# Big Number Calculator+ vs MasterTech Academy

The clearest difference is update cadence: MasterTech Academy at every 2 days against Big Number Calculator+'s every 4 months. Big Number Calculator+'s advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Big Number Calculator+ ships an update every 4 months, MasterTech Academy every 2 days. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Big Number Calculator+ | MasterTech Academy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/big-number-calculator-plus/id1541255205/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 19 MB | 26 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Kunio Takeuchi](https://appshunter.io/developer/851499887) | [DARION LAMAR BRITT](https://appshunter.io/developer/6798736867) |

## What reviewers say

### Big Number Calculator+

[App page](https://appshunter.io/ios/app/big-number-calculator-plus/id1541255205)

Perform calculations with extremely large numbers, up to 66,000 digits. Supports addition, subtraction, multiplication, and division, with options for different calculation engines and data input methods. Results can be saved and printed in formatted text files.

**Highlights:** Handles up to 66,000 digits, Addition, subtraction, multiplication, division, Selectable calculation engines (Swift, Objective-C), Load data from files (txt, rtf, rtfd), Automatic data formatting for printing and saving, Customizable number separators

**Features:** Vision Pro support

**In-app purchases:** none


### MasterTech Academy

[App page](https://appshunter.io/ios/app/mastertech-academy/id6802441532)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Big Number Calculator+ free?

Big Number Calculator+ is free to download, with no in-app purchases.

### Is MasterTech Academy free?

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

### Do Big Number Calculator+ or MasterTech Academy have ads?

Neither Big Number Calculator+ nor MasterTech Academy shows ads.

### Which is updated more often, Big Number Calculator+ or MasterTech Academy?

Big Number Calculator+ ships an update every 4 months, and MasterTech Academy every 2 days. Most recently, Big Number Calculator+ was updated on October 13, 2026 and MasterTech Academy on October 4, 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.*