# MegaCalcBox vs Octodecuple Calc

The clearest difference is in-app purchases: Octodecuple Calc at none against MegaCalcBox's 1. Octodecuple Calc also leads on update cadence (every 2 weeks vs every 2 months). MegaCalcBox's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. MegaCalcBox sells 1 one-off in-app purchase. Octodecuple Calc asks for nothing beyond the download.

MegaCalcBox ships an update every 2 months, Octodecuple Calc every 2 weeks. The most recent releases landed on August 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | MegaCalcBox | Octodecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/megacalcbox-multi-calculator/id405755454/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 88.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 12 MB | 36 MB |
| Requires iOS | 16.6 | **15.8.3** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Kind Park LLC](https://appshunter.io/developer/1887561843) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### MegaCalcBox

[App page](https://appshunter.io/ios/app/megacalcbox-multi-calculator/id405755454)

This app offers over 35 professional calculators for finance, travel, health, utilities, and more. It features a clean design, smart tools like favorites and instant results, and operates completely offline with no data collection.

**Highlights:** 35+ professional calculators, Financial, travel, health, and utility tools, Offline operation, Smart features (favorites, instant results), Clean interface with dark mode, No ads or data collection

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MegaCalcBox Pro | $1.99 | one-time |


### Octodecuple Calc

[App page](https://appshunter.io/ios/app/octodecuple-calc/id6742386286)

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

**In-app purchases:** none


## Frequently asked questions

### Is MegaCalcBox free?

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

### Is Octodecuple Calc free?

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

### Do MegaCalcBox or Octodecuple Calc have ads?

Octodecuple Calc shows ads; MegaCalcBox does not.

### Which is updated more often, MegaCalcBox or Octodecuple Calc?

MegaCalcBox ships an update every 2 months, and Octodecuple Calc every 2 weeks. Most recently, MegaCalcBox was updated on August 1, 2026 and Octodecuple Calc on September 23, 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.*