# Big Number Calculator+ vs Modo

The clearest difference is review sentiment: Modo at 57% against Big Number Calculator+'s 0%. Modo also leads on rating (4.2 vs 3.7) and update cadence (every 3 weeks vs every 4 months). Big Number Calculator+'s advantage is in-app purchases (none vs 3) and ads (none vs shown). On price there is nothing between them.

Both are free to download. Modo sells 3 in-app purchases, starting at $3.99 per month. Big Number Calculator+ asks for nothing beyond the download.

Modo holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: Modo has 36 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Big Number Calculator+'s written reviews are positive against 57% of Modo's.

Big Number Calculator+ ships an update every 4 months, Modo every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Big Number Calculator+ | Modo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/big-number-calculator-plus/id1541255205/reviews) | **[4.2 (36 ratings)](https://appshunter.io/ios/app/modo-intermediate-spanish/id6754576281/reviews)** |
| Number of ratings | 3 | **36** |
| Positive reviews | 0.0% of reviews | **57.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 29 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kunio Takeuchi](https://appshunter.io/developer/851499887) | [Wise Ventures B.V.](https://appshunter.io/developer/1849005309) |

## 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


### Modo

[App page](https://appshunter.io/ios/app/modo-intermediate-spanish/id6754576281)

Master the Spanish subjunctive through contextual learning and AI feedback. This app offers custom practice sessions and clear explanations to help you speak Spanish confidently and naturally.

**Highlights:** Learn through native-style sentences, Custom practice sessions, Instant AI feedback, Advanced progress insights, Clear grammar explanations

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite - Monthly | $3.99 | per month |
| Pro - Monthly | $12.99 | per month |
| Pro - Yearly | $99.99 | per year |


## Frequently asked questions

### Is Big Number Calculator+ free?

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

### Is Modo free?

Modo is free to download, with in-app purchases available.

### Which has better reviews, Big Number Calculator+ or Modo?

Modo is rated higher. Big Number Calculator+ averages 3.7 out of 5 from 3 ratings, while Modo averages 4.2 from 36 ratings.

### Do Big Number Calculator+ or Modo have ads?

Modo shows ads; Big Number Calculator+ does not.

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

Big Number Calculator+ ships an update every 4 months, and Modo every 3 weeks. Most recently, Big Number Calculator+ was updated on October 24, 2026 and Modo 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.*