Oil vs PostgreSQL Commander
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oil
This app calculates essential physical properties for crude oil, natural gas, and various liquids like water and glycols. It offers multiple empirical correlations for accurate calculations, supporting a wide range of parameters for both liquid and gas phases.
- Calculates properties for crude oil, natural gas, and liquids
- Supports density, viscosity, thermal conductivity, and more
- Offers multiple empirical correlations for crude oil
- Provides options for water property calculations
- Calculates gas compressibility factor (Z-factor)
- Includes pseudo critical and reduced properties
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Oil-Gas Properties calculates physical properties for Crude Oil and other liquids (Water, Methanol (MeOH) and Glycols (MEG, DEG and TEG) and Natural Gas, Air and Nitrogen. Liquid properties: - API gravity (Crude Oil only) - Molecular weight - Density - Viscosity - Thermal compressibility - Thermal conductivity - Specific heat capacity - Surface tension - Bubble point pressure - Solution Gas-Oil-Ratio (oil and water) - Formation Volume Factor (oil and water) - Pseudo Critical properties - Pseudo Reduced properties For crude oil the user can select different empirical correlations for density, viscosity, formation volume factor (which also determines method for calculating bubble point pressure and solution gas-oil ratio) and surface tension. For water, different options are available for calculating solution-gas-water ratio, water viscosity and formation volume factor water. Gas properties: - Compressibility factor (Z-factor - gas deviation factor) - Molecular weight - Density - Viscosity - Thermal compressibility - Thermal conductivity - Specific heat capacity - Ideal heat capacity ratio, Cp/Cv - Real isentropic coefficient, k - Gas formation volume factor (natural gas only) - Pseudo Critical properties - Pseudo Reduced properties For natural gas the choice of method for calculating Z-factor (compressibility factor) also determines method for calculating isothermal compressibility, formation volume factor, specific heat capacity and isentropic coefficient (ideal and real). For air and nitrogen the Redlich-Kwong equation of state is used.
PostgreSQL Commander
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Powerful PostgreSQL client for iPhone Great SQL query editor with syntax highlighting and fast query editing Queries are saved across devices using iCloud Work with and see multiple SQL queries and results at the same time. You get to set how much space each query should have on the screen. Helps you generate advanced queries, but always lets you review before you execute them. Save favorite queries for later. And when you close PostgreSQL Commander and later reopen it, your queries are exactly where you left them, ready to be replayed Open connections to different (or even the same) instance using multiple windows in split view Full SSH support - Authenticate either with certificates or passwords - Connect to either the database host you're tunnelling too, or to a database on a remote host the tunnel gives you access to Browse query results like you do in a spreadsheet Export data as CSV, XML and JSON to your favorite apps such as Apple Numbers or Microsoft Excel. Both light- and dark-mode support. Respects your text size preferences via Dynamic Text Try out PostgreSQL Commander with the demo database, and when you are ready to use it with your own database, you can choose between unlocking it for the lifetime of the application, or a yearly subscription For full terms please go to: http://www.saers.com/dbclient/eula/
Screenshots
Verdict
The clearest difference is price: PostgreSQL Commander at Free against Oil's $0.99. PostgreSQL Commander also leads on iOS requirement (13.0 vs 15.6). Oil's advantage is in-app purchases (none vs 2). On ads 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
PostgreSQL Commander is free to download; Oil costs $0.99 up front. PostgreSQL Commander sells 2 in-app purchases, starting at $3.49 per year. Oil asks for nothing beyond the download.
| Parameter | Oil | PostgreSQL Commander |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 7 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | Bjarne Berge | Niklas Saers |
In-app purchases
Oil
No in-app purchases
PostgreSQL Commander
- Yearly Subscription3 Days trial$3.491 Year
- Lifetime purchase$5.99
Questions
Is Oil free?
Is PostgreSQL Commander free?
Do Oil or PostgreSQL Commander have ads?
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