# i41CX vs KobCard

The clearest difference is price: KobCard at Free against i41CX's $7.99. KobCard also leads on in-app purchases (none vs 4). i41CX's advantage is rating (4.6 vs 4.0). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

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

i41CX holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 45 and 62 respectively. Written reviews point the same way: 90% of i41CX's written reviews are positive against 83% of KobCard's.

i41CX ships an update every 5 weeks, KobCard every 3 weeks. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | i41CX | KobCard |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/i41cx/id292619450/reviews)** | [4.0 (62 ratings)](https://appshunter.io/ios/app/kobcard/id6743365807/reviews) |
| Number of ratings | 45 | **62** |
| Positive reviews | **90.5% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 134 MB | 44 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 17+ |
| Developer | [Antonio Lagana](https://appshunter.io/developer/289068868) | [KOB MARKETING](https://appshunter.io/developer/1851489278) |

## 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 |


### KobCard

[App page](https://appshunter.io/ios/app/kobcard/id6743365807)

This app serves as a comprehensive platform for gift card information. It offers real-time exchange rates, price calculations, and the latest news related to gift cards, assisting users in buying, selling, or staying informed.

**Highlights:** Real-time gift card exchange rates, Gift card price calculation, Latest gift card news updates, Information for buying and selling gift cards

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i41CX free?

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

### Is KobCard free?

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

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

i41CX is rated higher. i41CX averages 4.6 out of 5 from 45 ratings, while KobCard averages 4.0 from 62 ratings.

### Do i41CX or KobCard have ads?

Neither i41CX nor KobCard shows ads.

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

i41CX ships an update every 5 weeks, and KobCard every 3 weeks. Most recently, i41CX was updated on September 21, 2026 and KobCard on September 19, 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.*