# i41CX vs Calculator´

The clearest difference is price: Calculator´ at Free against i41CX's $7.99. Calculator´ also leads on ratings volume (465 vs 45). i41CX's advantage is review sentiment (90% vs 68%). On rating, update cadence, ads and in-app purchases there is nothing between them.

Calculator´ is free to download; i41CX costs $7.99 up front. i41CX sells 4 one-off in-app purchases and Calculator´ sells 4 in-app purchases, starting at $0.49 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for i41CX against 4.6 for Calculator´. That said, the two scores are not equally well evidenced: Calculator´ has 465 ratings behind it against 45, so its average is the more settled of the two. Written reviews are what separate them: 90% of i41CX's written reviews are positive against 68% of Calculator´'s.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | i41CX | Calculator´ |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | [4.6 (45 ratings)](https://appshunter.io/ios/app/i41cx/id292619450/reviews) | [4.6 (465 ratings)](https://appshunter.io/ios/app/calculator/id878851717/reviews) |
| Number of ratings | 45 | **465** |
| Positive reviews | **90.5% of reviews** | 67.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 134 MB | 13 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | +4 | 4+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [Oval Software Oy](https://appshunter.io/developer/1438258178) |

## 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 |


### Calculator´

[App page](https://appshunter.io/ios/app/calculator/id878851717)

This app is a powerful and intelligent calculator with a smart UI and live results. It offers basic, advanced, and scientific functions, a history log, customizable themes, and user-definable functions. It also includes features like an on-screen timer and iPad multitasking support.

**Highlights:** Live results and natural feel UI, User-definable advanced functions, History log with easy access, Customizable themes and colors, On-screen timer, iPad multitasking and Spotlight search

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard features w/ Free Week | $0.49 | per year |
| Standard features w/ Free Year | $0.49 | per year |
| Complete feature-set | $3.99 | per year |
| Converter + Graphing | $3.99 | one-time |

**What reviewers like**

- 👍 Clean and intuitive user interface
- 🚀 Fast and efficient performance
- 📊 Shows calculation progression like paper tape
- 🎨 Customizable appearance and themes
- 📱 Works well as iPhone/iPad replacement for default calculator

**What reviewers complain about**

- 💰 Switched to subscription model from free/one-time purchase
- 😤 Bait-and-switch pricing strategy
- 🔐 Paywall on basic features like clear button
- 📺 Ads and pop-ups introduced
- ⚠️ Removed features after update

**Reported bugs**

- Buttons below numbers 1, 2, 3 not responding
- App crashes when screen fills with numbers
- Numbers deleted backwards after full screen
- Swipe down converter doesn't work properly on iPad
- Pressing equals multiple times adds duplicate results

**Requested features**

- Haptic feedback support
- Fraction calculation support
- RPN mode
- iCloud sync for history
- Automatic parentheses


## Frequently asked questions

### Is i41CX free?

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

### Is Calculator´ free?

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

### Which has better reviews, i41CX or Calculator´?

i41CX and Calculator´ are both rated 4.6 out of 5 on the App Store, from 45 and 465 ratings respectively.

### Do i41CX or Calculator´ have ads?

Neither i41CX nor Calculator´ shows ads.

### Which is updated more often, i41CX or Calculator´?

i41CX ships an update every 5 weeks, and Calculator´ every 5 weeks. Most recently, i41CX was updated on September 21, 2026 and Calculator´ on September 22, 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.*