# Calculator vs InkBoard

The clearest difference is ads: InkBoard at none against Calculator's shown. InkBoard also leads on update cadence (every 4 days vs every 2 months). Calculator's advantage is iOS requirement (15.0 vs 18.5). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Calculator sells 4 in-app purchases, starting at $2.49 per month and InkBoard sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Calculator ships an update every 2 months, InkBoard every 4 days. The most recent releases landed on October 12, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Calculator | InkBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (200 ratings)](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072/reviews)** | — |
| Number of ratings | **200** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 36 MB | 4 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Ananta Technology Co., Ltd.](https://appshunter.io/developer/1508854889) | [Lawrence Tsui](https://appshunter.io/developer/1830221428) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072)

This app combines basic, scientific, currency, and unit conversion tools into a single, powerful calculator. It offers features like history records, number speech, and seamless result inheritance across different calculator types for an efficient workflow.

**Highlights:** Basic and scientific calculations, Currency converter with 150+ currencies, Units converter for various measurements, History records with save, copy, and paste, Number speech for input accuracy, Seamless result inheritance across calculators, Offline usage and customizable themes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership - 1 Month | $2.49 | per month |
| Premium Monthly Pro | $2.49 | per month |
| Premium Membership - 1 Week | $2.49 | per 7 days |
| Premium Membership - 1 Year | $26.99 | per year |


### InkBoard

[App page](https://appshunter.io/ios/app/inkboard/id6755365313)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inkboard | $1.99 | one-time |


## Frequently asked questions

### Is Calculator free?

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

### Is InkBoard free?

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

### Do Calculator or InkBoard have ads?

Calculator shows ads; InkBoard does not.

### Which is updated more often, Calculator or InkBoard?

Calculator ships an update every 2 months, and InkBoard every 4 days. Most recently, Calculator was updated on October 12, 2026 and InkBoard on September 26, 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.*