# Focus Stacks vs DB48X

The clearest difference is update cadence: Focus Stacks at weekly against DB48X's every 3 weeks. Focus Stacks also leads on rating (5.0 vs 4.8). DB48X's advantage is ratings volume (4 vs 1) and iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Focus Stacks costs $4.99 and DB48X $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Focus Stacks holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Focus Stacks ships an update weekly, DB48X every 3 weeks. The most recent releases landed on September 6, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Focus Stacks | DB48X |
| --- | --- | --- |
| Price | $4.99 | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/focus-stacks/id6478795096/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/db48x/id6615086535/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Paid | Paid |
| Size | 1 MB | 7 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, Vision Pro | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Despres](https://appshunter.io/developer/1525630876) | [Christophe de Dinechin](https://appshunter.io/developer/1761608161) |

## What reviewers say

### Focus Stacks

[App page](https://appshunter.io/ios/app/focus-stacks/id6478795096)

Organize your tasks and ideas with a visually appealing, card-based system. Capture everything, customize with colors, add detailed notes, and sync across devices. Never let a task or idea slip away again.

**Highlights:** Capture every task easily, Customize lists with colors, Attach detailed notes to tasks, Automatic iCloud syncing, Card-based design

**Features:** macOS Compatibility

**In-app purchases:** none


### DB48X

[App page](https://appshunter.io/ios/app/db48x/id6615086535)

This advanced scientific calculator offers arbitrary precision computations, RPN and algebraic operations, and extensive graphing capabilities. It supports complex numbers, matrices, symbolic calculations, and over 1000 built-in functions, inspired by the HP48 series.

**Highlights:** Arbitrary precision computations, RPN and algebraic operations, Complex numbers, vectors, and matrices, Symbolic computations and numerical solving, Graphing and plotting, Engineering units and currency conversion, Built-in hyperlinked help system

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

**In-app purchases:** none


## Frequently asked questions

### Is Focus Stacks free?

Focus Stacks costs $4.99, with no in-app purchases.

### Is DB48X free?

DB48X costs $4.99, with no in-app purchases.

### Which has better reviews, Focus Stacks or DB48X?

Focus Stacks is rated higher. Focus Stacks averages 5.0 out of 5 from 1 ratings, while DB48X averages 4.8 from 4 ratings.

### Do Focus Stacks or DB48X have ads?

Neither Focus Stacks nor DB48X shows ads.

### Which is updated more often, Focus Stacks or DB48X?

Focus Stacks ships an update weekly, and DB48X every 3 weeks. Most recently, Focus Stacks was updated on September 6, 2026 and DB48X on September 10, 2026.

---

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