Unique Auctions vs Sikkaji
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unique Auctions
This app connects users with a numismatic auction company for professional evaluations, exhibitions, and auctions of coins and banknotes. It facilitates a global network of collectors and business partners.
- Professional numismatic evaluation
- Exhibitions and auctions
- Global collector network
- Numismatic society memberships
- Numismatic company subsidiary
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Unique Auctions is owned by one of the main numismatic auction company in Malaysia, Unique World Coin Sdn.Bhd. It is a subsidiary of Unique Discovery (Group) Sdn Bhd which founded in 2013 that provide professional evaluation service, exhibitions and auction. Our business partners are from Malaysia, Singapore, Brunei, Indonesia, China, Hong Kong, Taiwan. We are also a member of Malaysia Numismatic Collector Society, International Bank Note Society, Hong Kong Numismatic Society, Associacao Numismatica De Macau. Through the years, we have build relationships with collectors and business partners from different countries forming a global network and also gain the reputation for good quality of service.
Sikkaji
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.
- Buy and sell vintage coins/notes
- Guest login for browsing
- Explore by category
- Search by name
- Seller profile pages
- Secure checkout
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Sikkaji app is a marketplace where you can add vintage coins and notes on your collection. The sikkaji app have both buyer and seller functionality so that anyone can buy and seller their authentic coins and notes. To join as a seller in sikkaji app, you must have registered business. You can explore the app using Guest login. Explore by category or search by name. You can also explore seller listing in seller profile page. Quick and Secure checkout let you to easily purchase the vintage coins and notes.
Screenshots
Verdict
The clearest difference is update cadence: Sikkaji at monthly against Unique Auctions's every 24 months. On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Unique Auctions ships an update every 24 months, Sikkaji monthly. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.
| Parameter | Unique Auctions | Sikkaji |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 24 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 135 MB | 43 MB |
| Age rating | 9+ | 4+ |
| Developer | Unique World Coin Sdn. Bhd | Utsav Selarka |
In-app purchases
Unique Auctions
No in-app purchases
Sikkaji
No in-app purchases
Questions
Is Unique Auctions free?
Is Sikkaji free?
Do Unique Auctions or Sikkaji have ads?
Which is updated more often, Unique Auctions or Sikkaji?
Other comparisons
