Comparison

Linear Interpolation Master vs Subtext

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

Head to head
About

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.

Highlights
  • Large number display for field visibility
  • Quickly swap X and Y coordinates
  • 4-20mA to 0-100% conversion
  • 0-100% to 4-20mA conversion
Features
Read full description

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.

About

Subtext

Features
Read full description

Have you ever stared at a message and wondered, "What are they really trying to say?" Or struggled to find the perfect response that strikes the right balance between polite and assertive? Meet Subtext, your ultimate AI-powered communication assistant that reads between the lines for you! Subtext is an innovative translation app that doesn't translate languages—it translates intentions. By leveraging a cutting-edge Large Language Model (LLM), Subtext analyzes the underlying subtext of any message and provides you with the true meaning behind the words. Even better, it offers tailored reply suggestions to fit your exact goal. Key Features: Deep Subtext Analysis Simply paste a confusing or passive-aggressive message into the app. Subtext will instantly break down the sender's true intentions, emotional state, and hidden agenda. Never be left guessing again! Multi-Style Reply Generator Need to reply but don't know how? Choose your goal! Whether you want to show high EQ, politely decline, flirt back, or confidently stand your ground, Subtext generates multiple reply options for you to copy with just one tap. 100% Offline & Absolute Privacy This is our biggest breakthrough! Subtext downloads and runs an optimized Large Language Model directly on your iPhone's Neural Engine. No Internet Required: Analyze messages anywhere, anytime, even on airplane mode. Zero Data Tracking: Your private conversations never leave your device. We do not upload your chats to any cloud servers. Your secrets remain strictly yours. Adaptive Multi-Language Output Whether the original message is in English, Spanish, Japanese, or Chinese, Subtext adapts to your device's native language to provide culturally relevant analysis and flawless replies. Stop overthinking your chats. Let Subtext be your secret weapon for flawless communication. Download now and take control of every conversation! (Note: The app requires downloading a local LLM file upon first launch for the offline features to work.)

Screenshots

Linear Interpolation Master3 screens
Subtext2 screens

Verdict

The call

The clearest difference is in-app purchases: Subtext at none against Linear Interpolation Master's 3. Subtext also leads on ads (none vs shown). Linear Interpolation Master's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On price and update cadence 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. Linear Interpolation Master sells 3 one-off in-app purchases. Subtext asks for nothing beyond the download.

UpkeepUpdate frequency

Linear Interpolation Master ships an update every 5 months, Subtext every 3 months. The most recent releases landed on November 2, 2026 and November 13, 2026 respectively.

Scorecard4 real differences · 6 level
Linear Interpolation Master versus Subtext: the parameters behind the verdict, then further details
ParameterLinear Interpolation MasterSubtext
PriceFreeFree
Rating4.7 (186 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings186 — better—
Update frequencyEvery 5 monthsEvery 3 months — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better16.6
Further details — not scored
Size16 MB7 MB
Age rating4+4+
DeveloperVERVE TECHNOLOGIES PTY. LTD.Yue Pu

In-app purchases

3 purchases

Linear Interpolation Master

One-time3
  • Generous Tip$2.99
  • Massive Tip$3.99
  • Amazing Tip$4.99
None

Subtext

No in-app purchases

Questions

Is Linear Interpolation Master free?
Linear Interpolation Master is free to download, with in-app purchases available.
Is Subtext free?
Subtext is free to download, with no in-app purchases.
Do Linear Interpolation Master or Subtext have ads?
Linear Interpolation Master shows ads; Subtext does not.
Which is updated more often, Linear Interpolation Master or Subtext?
Linear Interpolation Master ships an update every 5 months, and Subtext every 3 months. Most recently, Linear Interpolation Master was updated on November 2, 2026 and Subtext on November 13, 2026.

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