MeasuresCalc vs iCrucible
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MeasuresCalc
Perform fast and accurate calculations with multiple units of measure. Convert, add, subtract, and multiply across various units, with options for fractional results and adjustable precision. Ideal for professionals and everyday users needing precise measurements.
- Multiple units of measure
- Mixed-unit calculations
- Convert results to any unit
- Fractional length results
- Adjustable rounding precision
- Customizable appearance
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MeasuresCalc makes unit math fast, accurate, and easy. Add, subtract, multiply, and convert across multiple unit types—then view results in the unit you prefer. For lengths, you can even display results as clean fractions (like 3 1/4 in) with a maximum denominator you control. Why you’ll love it: • Multiple Units of Measure: Choose from categories like Length and more to match your task. • Multiple units within each category: Work with inches, feet, yards, miles, meters, centimeters, millimeters, and more. • Mixed-unit calculations: Combine values across different units in a single calculation. • Convert results to any unit type: Instantly view your answer in the unit that makes sense for you. • Fractional length results: Show length in fractional format (e.g., 1/2, 1/4, 1/8, 1/16, 1/32). • Adjustable precision: Fine-tune rounding from 0 to 12 places for the exact level of detail you need. • Easy to use: Clean interface, clear controls, and quick results. • Appearance options: Follow the system theme or choose Light or Dark mode. Built for real-world work: • Graphic Artists & Designers - Convert inches to centimeters for print layouts or screen specs. - Add mixed units (in, ft) and get a precise metric result. - Display lengths as fractions for exact print trimming and bleed. • Electricians & Contractors - Combine cable runs in feet and meters; convert everything to the standard your site uses. - Show fractional inch results for conduit and box placement. - Adjust rounding precision to match job-site tolerances. • Woodworkers & DIY Makers - Add multiple board lengths in inches and feet, then view the final cut list as clean fractions. - Switch between imperial and metric to fit your tools and materials. - Use fractional denominators (2, 4, 8, 16, 32) to match common tape marks. • Cooking & Food Prep - Convert between metric and imperial for recipes (e.g., cm to in for pan sizes). - Round to a practical precision so your measurements are easy to follow. - Keep results readable and consistent across conversions. • Students & Everyday Use - Convert distances for travel, school projects, or home tasks. - Explore different unit systems and learn how they relate. - Keep calculations clear with adjustable rounding and unit conversion. Privacy you can trust: MeasuresCalc is designed with privacy in mind. We do not collect, store, or transmit personal data. We rely only on Apple’s aggregated App Store analytics. See the in-app Privacy Policy for details. Customize your experience: • Rounding precision: 0–12 • Fraction display for length: On/Off • Max denominator: 2, 4, 8, 16, or 32 • Appearance: System, Light, or Dark Whether you’re at the shop, on site, in the studio, or at home, MeasuresCalc helps you get from numbers to answers—fast.
iCrucible
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iCrucible is an AI tool for Materials Science. Using this app, you can learn about how AI tools work for materials screening, and may discover candidate compounds. Learn more at our website: https://www.rimcs.co.jp/ iCrucible makes a prediction of a ternary system on your iPhone or iPad without external services, using graph neural networks and crystal prototype databases bundled in the app. You can watch the phase diagram redrawn at the end of each stage during performing the prediction task. Note that it is the phase diagram at absolute zero (i.e., 0 kelvin) and around zero pressure (i.e., 0 kilobar). Performance It takes a few seconds to minutes depending on the creation settings and your device. The app has a multithreading option to accelerate the core of the AI tool - for example, computationally intensive tasks are sped up around 2.5x on M1 iPad Air. Chemical System A chemical system is selected by choosing three unique chemical elements from: • Element List (with group and period restriction) or • Periodic Table Materials Screening The materials screening is conducted by thresholding two values: • Predicative Variance • Stability (Energy above Convex Hull) Phase Diagram Drawing The drawing is customizable and responsive with useful features: • Formula Labeling • Stability Thresholding • Zoom • Mark Size • Font Size • Balloon with each compound information Confidence Chart The chart shows the distribution of predicative confidences, and provides an overall confidence of the system prediction and the phase diagram. Compound Table The table shows stable and metastable compounds with stabilities and predicative confidences, from which you can easily choose candidate compounds. Settings You can set the default preferences of the chemical system creation and the phase diagram drawing in the App's Settings. The entrance of the In-App Shop is also located in the App's Settings. We offer Free, Standard, and Premium plan. You can subscribe to one of Standard and Premium plan at the In-App Shop. The Shop's Help describes the system tiers used for the content management. Free features: • Free Elements: H to Ar. (*) • Ensemble Size: M = 1. • Prototype Database: Small only. • You can take a note about each chemical system to not forget any novel findings and great ideas. Standard features: • Standard Elements: K to Xe. (*) • Ensemble Size: M is not more than 5. • Prototype Database: Small, Medium, and Large. • You can sort chemical systems into Stocks that are a storage for them. • Chemical systems can be shared between your devices by peer-to-peer Wi-Fi networking. Premium features: • Premium Elements: Cs to Pu except Po to Ra. (*) • Ensemble Size: M is not more than 10. • Prototype Database: all scales, that is, Small, Medium, Large, and Huge. • Multithreading can be used to accelerate the core of the AI tool - for example, computationally intensive tasks are sped up around 2.5x on M1 iPad Air. * Noble gas elements are not available. Flame Gems You need flame gems for a non-free system creation, and can buy them at the In-App Shop. The Shop's Help describes how to consume flame gems and has the cost calculator. You have to buy no flame gems if you are on the Free plan. Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula
Screenshots
Verdict
The clearest difference is price: iCrucible at Free against MeasuresCalc's $1.99. iCrucible also leads on iOS requirement (17.2 vs 26.2). MeasuresCalc's advantage is in-app purchases (none vs 8) and update cadence (every 2 months vs every 5 months). On ads 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
iCrucible is free to download; MeasuresCalc costs $1.99 up front. iCrucible sells 8 in-app purchases, starting at $2.99 per month. MeasuresCalc asks for nothing beyond the download.
MeasuresCalc ships an update every 2 months, iCrucible every 5 months. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.
| Parameter | MeasuresCalc | iCrucible |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.8 (10 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.2 | 17.2 — better |
| Further details — not scored | ||
| Size | 4 MB | 172 MB |
| Age rating | 4+ | 4+ |
| Developer | Matt Pallansch | RIMCS LLC |
In-app purchases
MeasuresCalc
No in-app purchases
iCrucible
- Standard$2.991 Month
- Premium3 Days trial$4.991 Month
- Standard$29.991 Year
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- Premium$49.991 Year
- 500 Flame Gems$4.99
- 2,500 Flame Gems$23.99
- 5,000 Flame Gems$46.99
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- 10,000 Flame Gems$91.90
Questions
Is MeasuresCalc free?
Is iCrucible free?
Do MeasuresCalc or iCrucible have ads?
Which is updated more often, MeasuresCalc or iCrucible?
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