# Complex RPN Calculator vs StudentLite

The clearest difference is rating: StudentLite at 4.8 against Complex RPN Calculator's 3.8. StudentLite also leads on review sentiment (75% vs 52%). Complex RPN Calculator's advantage is in-app purchases (none vs 3) and ratings volume (22 vs 6). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. StudentLite sells 3 one-off in-app purchases. Complex RPN Calculator asks for nothing beyond the download.

StudentLite holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 22 and 6 respectively. Written reviews point the same way: 52% of Complex RPN Calculator's written reviews are positive against 75% of StudentLite's.

Complex RPN Calculator ships an update every 5 months, StudentLite every 3 months. The most recent releases landed on August 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Complex RPN Calculator | StudentLite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (22 ratings)](https://appshunter.io/ios/app/complex-rpn-calculator/id291826330/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/studentlite/id469547199/reviews)** |
| Number of ratings | **22** | 6 |
| Positive reviews | 51.7% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 1 MB | 16 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John Coddington](https://appshunter.io/developer/291826333) | [Hannes Sverrisson](https://appshunter.io/developer/428851947) |

## What reviewers say

### Complex RPN Calculator

[App page](https://appshunter.io/ios/app/complex-rpn-calculator/id291826330)

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.

**Highlights:** Complex number support, Four-level stack, Polar and rectangular formats, State persistence, 10 memory locations, Scientific calculations

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Great RPN functionality
- ✨ Complex number support
- 🆓 Free to use
- 🚫 No ads or in-app purchases
- 💻 Works on macOS

**What reviewers complain about**

- 🎨 SwiftUI design is ugly
- 🐌 Slow keyboard response
- 🖱️ Clunky operation
- 📉 Complex number operations limited
- ⚠️ Broken on newer iOS versions (historically)

**Reported bugs**

- 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)

**Requested features**

- Turn off key click sound
- Customize number display
- See the stack
- Fix slow entry response
- Fix imaginary number calculation (X^3)


### StudentLite

[App page](https://appshunter.io/ios/app/studentlite/id469547199)

A scientific calculator for iPhone and iPad offering large, uncluttered buttons for efficient calculations. Easily access advanced functions with intuitive swipes and customize your experience with background and display options.

**Highlights:** Swipe-based scientific functions, Backspace correction key, Copy and paste functionality, Customizable background and digits, Extended accuracy calculations, Degrees/Radians switching

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Enable Backgrounds | $1.99 | one-time |
| Disable Ads | $1.99 | one-time |
| Support Development | $4.99 | one-time |


## Frequently asked questions

### Is Complex RPN Calculator free?

Complex RPN Calculator is free to download, with no in-app purchases.

### Is StudentLite free?

StudentLite is free to download, with in-app purchases available.

### Which has better reviews, Complex RPN Calculator or StudentLite?

StudentLite is rated higher. Complex RPN Calculator averages 3.8 out of 5 from 22 ratings, while StudentLite averages 4.8 from 6 ratings.

### Do Complex RPN Calculator or StudentLite have ads?

Neither Complex RPN Calculator nor StudentLite shows ads.

### Which is updated more often, Complex RPN Calculator or StudentLite?

Complex RPN Calculator ships an update every 5 months, and StudentLite every 3 months. Most recently, Complex RPN Calculator was updated on August 23, 2026 and StudentLite on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*