# Chess Clock App vs Plus42

The clearest difference is review sentiment: Plus42 at 92% against Chess Clock App's 0%. Plus42 also leads on rating (4.9 vs 1.0) and update cadence (weekly vs every 11 months). Chess Clock App's advantage is price ($0.99 vs $9.99). On ads, in-app purchases and device support there is nothing between them.

Chess Clock App costs $0.99 and Plus42 $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Plus42 holds the better App Store score, 4.9 against 1.0. That said, the two scores are not equally well evidenced: Plus42 has 79 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Chess Clock App's written reviews are positive against 92% of Plus42's.

Chess Clock App ships an update every 11 months, Plus42 weekly. The most recent releases landed on September 16, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Chess Clock App | Plus42 |
| --- | --- | --- |
| Price | **$0.99** | $9.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/chess-clock-app/id477121710/reviews) | **[4.9 (79 ratings)](https://appshunter.io/ios/app/plus42/id1597963622/reviews)** |
| Number of ratings | 1 | **79** |
| Positive reviews | 0.0% of reviews | **92.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 19 MB | 11 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Thomas Okken](https://appshunter.io/developer/337692632) |

## What reviewers say

### Chess Clock App

[App page](https://appshunter.io/ios/app/chess-clock-app/id477121710)

This application functions as a dual-clock timer for two players, ideal for games like chess. It precisely tracks each player's move time, ensuring fair play and preventing excessive delays. The timer can count down or up, and features a pause function for both players.

**Highlights:** Dual-player time tracking, Count down or count up timer, Pause functionality, Background operation, Individual time settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Plus42

[App page](https://appshunter.io/ios/app/plus42/id1597963622)

This advanced scientific calculator simulates the classic HP-42S RPN calculator with enhanced features. It offers algebraic expressions, unit conversions, directories for storage, a larger resizable display, financial functions, and 2D plotting with integral and root finding.

**Highlights:** HP-42S RPN calculator simulation, Algebraic expressions, Attached units and conversions, Program and variable directories, Resizable 8-row, 22-column display, Time value of money and amortization, 2D function plotting with zoom and pan

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Chess Clock App free?

Chess Clock App costs $0.99, with no in-app purchases.

### Is Plus42 free?

Plus42 costs $9.99, with no in-app purchases.

### Which has better reviews, Chess Clock App or Plus42?

Plus42 is rated higher. Chess Clock App averages 1.0 out of 5 from 1 ratings, while Plus42 averages 4.9 from 79 ratings.

### Do Chess Clock App or Plus42 have ads?

Neither Chess Clock App nor Plus42 shows ads.

### Which is updated more often, Chess Clock App or Plus42?

Chess Clock App ships an update every 11 months, and Plus42 weekly. Most recently, Chess Clock App was updated on September 16, 2026 and Plus42 on September 27, 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.*