Complex RPN Calculator vs A Complex Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Complex RPN Calculator
This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.
- Complex number support
- Four-level stack
- Polar and rectangular formats
- State persistence
- 10 memory locations
- Scientific calculations
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Complex RPN Calculator is a scientific RPN calculator with a four stack whose native number is complex. You can view and enter numbers in both polar and rectangular formats. Complex RPN remembers its state between usages and has 10 memory locations.
A Complex Calc
Perform complex calculations with a modern, user-friendly interface. Offers both basic and scientific modes, including support for complex numbers and advanced functions. This lightweight application provides a history of computations and is completely free with no advertisements.
- Complex number support
- Basic and Scientific modes
- History of operations
- Trigonometric and hyperbolic functions
- Random number generation
- Lightweight app size
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A Complex Calc is built for fast complex-number work without losing the tools you need for serious math. Use scientific functions quickly and check floating-point results in rectangular and polar form. Reuse past results from history, work with built-in constants, and keep advanced tools close while solving everyday and technical calculations.
Screenshots
Verdict
The clearest difference is rating: A Complex Calc at 4.7 against Complex RPN Calculator's 3.8. A Complex Calc also leads on review sentiment (80% vs 52%) and update cadence (every 3 weeks vs every 5 months). On price, ratings volume, ads 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.
A Complex Calc holds the better App Store score, 4.7 against 3.8. Both are backed by a comparable volume of ratings — 22 and 23 respectively. Written reviews point the same way: 52% of Complex RPN Calculator's written reviews are positive against 80% of A Complex Calc's.
Complex RPN Calculator ships an update every 5 months, A Complex Calc every 3 weeks. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.
| Parameter | Complex RPN Calculator | A Complex Calc |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (22 ratings) | 4.7 (23 ratings) — better |
| Positive reviews | 51.7% of reviews | 80.0% of reviews — better |
| Number of ratings | 22 | 23 — better |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | John Coddington | Antonio Ruffolo |
Customer experience
Complex RPN Calculator
A Complex Calc
Bugs and requests
Complex RPN Calculator
Reported bugs
6 issues- Mutes other apps when used
- Slow keyboard response after update
- X^3 calculation incorrect for large imaginary numbers
- App crashes on opening/button press (historical iOS 9 issues)
- App starts upside down in landscape on iPad (historical iOS 8 issue)
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- Unreadable fonts on iPad (historical version 1.2 issue)
Requested features
24 requests- Turn off key click sound
- Customize number display
- See the stack
- Fix slow entry response
- Fix imaginary number calculation (X^3)
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- Improve SwiftUI design (less whitespace)
- Show all stack levels
- Add angle function
- Add magnitude function
- Add 'Clear X' button
- Make RAD/DEG toggle button
- Single button for Sci/Eng/Fix/Raw modes
- Add '//' (parallel) function
- Add 'Module' button
- Change 'i' to 'j' for imaginary part
- Show stack levels
- Add log2 function
- Add logGamma function
- Smaller buttons
- Add complex conjugate button
- Add real part button
- Add imaginary part button
- Add modulo function
- Make app start faster
A Complex Calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Complex RPN Calculator
No in-app purchases
A Complex Calc
No in-app purchases
Questions
Is Complex RPN Calculator free?
Is A Complex Calc free?
Which has better reviews, Complex RPN Calculator or A Complex Calc?
Do Complex RPN Calculator or A Complex Calc have ads?
Which is updated more often, Complex RPN Calculator or A Complex Calc?
Other comparisons
