Calculator SC vs SysX Buddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator SC
This app provides a multi-functional calculator with a familiar interface. It includes scientific, unit conversion, and logic calculation modes, along with extensive mathematical functions and constants. Calculations can be shared across modes, and it supports copy-paste functionality.
- Scientific calculator mode
- Unit converter and calculator
- Logic calculator (n-base conversion)
- Algebraic logic and calculation priority
- Variables and memories
- Complex number calculations
- Unit and currency converter
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The SC-323PU is a multi functional calculator. It is designed in a way, that it simulates the visual and operational aspects of a true pocket calculator, such that the user will be immediately familiar with its interface. A complete operation manual is included within the App. The SC-323PU offers the following calculator modes for different tasks: - SCIENTIFIC CALCULATOR - UNIT CONVERTER and UNIT CALCULATOR - LOGIC CALCULATOR (n-base conversion) • Full operating instructions are included in the App (visible when device is in landscape orientation). • All modes share the same memory contents, and calculation value, so that the different calculator modes can be used in one calculation task. • Pasteboard support (copy and paste) • Algebraic logic for calculation entry. • Priority of calculations according to a given mathematical formula. • 30 levels of parentheses or pending operations. • Variables and memories to store values and use in calculations. • Floating decimal point calculations with 20 digits mantissa and 2 digits exponent. • Calculations: Four arithmetic calculations, constant calculation, memory calculations, trigonometric and inverse trigonometric functions, hyperbolic and inverse hyperbolic functions, conversion of angles and time, reciprocals, square roots and cubic roots, X-th roots of Y, squares and powers, logarithmic and exponential functions, factorials, permutations, combinations, conversions of coordinates. • AER (Algebraic Expression Reserve) for repetitive calculations of expressions and formulas. • Complex number calculations. • Different display modes selectable: floating point decimal, fixed point decimal, scientific notation and engineering notation. • DEG/RAD/GRAD selector key. • Fraction calculations. • Time calculations. • Frame rate calculations. • 47 physical constants. • Unit converter and currency converter. • Calculations with mixed units. • The calculator is shipped with 84 physical units and 16 SI prefixes predefined. • Exchange rate of currency units will be updated automatically from internet. • Additional units can be defined by user. • Single and two lines view modes optimized for different conversion tasks. • Conversions between 4 base systems HEX, DEC, OCT, BIN. • Boolean operations AND, OR, XOR, NOT, bit shift operations. • Conversion from “little endian” to “big endian” format and vice versa. • Handling of 8, 16, 32 and 64 bit signed and unsigned numbers including overflow calculations. Also on your Apple Watch! You can do basic calculations, tip calculations, unit and currency conversions and even scientific calculations directly on your wrist. Designed with large keys for best usability on the small screen.
SysX Buddy
Manage MIDI System Exclusive messages on your iPhone or iPad. This utility allows you to send, receive, edit, and organize SysEx data for vintage synthesizers and sound modules. It supports external MIDI devices and BLE-MIDI, bridging classic instruments with modern mobile technology.
- Send and receive MIDI SysEx messages
- File manager with folder creation
- Hex viewer for SysEx data
- Create and edit SysEx files
- Support for USB MIDI devices
- Support for BLE-MIDI
- iCloud Drive integration
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Turn your iPhone or iPad into a dedicated SysEx manager. A reliable companion for your vintage MIDI gear. SysX Buddy is a straightforward and powerful app for sending, receiving, editing, and managing MIDI System Exclusive (SysEx) messages. SysEx messages were widely used in the 1980s and 1990s by classic synthesizers and sound modules. SysX Buddy helps bridge the gap between these vintage instruments and your modern iPhone or iPad. Key Features - Send and receive MIDI SysEx messages - Simple file manager with folder creation - View SysEx data in a hex viewer - Create and edit SysEx files in hex format - Send a dump request message when recording - Support for external MIDI devices (USB MIDI) - Support for BLE-MIDI (Bluetooth Low Energy) - Save files anywhere on your device --- with fully customizable folder locations, including iCloud Drive. Note that: - There might be some communication issues on iOS/iPadOS 14. - The application and description contain AI-generated contents. - The data in the screenshot are not included by the application.
Screenshots
Verdict
The clearest difference is rating: SysX Buddy at 5.0 against Calculator SC's 4.7. SysX Buddy also leads on review sentiment (100% vs 83%). Calculator SC's advantage is ratings volume (118 vs 3) and device support (5 vs 3). On update cadence, 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
Calculator SC costs $3.99 and SysX Buddy $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SysX Buddy holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Calculator SC has 118 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 83% of Calculator SC's written reviews are positive against 100% of SysX Buddy's.
Calculator SC ships an update every 5 months, SysX Buddy every 3 months. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | Calculator SC | SysX Buddy |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 4.7 (118 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 83.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 118 — better | 3 |
| Update frequency | Every 5 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Öllinger | Ryouta Kira |
Customer experience
Calculator SC
SysX Buddy
Bugs and requests
Calculator SC
Reported bugs
12 issues- Deg/Rad mode switching bug with inverse tangent function
- Rounding error when using fractions
- Incorrectly calculates negative numbers squared
- Watch app not working
- App opens not working after update
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- Sine function shows wrong sign for certain negative degrees
- Display pushed out of view on iPad
- App freezes or becomes unusable after switching between portrait and landscape
- Incorrect calculation for fractions (-1/2 - 1/3)
- Stopped working after a week
- DAL calculator doesn't have a backspace
- Software not very responsive
Requested features
16 requests- Ability to change ordering of fundamental constants
- Display expressions in scientific mode
- Larger font size for expressions in DAL
- Option to revert to older UI design
- Quadratic equation solver mode
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- Customization of display font size and colors
- Graphing functionality
- Ability to change the design/layout
- Copy and paste functionality
- Key click feedback
- More programming functions (rotate, ASCII, bit mask builder)
- Time/frequency specific conversions, memory, etc.
- Translate help and settings to French
- iPad compatibility improvements
- Backspace in DAL mode
- Sound feedback for key presses
SysX Buddy
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator SC
No in-app purchases
SysX Buddy
No in-app purchases









