# Basic Calc Plus vs Calta

The clearest difference is update cadence: Calta at every 3 days against Basic Calc Plus's every 17 months. Calta also leads on iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Basic Calc Plus ships an update every 17 months, Calta every 3 days. The most recent releases landed on October 3, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Basic Calc Plus | Calta |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 3 days** |
| Monetization | — | Ad-supported |
| Size | 5 MB | 23 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Osamu Ishigami](https://appshunter.io/developer/901265058) | [Hiroki Oka](https://appshunter.io/developer/1464653539) |

## What reviewers say

### Basic Calc Plus

[App page](https://appshunter.io/ios/app/basic-calc-plus/id926102502)

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

**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 Basic Calc Plus free?

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

### Is Calta free?

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

### Do Basic Calc Plus or Calta have ads?

Both Basic Calc Plus and Calta show ads.

### Which is updated more often, Basic Calc Plus or Calta?

Basic Calc Plus ships an update every 17 months, and Calta every 3 days. Most recently, Basic Calc Plus was updated on October 3, 2026 and Calta on September 18, 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.*