# LittleGray Calculator vs DB40X

The clearest difference is review sentiment: DB40X at 67% against LittleGray Calculator's 0%. DB40X also leads on price (Free vs $2.99) and rating (4.7 vs 2.0). LittleGray Calculator's advantage is iOS requirement (8.0 vs 14.0). On ads, in-app purchases and device support there is nothing between them.

DB40X is free to download; LittleGray Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DB40X holds the better App Store score, 4.7 against 2.0. 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. Written reviews point the same way: 0% of LittleGray Calculator's written reviews are positive against 67% of DB40X's.

LittleGray Calculator ships an update every 4 months, DB40X every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | LittleGray Calculator | DB40X |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/littlegray-calculator-infinity/id1393837500/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/db40x/id6624315901/reviews)** |
| Number of ratings | 1 | **7** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 16 MB | 7 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [峻 杨](https://appshunter.io/developer/1259658398) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### LittleGray Calculator

[App page](https://appshunter.io/ios/app/littlegray-calculator-infinity/id1393837500)

This advanced calculator handles large numbers and complex expressions with real-time calculations. Its columnar display shows the calculation process, and multiple keyboard layouts offer flexibility. Save and recall history, or sync across devices.

**Highlights:** High-precision large number calculations, Real-time custom function evaluation, Columnar display for process and results, Multiple keyboard layouts, History record function, iCloud cloud synchronization, Real-time voice input

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is LittleGray Calculator free?

LittleGray Calculator costs $2.99, with no in-app purchases.

### Is DB40X free?

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

### Which has better reviews, LittleGray Calculator or DB40X?

DB40X is rated higher. LittleGray Calculator averages 2.0 out of 5 from 1 ratings, while DB40X averages 4.7 from 7 ratings.

### Do LittleGray Calculator or DB40X have ads?

Neither LittleGray Calculator nor DB40X shows ads.

### Which is updated more often, LittleGray Calculator or DB40X?

LittleGray Calculator ships an update every 4 months, and DB40X every 3 weeks. Most recently, LittleGray Calculator was updated on October 24, 2026 and DB40X on October 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.*