Comparison

Mattle Clock vs JS.Notebook

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mattle Clock

This utility allows multiple players to use their own devices for game timers, eliminating the need to pass a single phone. It offers two modes: per-move limits for quick games and per-game time allocation for strategic play. Designed for face-to-face board games, it prioritizes flexibility over strict enforcement.

Highlights
  • Multi-device connections
  • Per-Move game mode
  • Per-Game game mode
  • Intuitive interface
  • Flexible timer control
  • Designed for board games
Features
Read full description

Unlike all other available game clock apps, Mattle Clock is the first and only one that supports multi-devices connections. Gone are the days when you need to circulate your phone across the whole table while everyone taking turns to make moves. With Mattle Clock, everyone will be using their own devices and the timers are all connected behind the scene. Your clock will be ticking in your own turn. When you are done moving, press the button to pass it on to the next person. Simple as that! The primary focus of Mattle Clock is simplicity and ease of use. Our interface is extremely intuitive and neat, and there are currently two supported game modes. "Per-Move" mode sets a limit for each individual moves, and remaining time won't carry over. This mode is best for games like Scrabble or Rummikub, in which you can force a pass upon time's up. These games are fun only by enforcing a hard time limit for moves. "Per-Game" mode grants a fixed amount of time for each players for the whole game, and their timers will start ticking only in their own turns. This mode is suitable for games like chess, in which players are given more flexibility to allocate their time. ---------------------------------------- Special Notes and FAQ: ---------------------------------------- 1. This app is intended and designed to be used with multiple devices. Each players are expected to be using their own devices and connect to the centralized timers. 2. To allow greater flexibility, there is no "game over" effects of any kind even when timers count to zero. It's entirely up to you to decide what to do when player ran out of the time - whether considering a defeat or forcing a pass. 3. Similarly, we also intended to allow pausing timers and passing turns for other players, so as to minimize the disruption when anyone is having network issue during the games. All in all, the app is designed to enforce face-to-face board games playing experiences. Because of this, we believe giving flexibility is more important than avoiding cheating.

About

JS.Notebook

Build, test, and run your JavaScript code directly on your iOS device. This utility allows you to execute scripts in widgets and even use your device as a host for computer browser code execution.

Highlights
  • Build JavaScript code
  • Test code at runtime
  • Run code in widgets
  • Use device as code host
  • Code execution in computer browser
Features
Read full description

JS Notebook provides a creative way for you to build and try out your Javascript. - Build, test, and check your code at runtime. - Easily run your code in Widgets - Read code in computer browse, make the iOS device to be a host.

Screenshots

Mattle Clock4 screens
JS.Notebook4 screens

Verdict

The call

The clearest difference is rating: JS.Notebook at 5.0 against Mattle Clock's 4.0. Mattle Clock's advantage is update cadence (every 2 days vs every 50 months) and iOS requirement (8.0 vs 14.0). On price, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

JS.Notebook holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Mattle Clock ships an update every 2 days, JS.Notebook every 50 months. The most recent releases landed on October 5, 2026 and September 17, 2026 respectively.

Scorecard3 real differences · 7 level
Mattle Clock versus JS.Notebook: the parameters behind the verdict, then further details
ParameterMattle ClockJS.Notebook
PriceFreeFree
Rating4.0 (1 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 2 days — betterEvery 50 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better14.0
Further details — not scored
Size12 MB19 MB
Age rating4+4+
DeveloperHiuKim YuenZijie Deng

Customer experience

Mattle Clock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

JS.Notebook

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mattle Clock

No in-app purchases

None

JS.Notebook

No in-app purchases

Questions

Is Mattle Clock free?
Mattle Clock is free to download, with no in-app purchases.
Is JS.Notebook free?
JS.Notebook is free to download, with no in-app purchases.
Which has better reviews, Mattle Clock or JS.Notebook?
JS.Notebook is rated higher. Mattle Clock averages 4.0 out of 5 from 1 ratings, while JS.Notebook averages 5.0 from 1 ratings.
Do Mattle Clock or JS.Notebook have ads?
Neither Mattle Clock nor JS.Notebook shows ads.
Which is updated more often, Mattle Clock or JS.Notebook?
Mattle Clock ships an update every 2 days, and JS.Notebook every 50 months. Most recently, Mattle Clock was updated on October 5, 2026 and JS.Notebook on September 17, 2026.

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