sci.calculator vs Custom Real
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sci.calculator
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A stylish yet powerful scientific calculator. The app is designed with a single-screen layout for simple and intuitive operation. Calculation history is saved and can be reused easily. Results are shown in both mathematical notation and decimal format. 【Main Features】 • Basic arithmetic, modulo, trigonometric functions • Exponential, logarithmic, power and root calculations • Unit conversion and 47 scientific constants (CODEC2022) • Prime factorization, GCD and LCM • Binary, octal and hexadecimal calculations with logical operations • 8 memory slots • Permutations, combinations, and pseudo-random numbers • Systems of linear equations (up to 4 variables) • Polynomial equations (up to 4th degree) • Equation solving using Newton’s method • Time and angle calculations • External keyboard support 【Designed for Ease of Use】 • Unit conversion includes intuitive units such as “Tokyo Dome volume,” light-years, and cooking measurements. • Choose from 6 color themes to match your iPhone or iPad. • Quick switching between RAD/DEG and number bases on a single screen. • Supports iPad multitasking, allowing calculations alongside other apps. Clean, readable, and efficient. A scientific calculator that combines functionality with a modern design.
Custom Real
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This is a calculator application that can register formulas and perform real-time calculations. You can change the color of the buttons, background image, etc.
Screenshots
Verdict
The clearest difference is in-app purchases: Custom Real at none against sci.calculator's 1. Custom Real also leads on update cadence (every 3 days vs every 5 weeks). sci.calculator's advantage is ads (none vs shown). On price, device support and iOS requirement 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
Both are free to download. sci.calculator sells 1 one-off in-app purchase. Custom Real asks for nothing beyond the download.
sci.calculator ships an update every 5 weeks, Custom Real every 3 days. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.
| Parameter | sci.calculator | Custom Real |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukihiro Shioya | kenta hamazaki |
In-app purchases
sci.calculator
- remove Ads$1.99
Custom Real
No in-app purchases
Questions
Is sci.calculator free?
Is Custom Real free?
Do sci.calculator or Custom Real have ads?
Which is updated more often, sci.calculator or Custom Real?
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