# RPN Calculator 48 vs Diver Tools

The clearest difference is ads: RPN Calculator 48 at none against Diver Tools's shown. RPN Calculator 48 also leads on price ($3.99 vs $9.99) and ratings volume (246 vs 1). Diver Tools's advantage is update cadence (every 5 weeks vs every 14 months) and iOS requirement (16.0 vs 18.0). On rating, in-app purchases, monetization model and device support there is nothing between them.

RPN Calculator 48 costs $3.99 and Diver Tools $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Diver Tools holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: RPN Calculator 48 has 246 ratings behind it against 1, so its average is the more settled of the two.

RPN Calculator 48 ships an update every 14 months, Diver Tools every 5 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | RPN Calculator 48 | Diver Tools |
| --- | --- | --- |
| Price | **$3.99** | $9.99 |
| Rating | [4.8 (246 ratings)](https://appshunter.io/ios/app/rpn-calculator-48/id336580727/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diver-tools/id1613178459/reviews)** |
| Number of ratings | **246** | 1 |
| Positive reviews | 95.9% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#196** | — |
| Size | 1 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tom Kerrigan](https://appshunter.io/developer/295445504) | [Michael Gibby](https://appshunter.io/developer/1613178461) |

## What reviewers say

### RPN Calculator 48

[App page](https://appshunter.io/ios/app/rpn-calculator-48/id336580727)

**Currently charting:** #196 Top Paid · Utilities (US App Store)

This app offers a scientific calculator with Reverse Polish Notation (RPN) functionality, providing an alternative to the default calculator. It features a large, easy-to-read display, a 100-entry stack, and extensive undo/redo capabilities. Its design is inspired by classic HP calculators.

**Highlights:** Reverse Polish Notation (RPN), Scientific calculator functions, Swipe gestures for undo/redo, 100 entry stack, 6 memory buttons, State saving on exit

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent RPN implementation
- 👍 Familiar and intuitive interface
- 💡 Useful features for everyday calculations
- 🚀 Reliable and stable performance
- 👍 Large and visible stack display

**What reviewers complain about**

- 🐛 Lack of landscape mode support on iPad
- 💡 Could use more advanced features like matrix operations

**Reported bugs**

- Display issues in landscape mode on iPad

**Requested features**

- Add haptic feedback for key presses
- Implement ability to recall previous calculations from stack
- Improve landscape mode support on iPad


### Diver Tools

[App page](https://appshunter.io/ios/app/diver-tools/id1613178459)

This app is a comprehensive dive planning tool for technical and rebreather divers. It offers customizable checklists, offline calculations for gas mixes and decompression, and historical data tracking for rebreather cells. Ensure safety and preparedness with this essential companion for every dive.

**Highlights:** Customizable dive checklists, Offline dive calculations, Rebreather cell historical readings, Cave conditions reporting, Equipment safety checks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RPN Calculator 48 free?

RPN Calculator 48 costs $3.99, with no in-app purchases.

### Is Diver Tools free?

Diver Tools costs $9.99, with no in-app purchases.

### Which has better reviews, RPN Calculator 48 or Diver Tools?

Diver Tools is rated higher. RPN Calculator 48 averages 4.8 out of 5 from 246 ratings, while Diver Tools averages 5.0 from 1 ratings.

### Do RPN Calculator 48 or Diver Tools have ads?

Diver Tools shows ads; RPN Calculator 48 does not.

### Which is updated more often, RPN Calculator 48 or Diver Tools?

RPN Calculator 48 ships an update every 14 months, and Diver Tools every 5 weeks. Most recently, RPN Calculator 48 was updated on October 29, 2026 and Diver Tools on October 25, 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.*