NerdCalc vs CompSci Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NerdCalc
Perform calculations across binary, hexadecimal, and decimal number bases simultaneously. Easily switch input modes and see results update instantly for all bases. Supports unsigned and 2's complement for negative numbers, along with arithmetic, logic, and bitwise operations.
- Simultaneous base display
- Switchable input modes
- Unsigned and 2's complement support
- Arithmetic operations
- Logic operations
- Bitwise shifting
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NerdCalc is a binary, hexadecimal and decimal calculator that displays all three number bases at the same time. With NerdCalc, you can quickly switch which base you are inputting and the result of your calculations is always updated for all three bases, no matter what the current input mode. NerdCalc supports both unsigned and 2’s complement, to allow for negative numbers, and can perform basic arithmetic and logic operations as well as bitwise shifting. Enjoy!
CompSci Calculator
Perform calculations and conversions between decimal, hexadecimal, and binary bases in real-time. Ideal for programmers and computer scientists, it offers simultaneous display of values across all three modes and supports bitwise operations and complements.
- Decimal, hexadecimal, and binary base calculations
- Real-time simultaneous conversion
- Basic algebra between bases
- Selectable bit size (8, 16, 24, 32)
- Bitwise functions
- 1's and 2's complements
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CompSci Calculator lets you calculate in three different bases: decimal, hexadecimal, and binary. CompSci Calculator was developed for programmers, developers, computer engineers, and computer scientists. In real time you can do part of an equation in one base and then switch to another and complete the equation. As you type in any particular base the values in all three modes are displayed together. Because of the real time instant conversion between the bases CompSci Calculator also serves as an excellent conversion tool. Features: -basic algebra between bases -simultaneous answers in all three bases -selectable bit size: 8,16,24,32 -optional additional 16 bits of radix point precision -bitwise functions -1's and 2's complements -shift left and shift right Student and teacher feedback is very appreciated!
Screenshots
Verdict
The clearest difference is ads: NerdCalc at none against CompSci Calculator's shown. NerdCalc also leads on rating (4.8 vs 4.4) and review sentiment (85% vs 63%). CompSci Calculator's advantage is update cadence (every 3 days vs every 19 months) and device support (3 vs 1). On price and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
NerdCalc holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 183 and 42 respectively. Written reviews point the same way: 85% of NerdCalc's written reviews are positive against 63% of CompSci Calculator's.
NerdCalc ships an update every 19 months, CompSci Calculator every 3 days. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.
| Parameter | NerdCalc | CompSci Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (183 ratings) — better | 4.4 (42 ratings) |
| Positive reviews | 84.8% of reviews — better | 62.5% of reviews |
| Number of ratings | 183 — better | 42 |
| Update frequency | Every 19 months | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Nidal Fakhouri | Corey Smith |
Customer experience
NerdCalc
CompSci Calculator
In-app purchases
NerdCalc
No in-app purchases
CompSci Calculator
No in-app purchases
Questions
Is NerdCalc free?
Is CompSci Calculator free?
Which has better reviews, NerdCalc or CompSci Calculator?
Do NerdCalc or CompSci Calculator have ads?
Which is updated more often, NerdCalc or CompSci Calculator?
Other comparisons
