# Nexus universal calculator vs 2sBrain

The clearest difference is in-app purchases: 2sBrain at none against Nexus universal calculator's 3. 2sBrain also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Nexus universal calculator sells 3 in-app purchases, starting at $2.99 per month. 2sBrain asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Nexus universal calculator | 2sBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/nexus-universal-calculator/id6746715232/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 66 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nataliia Vereshchak](https://appshunter.io/developer/1818074298) | [Nguyen Nhu Vuong](https://appshunter.io/developer/1486864462) |

## What reviewers say

### Nexus universal calculator

[App page](https://appshunter.io/ios/app/nexus-universal-calculator/id6746715232)

A smart calculator that remembers your calculations, allows you to reuse results in new formulas, and includes unit and currency conversion. It offers cloud sync for seamless access across devices and a clean design for everyday use, budgeting, and studying.

**Highlights:** Calculator with history, Smart formula builder, Unit and currency converter, Cloud sync across devices, Clean and simple design, Reuse past results as variables

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Month | $2.99 | per month |
| Premium year | $9.99 | per year |
| Lifetime Premium Features | $199.00 | one-time |


### 2sBrain

[App page](https://appshunter.io/ios/app/2sbrainai-pdf-document-reader/id6768344372)

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

**In-app purchases:** none


## Frequently asked questions

### Is Nexus universal calculator free?

Nexus universal calculator is free to download, with in-app purchases available.

### Is 2sBrain free?

2sBrain is free to download, with no in-app purchases.

### Do Nexus universal calculator or 2sBrain have ads?

Nexus universal calculator shows ads; 2sBrain does not.

### Which is updated more often, Nexus universal calculator or 2sBrain?

Nexus universal calculator ships an update weekly, and 2sBrain weekly. Most recently, Nexus universal calculator was updated on June 1, 2026 and 2sBrain on September 8, 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.*