# Zip File vs Stackis RPN

The clearest difference is rating: Stackis RPN at 5.0 against Zip File's 2.3. Stackis RPN also leads on update cadence (every 4 days vs every 6 months) and monetization model (free vs free with in-app purchases). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Zip File sells 3 in-app purchases, starting at $4.99 per 7 days and Stackis RPN sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Stackis RPN holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Zip File ships an update every 6 months, Stackis RPN every 4 days. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Zip File | Stackis RPN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/zip-file-zip-unzip-protect/id6749278269/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stackis-rpn/id6752929114/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 10 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fenuku Kekeli](https://appshunter.io/developer/1822419894) | [Skimra](https://appshunter.io/developer/403502071) |

## What reviewers say

### Zip File

[App page](https://appshunter.io/ios/app/zip-file-zip-unzip-protect/id6749278269)

Compress, extract, and organize various file formats like .zip, .rar, and .7z. This tool offers a secure and simple way to manage your files on the go, with premium features available through subscription.

**Highlights:** Compress and extract files, Support for .zip, .rar, .7z formats, File organization, Secure file handling, Manage subscriptions

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access for a week | $4.99 | per 7 days |
| All Access for a month | $4.99 | per month |
| All Access for a year | $24.99 | per year |


### 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 |


## Frequently asked questions

### Is Zip File free?

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

### Is Stackis RPN free?

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

### Which has better reviews, Zip File or Stackis RPN?

Stackis RPN is rated higher. Zip File averages 2.3 out of 5 from 3 ratings, while Stackis RPN averages 5.0 from 2 ratings.

### Do Zip File or Stackis RPN have ads?

Neither Zip File nor Stackis RPN shows ads.

### Which is updated more often, Zip File or Stackis RPN?

Zip File ships an update every 6 months, and Stackis RPN every 4 days. Most recently, Zip File was updated on October 25, 2026 and Stackis RPN on October 12, 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.*