# i41CX vs Poly Connect

The clearest difference is price: Poly Connect at Free against i41CX's $7.99. Poly Connect also leads on in-app purchases (none vs 4) and update cadence (every 2 days vs every 5 weeks). On ads, device support and iOS requirement there is nothing between them.

Poly Connect is free to download; i41CX costs $7.99 up front. i41CX sells 4 one-off in-app purchases. Poly Connect asks for nothing beyond the download.

i41CX ships an update every 5 weeks, Poly Connect every 2 days. The most recent releases landed on September 25, 2026 and March 26, 2026 respectively.

## The numbers

| Metric | i41CX | Poly Connect |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/i41cx/id292619450/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 27 MB |
| Requires iOS | 13.0 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [Instance IT Solutions](https://appshunter.io/developer/1378931704) |

## What reviewers say

### i41CX

[App page](https://appshunter.io/ios/app/i41cx/id292619450)

This app offers a powerful RPN scientific calculator experience, functionally equivalent to a renowned model. It provides extensive memory registers, over 300 built-in functions, and programmability. Advanced features can be unlocked via in-app purchases.

**Highlights:** RPN logic with 4-element stack, 319 main and 124 extended memory registers, Over 300 built-in functions, Programmable up to 2000 lines, User-definable keyboard, Bluetooth keyboard support, Device integration features

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Overlays Upgrade | $2.99 | one-time |
| Printer Upgrade | $3.99 | one-time |
| CAS Upgrade | $7.99 | one-time |
| i41CX+ Features Upgrade | $17.99 | one-time |


### Poly Connect

[App page](https://appshunter.io/ios/app/poly-connect/id1550719405)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i41CX free?

i41CX costs $7.99, and also offers in-app purchases.

### Is Poly Connect free?

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

### Do i41CX or Poly Connect have ads?

Neither i41CX nor Poly Connect shows ads.

### Which is updated more often, i41CX or Poly Connect?

i41CX ships an update every 5 weeks, and Poly Connect every 2 days. Most recently, i41CX was updated on September 25, 2026 and Poly Connect on March 26, 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.*