# TaiseiAuction vs Sikkaji

The clearest difference is update cadence: Sikkaji at monthly against TaiseiAuction's every 8 months. On price, ads, in-app purchases and monetization model there is nothing between them.

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

TaiseiAuction ships an update every 8 months, Sikkaji monthly. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | TaiseiAuction | Sikkaji |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/taiseiauction/id1460425362/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free | Free |
| Size | 134 MB | 43 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Taisei Auction Corporation](https://appshunter.io/developer/1460425361) | [Utsav Selarka](https://appshunter.io/developer/1750445805) |

## What reviewers say

### TaiseiAuction

[App page](https://appshunter.io/ios/app/taiseiauction/id1460425362)

Discover and bid on numismatic items from around the globe. This platform offers a wide selection of gold and silver rarities, as well as banknotes, through annual and online auctions. It's a trusted source for collectors to find or sell valuable coins.

**Highlights:** Global numismatic item auctions, Gold and silver rarities, Banknote auctions, Annual Tokyo International Coin Convention auctions, Online auctions, Trusted coin dealer services

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Sikkaji

[App page](https://appshunter.io/ios/app/sikkaji/id6503937442)

A marketplace for buying and selling vintage coins and notes. Explore collections by category or search by name, with secure checkout for easy transactions. Guest login is available to browse listings.

**Highlights:** Buy and sell vintage coins/notes, Guest login for browsing, Explore by category, Search by name, Seller profile pages, Secure checkout

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TaiseiAuction free?

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

### Is Sikkaji free?

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

### Do TaiseiAuction or Sikkaji have ads?

Neither TaiseiAuction nor Sikkaji shows ads.

### Which is updated more often, TaiseiAuction or Sikkaji?

TaiseiAuction ships an update every 8 months, and Sikkaji monthly. Most recently, TaiseiAuction was updated on October 6, 2026 and Sikkaji on October 16, 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.*