# Stackis RPN vs Check Split and Tip Calculator

The clearest difference is update cadence: Stackis RPN at every 4 days against Check Split and Tip Calculator's every 3 weeks. On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Stackis RPN sells 1 one-off in-app purchase and Check Split and Tip Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Stackis RPN against 5.0 for Check Split and Tip Calculator. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Stackis RPN ships an update every 4 days, Check Split and Tip Calculator every 3 weeks. Both last shipped on November 5, 2026.

## The numbers

| Metric | Stackis RPN | Check Split and Tip Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/stackis-rpn/id6752929114/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/check-split-and-tip-calculator/id6754619328/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 10 MB | 41 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Skimra](https://appshunter.io/developer/403502071) | [Raymond Rothwell](https://appshunter.io/developer/1848273847) |

## What reviewers say

### Stackis RPN

[App page](https://appshunter.io/ios/app/stackis-rpn/id6752929114)

A calculator designed for users who prefer Reverse Polish Notation (RPN). It offers a familiar interface for RPN users and includes support for duodecimal calculations.

**Highlights:** RPN calculation style, Duodecimal (dozenal) support, Familiar interface for RPN users, Simple and pleasant user experience

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Mode | $1.99 | one-time |


### Check Split and Tip Calculator

[App page](https://appshunter.io/ios/app/check-split-and-tip-calculator/id6754619328)

Effortlessly divide bills and calculate tips for group outings. Send payment requests instantly via popular apps. Customize settings for a personalized experience.

**Highlights:** Fast bill splitting, Automatic tax calculation, Quick tip buttons, Split 2-99 ways, Send payment requests, Works offline, Privacy focused

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SplitSecond Pay Pro | $2.99 | one-time |


## Frequently asked questions

### Is Stackis RPN free?

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

### Is Check Split and Tip Calculator free?

Check Split and Tip Calculator is free to download, with in-app purchases available.

### Which has better reviews, Stackis RPN or Check Split and Tip Calculator?

Stackis RPN and Check Split and Tip Calculator are both rated 5.0 out of 5 on the App Store, from 2 and 4 ratings respectively.

### Do Stackis RPN or Check Split and Tip Calculator have ads?

Neither Stackis RPN nor Check Split and Tip Calculator shows ads.

### Which is updated more often, Stackis RPN or Check Split and Tip Calculator?

Stackis RPN ships an update every 4 days, and Check Split and Tip Calculator every 3 weeks. Most recently, Stackis RPN was updated on November 5, 2026 and Check Split and Tip Calculator on November 5, 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.*