# bwCalc（シンプルにデザインされた計算機、税込みも表示） vs PrimeCalc

The clearest difference is update cadence: PrimeCalc at every 5 weeks against bwCalc（シンプルにデザインされた計算機、税込みも表示）'s every 3 months. bwCalc（シンプルにデザインされた計算機、税込みも表示）'s advantage is iOS requirement (10.0 vs 12.0). 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.

bwCalc（シンプルにデザインされた計算機、税込みも表示） ships an update every 3 months, PrimeCalc every 5 weeks. The most recent releases landed on June 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | bwCalc（シンプルにデザインされた計算機、税込みも表示） | PrimeCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/bwcalc/id577013549/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 15 MB | 12 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Yutaka Nakao](https://appshunter.io/developer/1303008060) |

## What reviewers say

### bwCalc（シンプルにデザインされた計算機、税込みも表示）

[App page](https://appshunter.io/ios/app/bwcalc/id577013549)

A calculator app designed with aesthetic themes for iPhones, offering features like tax calculation, history logging, and font customization. It also includes advanced 10-bit, 2-bit, and 16-bit conversion capabilities.

**Highlights:** Themed calculator designs (Black, White, Color, Classic), Copy/paste results with double-tap, Swipe to delete digits, Tax calculation with input copying, Number font customization, Calculation history with swipe-to-delete, Binary, decimal, and hexadecimal conversion

**Features:** macOS Compatibility

**In-app purchases:** none


### PrimeCalc

[App page](https://appshunter.io/ios/app/primecalc-modprime-factor/id1332239791)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is bwCalc（シンプルにデザインされた計算機、税込みも表示） free?

bwCalc（シンプルにデザインされた計算機、税込みも表示） is free to download, with no in-app purchases.

### Is PrimeCalc free?

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

### Do bwCalc（シンプルにデザインされた計算機、税込みも表示） or PrimeCalc have ads?

Both bwCalc（シンプルにデザインされた計算機、税込みも表示） and PrimeCalc show ads.

### Which is updated more often, bwCalc（シンプルにデザインされた計算機、税込みも表示） or PrimeCalc?

bwCalc（シンプルにデザインされた計算機、税込みも表示） ships an update every 3 months, and PrimeCalc every 5 weeks. Most recently, bwCalc（シンプルにデザインされた計算機、税込みも表示） was updated on June 5, 2026 and PrimeCalc on September 28, 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.*