# BIG CALCULATOR. vs Hidden calc

The clearest difference is in-app purchases: Hidden calc at none against BIG CALCULATOR.'s 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. BIG CALCULATOR. sells 1 in-app purchase, starting at $2.99 per year. Hidden calc asks for nothing beyond the download.

BIG CALCULATOR. ships an update every 3 weeks, Hidden calc every 2 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | BIG CALCULATOR. | Hidden calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (70 ratings)](https://appshunter.io/ios/app/big-calculator/id1114392920/reviews)** | — |
| Number of ratings | **70** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 13 MB | 35 MB |
| Requires iOS | **15.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### BIG CALCULATOR.

[App page](https://appshunter.io/ios/app/big-calculator/id1114392920)

This utility app offers a straightforward and visually clear calculator experience, ideal for users of all ages. Its large numbers and dark interface enhance readability, while landscape mode support on iPhones and iPads provides added convenience.

**Highlights:** Large numbers for easy viewing, Simple and easy-to-see interface, Landscape mode support, Dark UI for eye comfort, Suitable for all ages

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Big Calculator Plus | $2.99 | per year |


### Hidden calc

[App page](https://appshunter.io/ios/app/hidden-calc/id6502871727)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BIG CALCULATOR. free?

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

### Is Hidden calc free?

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

### Do BIG CALCULATOR. or Hidden calc have ads?

Both BIG CALCULATOR. and Hidden calc show ads.

### Which is updated more often, BIG CALCULATOR. or Hidden calc?

BIG CALCULATOR. ships an update every 3 weeks, and Hidden calc every 2 weeks. Most recently, BIG CALCULATOR. was updated on November 6, 2026 and Hidden calc on November 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.*