Comparison

Interpolator vs GyroCop

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Two-row interpolation
  • Three-row interpolation
  • Table value lookup
  • No calculator needed
  • Cargo surveyor tool
  • General table use
Features
Read full description

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.

About

GyroCop

Read full description

GyroCop is a practical marine compass check tool designed for seafarers. The app helps officers perform celestial compass checks using the Sun, Moon, planets and bright stars. It supports clear bridge workflows for calculating magnetic course, deviation and final compass error. Main features: • Celestial compass check calculations • Sun, Moon, planets and bright stars support • Magnetic course and compass error calculation • Vessel deviation card storage • Deviation curve view • Check history and reports • Clean dark maritime interface GyroCop is designed for practical bridge use and training. Important: GyroCop is a calculation aid only. It does not replace official navigation equipment, approved onboard procedures, nautical publications, class/company requirements, or the professional judgment of the officer on watch.

Screenshots

Interpolator4 screens
GyroCop4 screens

Verdict

The call

The clearest difference is update cadence: GyroCop at every 6 days against Interpolator's every 4 months. Interpolator's advantage is iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Interpolator ships an update every 4 months, GyroCop every 6 days. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

Scorecard2 real differences · 8 level
Interpolator versus GyroCop: the parameters behind the verdict, then further details
ParameterInterpolatorGyroCop
PriceFreeFree
Rating4.9 (74 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings74 — better—
Update frequencyEvery 4 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better17.6
Further details — not scored
Size18 MB14 MB
Age rating+44+
Developerron mooringDlyaver Alchik

In-app purchases

None

Interpolator

No in-app purchases

None

GyroCop

No in-app purchases

Questions

Is Interpolator free?
Interpolator is free to download, with no in-app purchases.
Is GyroCop free?
GyroCop is free to download, with no in-app purchases.
Do Interpolator or GyroCop have ads?
Neither Interpolator nor GyroCop shows ads.
Which is updated more often, Interpolator or GyroCop?
Interpolator ships an update every 4 months, and GyroCop every 6 days. Most recently, Interpolator was updated on October 12, 2026 and GyroCop on October 4, 2026.

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