# Coin Tester. vs BigKeys Large Key Keyboard

The clearest difference is price: Coin Tester. at Free against BigKeys Large Key Keyboard's $5.99. Coin Tester. also leads on rating (4.4 vs 2.0) and ratings volume (123 vs 1). BigKeys Large Key Keyboard's advantage is in-app purchases (none vs 3) and update cadence (daily vs monthly). On ads there is nothing between them.

Coin Tester. is free to download; BigKeys Large Key Keyboard costs $5.99 up front. Coin Tester. sells 3 in-app purchases, starting at $9.00 per month. BigKeys Large Key Keyboard asks for nothing beyond the download.

Coin Tester. holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: Coin Tester. has 123 ratings behind it against 1, so its average is the more settled of the two.

Coin Tester. ships an update monthly, BigKeys Large Key Keyboard daily. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Coin Tester. | BigKeys Large Key Keyboard |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.4 (123 ratings)](https://appshunter.io/ios/app/coin-tester/id6448944215/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/bigkeys-large-key-keyboard/id6802582321/reviews) |
| Number of ratings | **123** | 1 |
| Positive reviews | 64.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | Subscription | **Paid** |
| Size | 95 MB | 7 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Growth & Value](https://appshunter.io/developer/1687037796) | [Tzahi Bergman](https://appshunter.io/developer/6802582503) |

## What reviewers say

### Coin Tester.

[App page](https://appshunter.io/ios/app/coin-tester/id6448944215)

This app helps you verify the authenticity of one-ounce gold and silver coins using acoustic resonance and artificial intelligence. It analyzes the unique sound a coin makes when struck to detect counterfeits. Regular updates ensure accuracy for various coin types and conditions.

**Highlights:** Acoustic resonance coin testing, Artificial intelligence analysis, Detects counterfeit coins, Supports gold and silver bullion coins, Database of coin vintages, Regular updates for accuracy

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.00 | per month |
| Annual Access | $72.00 | per year |
| 7-Day Access | $19.00 | one-time |

**What reviewers like**

- 👍 Intuitive and easy to use
- ✅ Accurate coin authenticity verification
- 🚀 Fast and efficient operation
- 💡 Constantly developing and updating
- ✨ Useful for checking grandfather's collection

**What reviewers complain about**

- 💰 App requires payment for features
- ❓ No mention of paid access upfront
- 💳 Monthly subscription for ping test
- 📉 Limited database of coins
- ❌ Not accurate for all coin types

**Reported bugs**

- Test results are not accurate
- App fails to identify genuine coins
- App gives positive test for non-coin objects

**Requested features**

- Expand coin database
- Improve accuracy of tests
- Clarify pricing and subscription model upfront


### BigKeys Large Key Keyboard

[App page](https://appshunter.io/ios/app/bigkeys-large-key-keyboard/id6802582321)

This keyboard app features significantly larger keys and letters, designed to improve visibility for users with low vision. It employs a "hold and slide" typing method to prevent accidental presses and ensure accurate character selection.

**Highlights:** Larger keys, Larger letters, Hold and slide typing, Improved visibility, Customizable layout

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Coin Tester. free?

Coin Tester. is free to download, with in-app purchases available.

### Is BigKeys Large Key Keyboard free?

BigKeys Large Key Keyboard costs $5.99, with no in-app purchases.

### Which has better reviews, Coin Tester. or BigKeys Large Key Keyboard?

Coin Tester. is rated higher. Coin Tester. averages 4.4 out of 5 from 123 ratings, while BigKeys Large Key Keyboard averages 2.0 from 1 ratings.

### Do Coin Tester. or BigKeys Large Key Keyboard have ads?

Neither Coin Tester. nor BigKeys Large Key Keyboard shows ads.

### Which is updated more often, Coin Tester. or BigKeys Large Key Keyboard?

Coin Tester. ships an update monthly, and BigKeys Large Key Keyboard daily. Most recently, Coin Tester. was updated on October 21, 2026 and BigKeys Large Key Keyboard on October 28, 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.*