# DB40X vs ECAP

The clearest difference is in-app purchases: DB40X at none against ECAP's 3. ECAP's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ECAP sells 3 in-app purchases, starting at $4.99 per 7 days. DB40X asks for nothing beyond the download.

DB40X ships an update every 3 weeks, ECAP every 3 days. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | DB40X | ECAP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/db40x/id6624315901/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Free | — |
| Size | 7 MB | 33 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) | [VEGARD HELLAND BU](https://appshunter.io/developer/6780784892) |

## What reviewers say

### DB40X

[App page](https://appshunter.io/ios/app/db40x/id6624315901)

A high-precision scientific calculator inspired by the HP48 series, offering arbitrary precision computations, complex numbers, vectors, matrices, and graphing. It supports RPN and algebraic operations, with over 1000 built-in functions and a hyperlinked help system.

**Highlights:** Arbitrary precision computations, RPN and algebraic operations, Complex numbers, vectors, and matrices, Graphing and plotting, Engineering units and conversions, Hyperlinked help system

**Features:** macOS Compatibility

**In-app purchases:** none


### ECAP

[App page](https://appshunter.io/ios/app/ecap-electrical-docs/id6780784890)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECAP Pro | $4.99 | per 7 days |
| ECAP Pro | $12.99 | per month |
| ECAP Pro | $89.99 | per year |


## Frequently asked questions

### Is DB40X free?

DB40X is free to download, with no in-app purchases.

### Is ECAP free?

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

### Do DB40X or ECAP have ads?

Neither DB40X nor ECAP shows ads.

### Which is updated more often, DB40X or ECAP?

DB40X ships an update every 3 weeks, and ECAP every 3 days. Most recently, DB40X was updated on October 3, 2026 and ECAP on September 29, 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.*