# DB40X vs Calc

The clearest difference is rating: Calc at 5.0 against DB40X's 4.7. DB40X's advantage is ratings volume (7 vs 1) and iOS requirement (14.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calc holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: DB40X has 7 ratings behind it against 1, so its average is the more settled of the two.

DB40X ships an update every 3 weeks, Calc fortnightly. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | DB40X | Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (7 ratings)](https://appshunter.io/ios/app/db40x/id6624315901/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calc-u-59/id6761413142/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 7 MB | 9 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) | [Martin Erzberger](https://appshunter.io/developer/1889469770) |

## 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


### Calc

[App page](https://appshunter.io/ios/app/calc-u-59/id6761413142)

Explore the inner workings of classic TI-59, TI-58, and TI-58C calculators. This tool offers cycle-accurate emulation, a debugger to inspect code and registers, and a functional paper tape printer recreation. Load and save programs using magnetic card emulation and state files.

**Highlights:** Cycle-accurate TMC0501 processor emulation, Integrated debugger for program and register inspection, Functional PC-100C paper tape printer recreation, Magnetic card reader for loading/saving programs, State file loading for instant machine configuration, Solid State Module support

**In-app purchases:** none


## Frequently asked questions

### Is DB40X free?

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

### Is Calc free?

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

### Which has better reviews, DB40X or Calc?

Calc is rated higher. DB40X averages 4.7 out of 5 from 7 ratings, while Calc averages 5.0 from 1 ratings.

### Do DB40X or Calc have ads?

Neither DB40X nor Calc shows ads.

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

DB40X ships an update every 3 weeks, and Calc fortnightly. Most recently, DB40X was updated on October 3, 2026 and Calc on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*