# conV. vs Linear Interpolation Master

The clearest difference is in-app purchases: conV. at none against Linear Interpolation Master's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Linear Interpolation Master sells 3 one-off in-app purchases. conV. asks for nothing beyond the download.

conV. ships an update every 4 months, Linear Interpolation Master every 5 months. The most recent releases landed on September 26, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | conV. | Linear Interpolation Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (176 ratings)](https://appshunter.io/ios/app/linear-interpolation-master/id1433976994/reviews)** |
| Number of ratings | — | **176** |
| Positive reviews | — | 62.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 16 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HISANORI KAMEYAMA](https://appshunter.io/developer/683895276) | [VERVE TECHNOLOGIES PTY. LTD.](https://appshunter.io/developer/582523354) |

## What reviewers say

### conV.

[App page](https://appshunter.io/ios/app/conv/id1393839146)

**Features:** macOS Compatibility

**In-app purchases:** none


### Linear Interpolation Master

[App page](https://appshunter.io/ios/app/linear-interpolation-master/id1433976994)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Generous Tip | $2.99 | one-time |
| Massive Tip | $3.99 | one-time |
| Amazing Tip | $4.99 | one-time |


## Frequently asked questions

### Is conV. free?

conV. is free to download, with no in-app purchases.

### Is Linear Interpolation Master free?

Linear Interpolation Master is free to download, with in-app purchases available.

### Do conV. or Linear Interpolation Master have ads?

Both conV. and Linear Interpolation Master show ads.

### Which is updated more often, conV. or Linear Interpolation Master?

conV. ships an update every 4 months, and Linear Interpolation Master every 5 months. Most recently, conV. was updated on September 26, 2026 and Linear Interpolation Master on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*