# Calta vs FuncNote

The clearest difference is in-app purchases: Calta at none against FuncNote's 2. Calta also leads on update cadence (every 3 days vs every 5 months) and iOS requirement (11.0 vs 17.0). FuncNote's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. FuncNote sells 2 in-app purchases, starting at $1.99 per month. Calta asks for nothing beyond the download.

Calta ships an update every 3 days, FuncNote every 5 months. The most recent releases landed on September 18, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Calta | FuncNote |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 5 months |
| Monetization | Ad-supported | — |
| Size | 23 MB | 26 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Hiroki Oka](https://appshunter.io/developer/1464653539) | [Satoshi Kobayashi](https://appshunter.io/developer/909987119) |

## What reviewers say

### Calta

[App page](https://appshunter.io/ios/app/calta/id1499265833)

This calculator app offers advanced features like equation display, calculation history, and redo/undo functionality for easier use. Customize backgrounds and button shapes, and perform tax calculations with adjustable rates. It supports up to 20 digits and respects order of operations.

**Highlights:** Equation display, Calculation history, Redo and Undo functions, Customizable background, Customizable button shape, Tax calculation, Order of operations support

**Features:** macOS Compatibility

**In-app purchases:** none


### FuncNote

[App page](https://appshunter.io/ios/app/funcnote/id1535937427)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro plan | $1.99 | per month |
| Pro plan | $19.99 | per year |


## Frequently asked questions

### Is Calta free?

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

### Is FuncNote free?

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

### Do Calta or FuncNote have ads?

Calta shows ads; FuncNote does not.

### Which is updated more often, Calta or FuncNote?

Calta ships an update every 3 days, and FuncNote every 5 months. Most recently, Calta was updated on September 18, 2026 and FuncNote on September 24, 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.*