# The Talking Calculator vs Octodecuple Calc

The clearest difference is in-app purchases: Octodecuple Calc at none against The Talking Calculator's 1. Octodecuple Calc also leads on update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

The Talking Calculator ships an update every 3 months, Octodecuple Calc every 2 weeks. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | The Talking Calculator | Octodecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (5 ratings)](https://appshunter.io/ios/app/the-talking-calculator/id1087367680/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 36 MB |
| Requires iOS | **14.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roundhouse Software LLC](https://appshunter.io/developer/1087367679) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### The Talking Calculator

[App page](https://appshunter.io/ios/app/the-talking-calculator/id1087367680)

This basic calculator speaks mathematical functions aloud as they are entered and calculated. It's a helpful learning tool for students and individuals who have speech difficulties. Supports English and Spanish, and works on iPhone and iPad.

**Highlights:** Speaks mathematical functions, Supports English and Spanish, Customizable speech rate, Works on iPhone and iPad, Split screen multitasking support, Dark mode display

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Upgrade - Remove Ads | $0.99 | 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 The Talking Calculator free?

The Talking Calculator 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 The Talking Calculator or Octodecuple Calc have ads?

Both The Talking Calculator and Octodecuple Calc show ads.

### Which is updated more often, The Talking Calculator or Octodecuple Calc?

The Talking Calculator ships an update every 3 months, and Octodecuple Calc every 2 weeks. Most recently, The Talking Calculator was updated on September 30, 2026 and Octodecuple Calc on October 10, 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.*