# Mental Arithmetic Helper vs Gold Tester & Identifier

The clearest difference is in-app purchases: Mental Arithmetic Helper at none against Gold Tester & Identifier's 3. Gold Tester & Identifier's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Gold Tester & Identifier sells 3 in-app purchases, starting at $4.99 per 7 days. Mental Arithmetic Helper asks for nothing beyond the download.

Mental Arithmetic Helper ships an update fortnightly, Gold Tester & Identifier every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Mental Arithmetic Helper | Gold Tester & Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (19 ratings)](https://appshunter.io/ios/app/gold-tester-and-identifier/id6760996655/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | — | Subscription |
| Size | 37 MB | 65 MB |
| Requires iOS | **15.8.3** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [VAN CHIEN NGUYEN](https://appshunter.io/developer/1831720985) |

## What reviewers say

### Mental Arithmetic Helper

[App page](https://appshunter.io/ios/app/mental-arithmetic-helper/id6502036493)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gold Tester & Identifier

[App page](https://appshunter.io/ios/app/gold-tester-and-identifier/id6760996655)

Instantly identify gold authenticity and purity using advanced image recognition. Scan jewelry, coins, and bars to get detailed analysis and build a personal collection. Track your gold assets with a comprehensive scan history.

**Highlights:** Smart gold scanning and identification, Estimated gold purity (karat), Real vs. fake gold identification, Personal gold collection management, Scan history tracking, Detailed gold information

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Tester Weekly Pro | $4.99 | per 7 days |
| Gold ID Premium - Annual Offer | $19.99 | per year |
| Gold Tester Yearly Pro | $34.99 | per year |


## Frequently asked questions

### Is Mental Arithmetic Helper free?

Mental Arithmetic Helper is free to download, with no in-app purchases.

### Is Gold Tester & Identifier free?

Gold Tester & Identifier is free to download, with in-app purchases available.

### Do Mental Arithmetic Helper or Gold Tester & Identifier have ads?

Mental Arithmetic Helper shows ads; Gold Tester & Identifier does not.

### Which is updated more often, Mental Arithmetic Helper or Gold Tester & Identifier?

Mental Arithmetic Helper ships an update fortnightly, and Gold Tester & Identifier every 3 weeks. Most recently, Mental Arithmetic Helper was updated on October 30, 2026 and Gold Tester & Identifier on October 31, 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.*