# SciCalc82 vs Millimeter Pro

The clearest difference is price: SciCalc82 at Free against Millimeter Pro's $3.99. SciCalc82 also leads on review sentiment (86% vs 58%) and update cadence (every 3 weeks vs every 4 months). Millimeter Pro's advantage is chart position (#186 vs unranked) and ratings volume (109 vs 19). On rating, ads, in-app purchases and monetization model there is nothing between them.

SciCalc82 is free to download; Millimeter Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SciCalc82 holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Millimeter Pro has 109 ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 86% of SciCalc82's written reviews are positive against 58% of Millimeter Pro's.

SciCalc82 ships an update every 3 weeks, Millimeter Pro every 4 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SciCalc82 | Millimeter Pro |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.6 (19 ratings)](https://appshunter.io/ios/app/scicalc82/id590398877/reviews)** | [4.4 (109 ratings)](https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777/reviews) |
| Number of ratings | 19 | **109** |
| Positive reviews | **86.4% of reviews** | 57.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | Free |
| Best chart rank | — | **#186** |
| Size | 8 MB | 24 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul SALANITRI](https://appshunter.io/developer/590398880) | [VisTech.Projects LLC](https://appshunter.io/developer/620969851) |

## What reviewers say

### SciCalc82

[App page](https://appshunter.io/ios/app/scicalc82/id590398877)

Experience a scientific calculator designed with the authentic look and feel of the early 1980s. It offers familiar functions with added modern features for enhanced usability, including realistic key click sounds and an LCD display.

**Highlights:** Authentic 1980s design, Realistic key click sounds, LCD display simulation, Familiar functions, Modern usability enhancements, Quick help guide

**Features:** macOS Compatibility

**In-app purchases:** none


### Millimeter Pro

[App page](https://appshunter.io/ios/app/millimeter-pro-screen-ruler/id631810777)

**Currently charting:** #186 Top Paid · Utilities (US App Store)

This app transforms your device into a versatile measuring tool. It allows for precise measurements of length, area, diameter, and angles using the touchscreen. Easily split objects into equal parts and switch between millimeters and inches for your convenience.

**Highlights:** Touchscreen ruler and tape measure, Measure length, area, diameter, and angles, Split objects into equal parts, Supports millimeters and inches, Estimate radius, Thread pitch gauge

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SciCalc82 free?

SciCalc82 is free to download, with no in-app purchases.

### Is Millimeter Pro free?

Millimeter Pro costs $3.99, with no in-app purchases.

### Which has better reviews, SciCalc82 or Millimeter Pro?

SciCalc82 is rated higher. SciCalc82 averages 4.6 out of 5 from 19 ratings, while Millimeter Pro averages 4.4 from 109 ratings.

### Do SciCalc82 or Millimeter Pro have ads?

Neither SciCalc82 nor Millimeter Pro shows ads.

### Which is updated more often, SciCalc82 or Millimeter Pro?

SciCalc82 ships an update every 3 weeks, and Millimeter Pro every 4 months. Most recently, SciCalc82 was updated on October 23, 2026 and Millimeter Pro on October 24, 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.*