# Smart Convert vs 進数・補数変換

The clearest difference is in-app purchases: 進数・補数変換 at none against Smart Convert's 1. 進数・補数変換 also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Smart Convert sells 1 one-off in-app purchase. 進数・補数変換 asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Smart Convert | 進数・補数変換 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/smart-convert-base-converter/id6450381653/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 3 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Koya Nambo](https://appshunter.io/developer/1633778504) | [Manato Abe](https://appshunter.io/developer/1766487879) |

## What reviewers say

### Smart Convert

[App page](https://appshunter.io/ios/app/smart-convert-base-converter/id6450381653)

Easily switch numbers between various bases, from binary to base 62. Ideal for developers, students, and math enthusiasts needing quick and reliable conversions with fractional parts. Features include instant common base conversions, custom base support, and conversion history.

**Highlights:** Convert between bases 2 to 62, Quick mode for common bases, Custom mode for any base pair, Save and recall conversion history, Support for fractional numbers, Light and dark themes, Localized in 9 languages

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


### 進数・補数変換

[App page](https://appshunter.io/ios/app/id6702007723)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Convert free?

Smart Convert is free to download, with in-app purchases available.

### Is 進数・補数変換 free?

進数・補数変換 is free to download, with no in-app purchases.

### Do Smart Convert or 進数・補数変換 have ads?

Smart Convert shows ads; 進数・補数変換 does not.

### Which is updated more often, Smart Convert or 進数・補数変換?

Smart Convert ships an update weekly, and 進数・補数変換 weekly. Most recently, Smart Convert was updated on November 3, 2026 and 進数・補数変換 on October 27, 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.*