Linear Interpolation Master vs Flight Stamp Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Linear Interpolation Master
This tool simplifies linear interpolation calculations for industrial commissioning engineers. It features large, easily readable numbers for field use and allows for quick swapping of coordinate systems, such as converting between 4-20mA and 0-100% scales.
- Large number display for field visibility
- Quickly swap X and Y coordinates
- 4-20mA to 0-100% conversion
- 0-100% to 4-20mA conversion
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A linear interpolation calculator designed for industrial commissioning engineers. It has the following features: - Displays large numbers for when you are out in the field commissioning. - Allows quickly swapping x and y coordinates; for example from 4-20mA -> 0-100% to 0-100% -> 4-20mA.
Flight Stamp Pro
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Flight Stamp is your reliable flight timestamp companion—built for pilots who need to log takeoffs, landings, and flight events with precision. Easily add or reset event rows with a tap, then export logs to Notes or share them to another device for quick documentation. Simple, fast, and built for the cockpit. New: Cruise Crew Rest Plan rest with confidence between TOC and TOD: Enter TOC/TOD (UTC) with plus/minus pads to set the true rest window Auto-split rest equally by crew (By 2/3/4), with clean HH+MM durations View slots in UTC and Local TZ (picker included) Explore SS/LL or LL/SS variations with adjustable “Short” length
Screenshots
Verdict
The clearest difference is price: Linear Interpolation Master at Free against Flight Stamp Pro's $1.99. Linear Interpolation Master also leads on iOS requirement (11.0 vs 16.6). Flight Stamp Pro's advantage is ads (none vs shown) and update cadence (every 5 days vs every 5 months). On 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
Linear Interpolation Master is free to download; Flight Stamp Pro costs $1.99 up front. Linear Interpolation Master sells 3 one-off in-app purchases and Flight Stamp Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Linear Interpolation Master ships an update every 5 months, Flight Stamp Pro every 5 days. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.
| Parameter | Linear Interpolation Master | Flight Stamp Pro |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.7 (176 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 176 — better | — |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 16 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | VERVE TECHNOLOGIES PTY. LTD. | Christian Cuenca |
In-app purchases
Linear Interpolation Master
- Generous Tip$2.99
- Massive Tip$3.99
- Amazing Tip$4.99
Flight Stamp Pro
- Times Up Flight-ProFree
Questions
Is Linear Interpolation Master free?
Is Flight Stamp Pro free?
Do Linear Interpolation Master or Flight Stamp Pro have ads?
Which is updated more often, Linear Interpolation Master or Flight Stamp Pro?
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