app purchases
Volumetric Method Simulator
No in-app purchases
Colnn
No in-app purchases
Questions
Is Volumetric Method Simulator free?
Is Colnn free?
Do Volumetric Method Simulator or Colnn have ads?
Which is updated more often, Volumetric Method Simulator or Colnn?
Other comparisons
