Interpolator vs Oil density
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interpolator
Easily find values within tables using interpolation for two or three rows. This utility app simplifies calculations without needing a separate calculator, making it ideal for various table-based environments.
- Two-row interpolation
- Three-row interpolation
- Table value lookup
- No calculator needed
- Cargo surveyor tool
- General table use
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This is a small app which makes it very easy to look up values in tables (math etc) when you have to interpolate both in two and in three rows. No more need for a calculator to interpolate manually. This app was designed primarily for cargo surveyors working with tank calibration tables, but the app does have its application in any environment where tables are used. As of 13th January 2015, this app has become FREE until further notice.
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.
Screenshots
Verdict
The clearest difference is review sentiment: Interpolator at 67% against Oil density's 0%. Interpolator also leads on rating (4.9 vs 1.0) and in-app purchases (none vs 2). On price, ads, monetization model 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. Interpolator asks for nothing beyond the download.
Interpolator holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Interpolator has 74 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Interpolator's written reviews are positive against 0% of Oil density's.
Interpolator ships an update every 4 months, Oil density every 47 months. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.
| Parameter | Interpolator | Oil density |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (74 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 66.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 74 — better | 1 |
| Update frequency | Every 4 months — better | Every 47 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 18 MB | 7 MB |
| Age rating | +4 | 4+ |
| Developer | ron mooring | 昆 张 |
Customer experience
Interpolator
Oil density
In-app purchases
Interpolator
No in-app purchases
Oil density
- Monthly card$2.99
- Lifetime Card$8.99
Questions
Is Interpolator free?
Is Oil density free?
Which has better reviews, Interpolator or Oil density?
Do Interpolator or Oil density have ads?
Which is updated more often, Interpolator or Oil density?
Other comparisons
