# TRIGOMETRIC vs Unique Auctions

TRIGOMETRIC and Unique Auctions are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

TRIGOMETRIC ships an update every 25 months, Unique Auctions every 24 months. The most recent releases landed on August 27, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | TRIGOMETRIC | Unique Auctions |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unique-auctions/id1535153692/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 24 months** |
| Monetization | — | Free |
| Size | 135 MB | 135 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 9+ |
| Developer | [TRIGOMETRIC SDN BHD](https://appshunter.io/developer/1533217166) | [Unique World Coin Sdn. Bhd](https://appshunter.io/developer/1535153694) |

## What reviewers say

### TRIGOMETRIC

[App page](https://appshunter.io/ios/app/trigometric/id1533217164)

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

**In-app purchases:** none


### Unique Auctions

[App page](https://appshunter.io/ios/app/unique-auctions/id1535153692)

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.

**Highlights:** Professional numismatic evaluation, Exhibitions and auctions, Global collector network, Numismatic society memberships, Numismatic company subsidiary

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is TRIGOMETRIC free?

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

### Is Unique Auctions free?

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

### Do TRIGOMETRIC or Unique Auctions have ads?

Neither TRIGOMETRIC nor Unique Auctions shows ads.

### Which is updated more often, TRIGOMETRIC or Unique Auctions?

TRIGOMETRIC ships an update every 25 months, and Unique Auctions every 24 months. Most recently, TRIGOMETRIC was updated on August 27, 2026 and Unique Auctions on July 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.*