sci.calculator vs HyoMemo
Price, ratings, monetisation and update history for both apps, side by side β 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. γMain Featuresγ β’ Basic arithmetic, modulo, trigonometric functions β’ Exponential, logarithmic, power and root calculations β’ Unit conversion and 47 scientific constants (CODEC2022) β’ Prime factorization, GCD and LCM β’ Binary, octal and hexadecimal calculations with logical operations β’ 8 memory slots β’ Permutations, combinations, and pseudo-random numbers β’ Systems of linear equations (up to 4 variables) β’ Polynomial equations (up to 4th degree) β’ Equation solving using Newtonβs method β’ Time and angle calculations β’ External keyboard support γDesigned for Ease of Useγ β’ Unit conversion includes intuitive units such as βTokyo Dome volume,β light-years, and cooking measurements. β’ Choose from 6 color themes to match your iPhone or iPad. β’ Quick switching between RAD/DEG and number bases on a single screen. β’ Supports iPad multitasking, allowing calculations alongside other apps. Clean, readable, and efficient. A scientific calculator that combines functionality with a modern design.
HyoMemo
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HyoMemo turns your lists into simple spreadsheet-style tables: a checkbox, a category, and the item. β’ Create as many tables as you like, each with its own icon β’ Tap a cell and type, just like a spreadsheet. Press Return to move to the next row β’ Filter by category and sort by any column β’ Auto reset: checks clear automatically every day or week at the time you choose. Great for daily bags and weekly inspections β’ Home Screen and Lock Screen widgets. Check items right from the Home Screen β’ Start from templates, or save your own β’ Search across all tables β’ Paste several lines to add them as separate rows β’ Rename the Category and Item columns for each table β’ Add text from Safari or other apps with the share sheet, or ask Siri β’ Sync iPhone and iPad with your own iCloud Drive (turn it on in Settings) β’ Undo deletions and resets, and export to CSV, Markdown, or JSON Great for groceries, daycare and work bags, emergency kits, and step-by-step procedures. The free version shows ads. Remove them with a one-time purchase.
Screenshots
Verdict
The clearest difference is ads: sci.calculator at none against HyoMemo's shown. sci.calculator also leads on iOS requirement (15.0 vs 17.0). HyoMemo's advantage is update cadence (every 4 days vs every 5 weeks). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. sci.calculator sells 1 one-off in-app purchase and HyoMemo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
sci.calculator ships an update every 5 weeks, HyoMemo every 4 days. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.
| Parameter | sci.calculator | HyoMemo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 4 days β better |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 15.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 49 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukihiro Shioya | Tatsuki Izumi |
In-app purchases
sci.calculator
- remove Ads$1.99
HyoMemo
- Remove Ads$1.99
Questions
Is sci.calculator free?
Is HyoMemo free?
Do sci.calculator or HyoMemo have ads?
Which is updated more often, sci.calculator or HyoMemo?
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