Binary Decimal Converter vs Big Number Calculator+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Binary Decimal Converter
Easily convert numbers between Binary, Decimal, Hexadecimal, and Octal formats. This educational tool is designed for quick and accurate number system conversions.
- Binary conversion
- Decimal conversion
- Hexadecimal conversion
- Octal conversion
- Number system tool
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Convert numbers between Binary, Decimal, HexaDecimal and Octal numbers. Terms and Conditions (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Big Number Calculator+
Perform calculations with extremely large numbers, up to 66,000 digits. Supports addition, subtraction, multiplication, and division, with options for different calculation engines and data input methods. Results can be saved and printed in formatted text files.
- Handles up to 66,000 digits
- Addition, subtraction, multiplication, division
- Selectable calculation engines (Swift, Objective-C)
- Load data from files (txt, rtf, rtfd)
- Automatic data formatting for printing and saving
- Customizable number separators
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“Big Number Calculator+” is an application that can calculate very large numbers. The format that can be used is decimal (integer). The calculation functions that can be used are addition, subtraction, multiplication, and division. The number of digits is limited to 66000 digits. Only plus signs can be used. Minus signs cannot be used. The calculation engine used in the calculation can be selected from “Swift” and “Objective-C”. You can also view the source code of the calculation engine. Please use at your own risk. Only numerical values (1,2,3,4,5,6,7,8,9,0) are extracted from the input data. You can optionally enter non-numeric characters. It can be used as a delimiter. It can be load from a file in addition to direct input. Input data and calculation results are automatically formatted for printing and saving. The save file is saved in text format (.txt). "Big Number Calculator" for macOS is also available. Main Specifications • iOS 13 and iPadOS 13 or later Main functions Maximum number of digits of input data • 66000 digits Calculation function • Addition, subtraction, multiplication, division The algorithm uses the "brush calculation method". The division is displayed as “quotient and remainder". Calculation engine • “Swift” and “Objective-C” can be selected. Numeric format • Decimal number (integer) Only the plus sign can be used as the sign. Minus signs cannot be used. Numerical input • Only numerical values (1,2,3,4,5,6,7,8,9,0) are extracted. • Characters other than numerical values can be entered in the option settings. Can be used as a delimiter. Load from file • The file types that can be load are "txt, rtf, rtfd". Data replacement and registration • Input data and calculation results can be replaced by dragging and dropping. It can also be registered in the register. Separation • Separate with the selected delimiter (comma and space). • Separate by the selected number of separation digits (3, 6, 10, 16, 24). Any number of separation digits can be entered. Printing • Input data and calculation results are automatically formatted. Save • Input data and calculation results are automatically formatted. • The file format is text (.txt) format. Source code • The source code of the calculation engine can be displayed. Please use at your own risk.
Screenshots
Verdict
The clearest difference is review sentiment: Binary Decimal Converter at 67% against Big Number Calculator+'s 0%. Binary Decimal Converter also leads on rating (4.9 vs 3.7) and ratings volume (68 vs 3). Big Number Calculator+'s advantage is in-app purchases (none vs 2) and update cadence (every 4 months vs every 25 months). On price, 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
Both are free to download. Binary Decimal Converter sells 2 in-app purchases, starting at $0.99 per year. Big Number Calculator+ asks for nothing beyond the download.
Binary Decimal Converter holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: Binary Decimal Converter has 68 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of Binary Decimal Converter's written reviews are positive against 0% of Big Number Calculator+'s.
Binary Decimal Converter ships an update every 25 months, Big Number Calculator+ every 4 months. The most recent releases landed on July 7, 2026 and June 4, 2026 respectively.
| Parameter | Binary Decimal Converter | Big Number Calculator+ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (68 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 66.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 68 — better | 3 |
| Update frequency | Every 25 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Satish Boggarapu | Kunio Takeuchi |
Customer experience
Binary Decimal Converter
Big Number Calculator+
In-app purchases
Binary Decimal Converter
- Premium Version - 1 YEAR$0.991 Year
- Premium Version$1.99
Big Number Calculator+
No in-app purchases
Questions
Is Binary Decimal Converter free?
Is Big Number Calculator+ free?
Which has better reviews, Binary Decimal Converter or Big Number Calculator+?
Do Binary Decimal Converter or Big Number Calculator+ have ads?
Which is updated more often, Binary Decimal Converter or Big Number Calculator+?
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