Oil density vs ENGINE SFC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oil density
This tool calculates the standard density of oil products based on measured apparent density. It automatically queries density tables and computes volume correction factors for accurate standard volume and mass calculations. Improve efficiency and accuracy compared to manual methods.
- Calculates standard oil density
- Queries petroleum density tables
- Computes volume correction factor (VCF)
- Calculates standard volume and mass
- Adheres to GB/T 1885-1998 national standard
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The professional petroleum metering calculation tool of GB/T 1885-1998 national standard is adopted to automatically query the standard density table of the petroleum metering meter, convert the apparent density measured by the petroleum densitometer into the standard density, and calculate the volume correction factor (VCF) at the same time, so as to calculate the standard volume and mass of oil products, which improves the efficiency and calculation accuracy compared with manual query.
ENGINE SFC
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CALCULATION OF MARINE ENGINE FUEL CONSUMPTION
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Verdict
The clearest difference is in-app purchases: ENGINE SFC at none against Oil density's 2. ENGINE SFC also leads on update cadence (daily vs every 47 months) and iOS requirement (15.2 vs 17.0). On price, 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
Both are free to download. Oil density sells 2 one-off in-app purchases. ENGINE SFC asks for nothing beyond the download.
Oil density ships an update every 47 months, ENGINE SFC daily. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.
| Parameter | Oil density | ENGINE SFC |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 47 months | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.2 — better |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | 昆 张 | Oleksii Nezhalskyi |
In-app purchases
Oil density
- Monthly card$2.99
- Lifetime Card$8.99
ENGINE SFC
No in-app purchases
Questions
Is Oil density free?
Is ENGINE SFC free?
Do Oil density or ENGINE SFC have ads?
Which is updated more often, Oil density or ENGINE SFC?
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