SciCalc82 vs Millimeter Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SciCalc82
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.
- Authentic 1980s design
- Realistic key click sounds
- LCD display simulation
- Familiar functions
- Modern usability enhancements
- Quick help guide
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Simple Scientific Calculator adhering to the style of the early 1980s. Easy to use and familiar for those of us from that era. Adds a touch of realism in look and feel, layout, key click sounds, LCD display digits and response. Functions and operations are as you're used to, but adds a few more features that you'd wished you'd had back then, to give you a modern day usable device. Quick Help: • Green [INV] button (upper left) is the "shift" or "2nd" function button. • Press and hold the blue [MODE] (HELP) button for web-based help.
Millimeter Pro
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.
- 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
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App blog: https://goo.gl/da6LdZ Millimeter Pro is an easy-to-use and helpful measurement tool for iPhone or iPad. It uses a touch screen as a ruler or tape measure to make quick measurements, split objects into equal parts, measure object ratio (W/H), measure area, estimate diameter and angles, and split circular objects into equal parts. Place an object on the screen and simply touch and move rulers to measure it. You can measure in different units: MILLIMETERS or INCHES. Features: - mm and inch units - 2D measurements: vertical and horizontal rulers - area calculation - ratio calculation (W/H) - split linear and circular objects into equal parts - shows the length and angle of each part - disable/enable touch screen (freeze feature) - diameter or radius estimation - angle measure with Protractor / Goniometer mode - Thread pitch gauge for TPI and pitch size measurements Use this app in different areas to measure small objects that fit within your phone or tablet screen: jewelry, rings, stones, gem, beads, screws, bolts, buttons, nuts, knitting needles, knitting patterns, washers, insects, mosaic tile, hooks, frame wrap angle, etc. Enjoy the app and Thank you for your interest and support! VisTech.Projects Team
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | SciCalc82 | Millimeter Pro |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.6 (19 ratings) — better | 4.4 (109 ratings) |
| Positive reviews | 86.4% of reviews — better | 57.9% of reviews |
| Number of ratings | 19 | 109 — better |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #186 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul SALANITRI | VisTech.Projects LLC |
Customer experience
SciCalc82
Millimeter Pro
In-app purchases
SciCalc82
No in-app purchases
Millimeter Pro
No in-app purchases








