# Calculator++F vs Oaiko

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

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

Calculator++F ships an update every 2 months, Oaiko weekly. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Calculator++F | Oaiko |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (22 ratings)](https://appshunter.io/ios/app/calculator-plus-plus-f/id1070080614/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 71.2% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 71 MB | 9 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YUTAKA KENJO](https://appshunter.io/developer/1070080613) | [yohaku株式会社](https://appshunter.io/developer/1868149580) |

## What reviewers say

### Calculator++F

[App page](https://appshunter.io/ios/app/calculator-plus-plus-f/id1070080614)

This app allows for complex calculations using expressions, with one-touch discount and tax calculations. It automatically saves your calculation history for easy review and reuse, making everyday financial tasks efficient.

**Highlights:** Expression-based calculations, One-touch discount and tax calculation, Automatic calculation history, Reuse historical expressions, Memory function, Mini-game for mental exercise

**In-app purchases:** none


### Oaiko

[App page](https://appshunter.io/ios/app/oaiko/id6777382793)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator++F free?

Calculator++F is free to download, with no in-app purchases.

### Is Oaiko free?

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

### Do Calculator++F or Oaiko have ads?

Calculator++F shows ads; Oaiko does not.

### Which is updated more often, Calculator++F or Oaiko?

Calculator++F ships an update every 2 months, and Oaiko weekly. Most recently, Calculator++F was updated on November 11, 2026 and Oaiko on November 5, 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.*