# BIG CALCULATOR. vs CalcTabs

The clearest difference is in-app purchases: CalcTabs at none against BIG CALCULATOR.'s 1. BIG CALCULATOR.'s advantage is update cadence (every 3 weeks vs every 37 months). On price, ads, device support and iOS requirement there is nothing between them.

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

BIG CALCULATOR. ships an update every 3 weeks, CalcTabs every 37 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BIG CALCULATOR. | CalcTabs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (65 ratings)](https://appshunter.io/ios/app/big-calculator/id1114392920/reviews)** | — |
| Number of ratings | **65** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 37 months |
| Monetization | Ad-supported | — |
| Size | 13 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adysseus](https://appshunter.io/developer/447444997) | [Black Flame Digital LTD](https://appshunter.io/developer/1574229330) |

## 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 |


### CalcTabs

[App page](https://appshunter.io/ios/app/calctabs/id6467405854)

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

**In-app purchases:** none


## Frequently asked questions

### Is BIG CALCULATOR. free?

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

### Is CalcTabs free?

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

### Do BIG CALCULATOR. or CalcTabs have ads?

Both BIG CALCULATOR. and CalcTabs show ads.

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

BIG CALCULATOR. ships an update every 3 weeks, and CalcTabs every 37 months. Most recently, BIG CALCULATOR. was updated on November 2, 2026 and CalcTabs on October 30, 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.*