# bcRPN vs Expoll

The clearest difference is in-app purchases: bcRPN at none against Expoll's 4. Expoll's advantage is update cadence (every 2 months vs every 22 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Expoll sells 4 one-off in-app purchases. bcRPN asks for nothing beyond the download.

bcRPN ships an update every 22 months, Expoll every 2 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | bcRPN | Expoll |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/bcrpn/id1614744829/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 0 MB | 7 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Wilkins](https://appshunter.io/developer/1614739840) | [Tom Arlt](https://appshunter.io/developer/1611137664) |

## What reviewers say

### bcRPN

[App page](https://appshunter.io/ios/app/bcrpn/id1614744829)

This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.

**Highlights:** Reverse Polish Notation (RPN) input, Complex number calculations, Extended precision math, Unlimited stack depth, Undo functionality (up to 10 operations)

**Features:** macOS Compatibility

**In-app purchases:** none


### Expoll

[App page](https://appshunter.io/ios/app/expoll/id1639799209)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffebreak for Developer | $0.99 | one-time |
| Developer Cake Break | $2.99 | one-time |
| A whole cake as donation | $9.99 | one-time |
| Very generous Donation | $19.99 | one-time |


## Frequently asked questions

### Is bcRPN free?

bcRPN is free to download, with no in-app purchases.

### Is Expoll free?

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

### Do bcRPN or Expoll have ads?

Neither bcRPN nor Expoll shows ads.

### Which is updated more often, bcRPN or Expoll?

bcRPN ships an update every 22 months, and Expoll every 2 months. Most recently, bcRPN was updated on November 3, 2026 and Expoll on November 7, 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.*