# i41CX vs ClevCalc

The clearest difference is price: ClevCalc at Free against i41CX's $7.99. ClevCalc also leads on ratings volume (14K vs 45). i41CX's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.0). On rating, review sentiment, update cadence and in-app purchases there is nothing between them.

ClevCalc is free to download; i41CX costs $7.99 up front. i41CX sells 4 one-off in-app purchases and ClevCalc sells 3 in-app purchases, starting at $2.99 per month. 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 4.7 for ClevCalc. That said, the two scores are not equally well evidenced: ClevCalc has 14K ratings behind it against 45, so its average is the more settled of the two. Written reviews split almost evenly too, at 90% and 91% positive.

i41CX ships an update every 5 weeks, ClevCalc monthly. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | i41CX | ClevCalc |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | [4.6 (45 ratings)](https://appshunter.io/ios/app/i41cx/id292619450/reviews) | **[4.7 (14K ratings)](https://appshunter.io/ios/app/clevcalc-calculator/id1221235593/reviews)** |
| Number of ratings | 45 | **14K** |
| Positive reviews | 90.5% of reviews | **91.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 134 MB | 117 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [Cleveni Inc.](https://appshunter.io/developer/1221235592) |

## 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 |


### ClevCalc

[App page](https://appshunter.io/ios/app/clevcalc-calculator/id1221235593)

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

**Highlights:** Scientific calculator, Unit converter, Currency converter, Loan calculator, Health calculator (BMI, BMR), Date calculator, GPA calculator

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $2.99 | per month |
| Premium Subscription | $24.99 | per year |
| Premium version | $13.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient calculations
- 💡 Versatile features (currency, unit conversions, etc.)
- 👍 Intuitive interface
- 👍 Helpful for daily tasks

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔍 Ads can be intrusive
- 🐛 Occasional UI issues (e.g. ads blocking functionality)
- 🔍 Lack of advanced features (e.g. RPN mode, binary calculator)

**Reported bugs**

- Keystrokes not always registering
- Compatibility issues with older devices

**Requested features**

- Dark mode option
- Ability to save/recall calculations
- More customization options
- Integration with other apps/platforms


## Frequently asked questions

### Is i41CX free?

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

### Is ClevCalc free?

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

### Which has better reviews, i41CX or ClevCalc?

ClevCalc is rated higher. i41CX averages 4.6 out of 5 from 45 ratings, while ClevCalc averages 4.7 from 14K ratings.

### Do i41CX or ClevCalc have ads?

ClevCalc shows ads; i41CX does not.

### Which is updated more often, i41CX or ClevCalc?

i41CX ships an update every 5 weeks, and ClevCalc monthly. Most recently, i41CX was updated on September 21, 2026 and ClevCalc on September 24, 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.*