# 係数計算機 vs 割引計算・消費税計算

The clearest difference is update cadence: 係数計算機 at every 2 months against 割引計算・消費税計算's every 4 months. 係数計算機 also leads on price ($1.99 vs $2.99). 割引計算・消費税計算's advantage is iOS requirement (9.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

係数計算機 costs $1.99 and 割引計算・消費税計算 $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

係数計算機 ships an update every 2 months, 割引計算・消費税計算 every 4 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | 係数計算機 | 割引計算・消費税計算 |
| --- | --- | --- |
| Price | **$1.99** | $2.99 |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | — | Paid |
| Size | 4 MB | 13 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [yoot](https://appshunter.io/developer/425128542) | [NISHI TAKASHI](https://appshunter.io/developer/837194947) |

## What reviewers say

### 係数計算機

[App page](https://appshunter.io/ios/app/id516192503)

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

**In-app purchases:** none


### 割引計算・消費税計算

[App page](https://appshunter.io/ios/app/pro/id1315287014)

Easily calculate discounts and consumption tax with support for reduced tax rates. Save calculations with names and quantities, and access quick calculations via a widget. This ad-free version offers enhanced features for shoppers.

**Highlights:** Reduced tax rate support, Discount calculations (e.g., 20% off), Consumption tax calculation (8% and 10%), Save calculation results with names and quantities, Notification center widget for quick calculations, Ad-free experience

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

**In-app purchases:** none


## Frequently asked questions

### Is 係数計算機 free?

係数計算機 costs $1.99, with no in-app purchases.

### Is 割引計算・消費税計算 free?

割引計算・消費税計算 costs $2.99, with no in-app purchases.

### Do 係数計算機 or 割引計算・消費税計算 have ads?

Neither 係数計算機 nor 割引計算・消費税計算 shows ads.

### Which is updated more often, 係数計算機 or 割引計算・消費税計算?

係数計算機 ships an update every 2 months, and 割引計算・消費税計算 every 4 months. Most recently, 係数計算機 was updated on October 7, 2026 and 割引計算・消費税計算 on October 7, 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.*