# Calc+α vs Calta

The clearest difference is review sentiment: Calta at 100% against Calc+α's 0%. Calta also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (11.0 vs 16.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Calc+α ships an update every 3 weeks, Calta every 3 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Calc+α | Calta |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 9 MB | 23 MB |
| Requires iOS | 16.4 | **11.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ariane Inc.](https://appshunter.io/developer/449595295) | [Hiroki Oka](https://appshunter.io/developer/1464653539) |

## What reviewers say

### Calc+α

[App page](https://appshunter.io/ios/app/calc-plus/id1454376672)

This utility app simplifies daily calculations with an intuitive interface. It features a history of your calculations, allows for easy editing and recalculation, and provides convenient tax and division functions. Organize your finances and avoid manual note-taking.

**Highlights:** Calculation history and review, Edit past calculations and recalculate, Tax-inclusive and exclusive calculation modes, Standard and reduced tax rate switching, Clear division and remainder display, Create and copy calculation sheets

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Calc+α free?

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

### Is Calta free?

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

### Do Calc+α or Calta have ads?

Both Calc+α and Calta show ads.

### Which is updated more often, Calc+α or Calta?

Calc+α ships an update every 3 weeks, and Calta every 3 days. Most recently, Calc+α was updated on November 2, 2026 and Calta on November 3, 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.*