# i41CX vs DB50X

The clearest difference is in-app purchases: DB50X at none against i41CX's 4. DB50X also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 90%). i41CX's advantage is ratings volume (45 vs 8) and price ($7.99 vs $9.99). On update cadence, ads, chart position and device support there is nothing between them.

i41CX costs $7.99 and DB50X $9.99 up front. i41CX sells 4 one-off in-app purchases. DB50X asks for nothing beyond the download.

DB50X holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: i41CX has 45 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 90% of i41CX's written reviews are positive against 100% of DB50X's.

i41CX ships an update every 5 weeks, DB50X every 3 weeks. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | i41CX | DB50X |
| --- | --- | --- |
| Price | **$7.99** | $9.99 |
| Rating | [4.6 (45 ratings)](https://appshunter.io/ios/app/i41cx/id292619450/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/db50x/id6625971367/reviews)** |
| Number of ratings | **45** | 8 |
| Positive reviews | 90.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#177** | #189 |
| Size | 135 MB | 7 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### i41CX

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

**Currently charting:** #177 Top Paid · Productivity (US App Store)

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 |


### DB50X

[App page](https://appshunter.io/ios/app/db50x/id6625971367)

**Currently charting:** #189 Top Paid · Productivity (US App Store)

This scientific calculator offers high-precision computations with arbitrary precision for numbers. It supports advanced functions like complex numbers, matrices, symbolic calculations, and graphing, with a user-friendly interface and extensive built-in help.

**Highlights:** Arbitrary precision calculations, RPN and algebraic operations, Complex numbers, vectors, matrices, Symbolic and numerical solving, Graphing and plotting, Engineering units and constants, Unicode text support

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

**In-app purchases:** none


## Frequently asked questions

### Is i41CX free?

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

### Is DB50X free?

DB50X costs $9.99, with no in-app purchases.

### Which has better reviews, i41CX or DB50X?

DB50X is rated higher. i41CX averages 4.6 out of 5 from 45 ratings, while DB50X averages 5.0 from 8 ratings.

### Do i41CX or DB50X have ads?

Neither i41CX nor DB50X shows ads.

### Which is updated more often, i41CX or DB50X?

i41CX ships an update every 5 weeks, and DB50X every 3 weeks. Most recently, i41CX was updated on October 21, 2026 and DB50X on October 11, 2026.

### Which is more popular, i41CX or DB50X?

i41CX currently peaks at #177 in the App Store charts, and DB50X at #189. Chart position reflects recent download velocity rather than total install base.

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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.*