Oil density vs ESwap助理
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.
ESwap助理
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主要特点： 快速导航：轻松浏览电池柜的详细信息和设置。 操作方便：只需点击几下即可执行操作和管理配置。 实时监控：实时跟踪电池性能和系统状态。 用户友好界面：为高效使用量身定制的简单直观的设计。 使运维人员友好的应用程序轻松管理和操作电池柜。这款应用程序专为快速浏览和无缝控制而设计，可确保在与电池柜交互时获得流畅高效的体验。
Screenshots
Verdict
The clearest difference is in-app purchases: ESwap助理 at none against Oil density's 2. ESwap助理 also leads on update cadence (monthly vs every 47 months) and iOS requirement (11.0 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. ESwap助理 asks for nothing beyond the download.
Oil density ships an update every 47 months, ESwap助理 monthly. The most recent releases landed on October 9, 2026 and September 11, 2026 respectively.
| Parameter | Oil density | ESwap助理 |
|---|---|---|
| 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 | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | 昆 张 | Beijing Upsky Century Energy Storage Technology Co., LTD |
In-app purchases
Oil density
- Monthly card$2.99
- Lifetime Card$8.99
ESwap助理
No in-app purchases
