Comparison

Chess vs Tempest Game Clock

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

Head to head
About

Chess

Manage and study chess databases and games in PGN format with advanced analysis tools. Supports game creation, modification, and import from various sources. Includes engine analysis, opening book management, and puzzle training.

Highlights
  • PGN database and game management
  • Create, modify, and import games
  • Advanced engine analysis with Stockfish
  • Opening book and ChessBase support
  • Chess 960 (Fischer Random) support
  • Diagram recognition for PGN conversion
  • Puzzle training and online play
Features
Read full description

Chess Studio is the first and only application for iPhone and iPad able to manage chess databases and games in PGN format in a complete and efficient way. Chess Studio is an application designed and built for those players who really want to deepen their knowledge in the field of chess, studying chess regularly and participate in tournaments. Chess Studio allows you to: • Read database and games in PGN format (also with extended notation of moves). • Create, delete and modify folders and databases. • View games with annotations and textual comments and keep track of the displayed games. • Use a double chessboard on the same screen for better game analysis. • Visualize moves and variants in compact mode or indented mode. • Modify existing games with move annotation and textual comments. • Insert new games and positions. • Insert, replay and analyze games in Chess 960 mode. • Insert moves with annotations and textual comments. • Insert variation, subvariations etc. • Insert and visualize graphical annotation (colored arrows and highlighted squares). • Share Databases and Games through Airdrop. • Download chess database from internet. • Download chess database directly from PGN Mentor site. • Import games, database and Opening Books from other applications. • Merge two or more databases. • Copy/Paste games and positions. • Analyze games with Stockfish 19 Engine with the support of the Neural Networks (up to 5 lines of analysis simultaneously) with the support of the Engine Evaluation Bar. • Replay games automatically. • Visualize Pawn structure. • Manage Variations and sub-variatons: delete and promote variations. • Read the weekly Magazine The New In Chess (TWIC) and download the games. • Uploading and Downloading PGN Database to/from Dropbox, Google Drive, OneDrive. • Three different modes for moving pieces. • Analyze endgames with Endgame Tablebases. • Analyze and study Chess Openings in the Chess Openings Section. • Create and manage Opening Books in Polyglot format. • Import and manage ChessBase Opening Books (ctg format). • Automatically classify a database according to ECO code. • Replay, enter and analyze Chess 960 games (Fischer Random Chess). • Play against the engine both in standard mode and in Chess 960 mode. • Play online through the LiChess platform • Train by solving Puzzles • ChessBase Database support. • Diagram Recognition: this feature allows the user to take and/or upload photos of chess diagrams and convert them into PGN format positions. Other features and technical details: • Modify the board size. • Professional chess fonts and figurines for moves notation and annotation. • Preview of the game in the board tapping the Info button. • Quick search feature. • Advanced search feature. • Complete management of Null Moves with Tutorial. • Visualization of ECO code and Opening during game replay or game insertion. • Visualization of Book Openings during game replay or game insertion. • Portrait/Landscape mode for all devices. • Support of Slide Over and Split View mode. • Function to move up within variants and subvariants. • iOS 26 compatible and optimized for all the devices. • Sharing of databases across devices via iCloud Drive (also with Chess Studio for Mac OS). • Sound option. • Support for iPad Pro Keyboard or bluetooth keyboard. • VoiceOver/Accessibility support. • Direct contact via email with the developer to report problems, ask for explanation and suggestions (very quick answer!). • Languages: English, Italian, Spanish and German. Complete description at: https://chessstudio.wordpress.com/chess-studio/ To view the privacy policy and Terms of Use (EULA) visit https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ The application is continuously updated with new features and improvements. No registration! No advertising! No sharing of personal data!

About

Tempest Game Clock

This companion app transforms your iPhone into a high-definition display for a physical, tournament-style game clock. It pairs with the clock to provide clear analog and digital timing for various board games, including a strict tournament mode.

Highlights
  • iPhone display integration
  • Analog and digital game timing
  • Supports increments and delays
  • Tournament mode
  • Compatible with Chess, Backgammon, Go, Scrabble, etc.
  • Pairs with physical game clock
Read full description

This is a COMPANION APP to the Tempest Game Clock (available at tempestclock.com) A unique, tournament-style, heavy-weighted game clock that uses your own iPhone as its high definition, full color display. This app is intended only for owners of the Tempest Game Clock: a deluxe traditional form factor chess clock (using a patented precision rocker to control play during the game, not the touch screen). It pairs with this app to deliver clear analog and digital game timing with or without increments, delays, sudden death or OT time controls. Perfect for Chess, Backgammon, Go, Scrabble, Othello/Reversi, Checkers/Draughts, and other board games. Tempest features a strict TOURNAMENT MODE - which disables all phone / text functionality during rated games per FIDE and USCF guidelines. To see the clock in action and to order yours, please visit tempestclock.com.

Screenshots

Chess4 screens
Tempest Game Clock4 screens

Verdict

The call

The clearest difference is price: Tempest Game Clock at Free against Chess's $3.99. Tempest Game Clock also leads on in-app purchases (none vs 2) and review sentiment (100% vs 92%). Chess's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (118 vs 7). On rating, ads and device support 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

Tempest Game Clock is free to download; Chess costs $3.99 up front. Chess sells 2 in-app purchases, starting at $0.99 per month. Tempest Game Clock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tempest Game Clock holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Chess has 118 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 92% of Chess's written reviews are positive against 100% of Tempest Game Clock's.

UpkeepUpdate frequency

Chess ships an update fortnightly, Tempest Game Clock every 2 months. The most recent releases landed on October 14, 2026 and September 25, 2026 respectively.

Scorecard7 real differences · 3 level
Chess versus Tempest Game Clock: the parameters behind the verdict, then further details
ParameterChessTempest Game Clock
Price$3.99Free — better
Rating4.7 (118 ratings)4.9 (7 ratings) — better
Positive reviews92.0% of reviews100.0% of reviews — better
Number of ratings118 — better7
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size237 MB39 MB
Age rating4+4+
DeveloperGiordano VicoliTEMPO-GAMES LLC

Customer experience

Chess

All ratings118 ratings
Positive92.4%
Neutral2.5%
Negative5.1%
Written reviews174 reviews
Positive92.0%
Neutral2.9%
Negative5.2%

Tempest Game Clock

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Chess

Reported bugs

12 issues
  • Problem saving updated game data
  • Engine stopped working after 30 seconds
  • App crashes when adding annotations without hitting 'edit mode' first
  • Crash opening .pgn in landscape mode
  • Crashes when selecting a cell with 0 games associated
Show 7 more
  • App freezes sometimes
  • Download stuck on 'downloading'
  • Dropbox issues on earlier iOS versions
  • Program not bulletproof upon saving work
  • Can't download cbv files
  • Graphical annotations drawing unwanted arrows
  • App doesn't work after iOS update

Requested features

20 requests
  • Add dark mode
  • Add board flip button
  • Improve interface for screen reader users
  • Add private game feature with code
  • Add computer whole game analysis with annotations
Show 15 more
  • Add coloring moves based on annotation
  • Add drawing arrows that are saved
  • Add bookmark feature
  • Add buttons/swipe to go forward/backwards to next/previous game
  • Add select all function for copying games
  • Add autoplay games
  • Remember last position/game opened in a database
  • Support Millennium boards
  • Support UCI engine compatibility
  • Optimize database game view
  • Make edit mode arrows slimmer and add more colors
  • Allow direct iCloud access to databases without export
  • Make graphical annotations optional/disableable
  • Improve font size adjustment for moves and annotations
  • Add search with multiple criteria

Tempest Game Clock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Chess

Subscriptions2
  • Monthly Premium Subscription3 Days trial$0.991 Month
  • Yearly Premium Subscription3 Days trial$8.991 Year
None

Tempest Game Clock

No in-app purchases

Questions

Is Chess free?
Chess costs $3.99, and also offers in-app purchases.
Is Tempest Game Clock free?
Tempest Game Clock is free to download, with no in-app purchases.
Which has better reviews, Chess or Tempest Game Clock?
Tempest Game Clock is rated higher. Chess averages 4.7 out of 5 from 118 ratings, while Tempest Game Clock averages 4.9 from 7 ratings.
Do Chess or Tempest Game Clock have ads?
Neither Chess nor Tempest Game Clock shows ads.
Which is updated more often, Chess or Tempest Game Clock?
Chess ships an update fortnightly, and Tempest Game Clock every 2 months. Most recently, Chess was updated on October 14, 2026 and Tempest Game Clock on September 25, 2026.

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