Chess Clock vs 将棋Arena
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Chess Clock
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The last game clock you'll ever download. Chess Clock is a dedicated clock for chess, go, shogi and board games. Giant digits you can read from across the table. Every time control that actually exists. No ads, no account, and it works fully offline. NEW IN 2.0 • Instant touch: the clock switches the moment your finger lands. Slap it like a real clock. A slap with several fingers counts as one move, never two. • Visible delay: in simple delay a "delay 4" badge and a shrinking bar show why your main time is not running yet. • Keep playing after a flag (US Chess rules): your opponent has to claim the win. If both flags fall, it is a draw, and the game summary records who fell first. • Sunlight theme: black on white, the side to move inverted, bold digits and full screen brightness for outdoor games and bright halls. TAP ANYWHERE Your whole side of the screen is the button. No hunting for a tiny target while your flag is falling. EVERY TIME CONTROL • Fischer increment: time added after every move • Bronstein delay: get back what you used, up to the increment • Simple delay: your time runs only after the delay expires • Japanese byo-yomi: periods that reset each move • Canadian byo-yomi: a block of time for a set number of stones • Hourglass: your time flows to your opponent • Multi-stage controls: "40 moves in 90 minutes, then 30 minutes" • Sudden death, and any combination of the above 25 presets are ready to play: bullet 1+0, blitz 3+2 and 5+3, rapid 10+5, classical 90+30, FIDE 40/90+30, US delay 5|d5, go, Canadian byo-yomi, shogi, hourglass, and turn timers for board, card, word and party games. Build and save your own in seconds. BUILT FOR GO AND SHOGI Japanese and Canadian byo-yomi done properly, with period counts, stone counts and an audible countdown for the last five seconds. Most clocks skip this. We started here. 2 TO 6 PLAYERS Players sit around the table and the turn goes around with them. Reverse direction mid-game, knock out players who run out of time and keep playing, or give everyone a fixed time per turn. Perfect for board game night, not just duels. PER-PLAYER HANDICAP Give each player a different time control. Ideal for coaching, for teaching kids, and for uneven matchups. READ IT ACROSS THE TABLE Full-screen digits, each player's time turned to face them. Six themes: Modern, Retro LCD seven-segment, OLED Black, High Contrast, Wood Club and the new Sunlight. SOUND AND HAPTICS Two distinct tap tones, so you know who is on move without looking. Low-time warning, byo-yomi ticks, and a falling-flag buzzer. Turn it all off for a silent tournament hall. GAME STATISTICS Move counts, average and longest think, a think-time chart for every move, and your last 50 games in history. Share any result as one line of text. ACCESSIBILITY VoiceOver reads each player's time and state, and a double tap passes the move. Dynamic Type, Reduce Motion, and High Contrast and Sunlight themes. HONEST SOFTWARE No ads. No in-app purchases. No account. No tracking. It works fully offline, on a plane, in a park, in a tournament hall with no signal. The only time it goes online is a quick check for a newer version at launch. Available in 49 languages, translated by hand. Made for players who take the game seriously enough to want the clock to disappear.
将棋Arena
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将棋Arena は、ルールに妥協しない本格派の将棋アプリです。ひとりで指すのも、世界中の相手と対戦するのも、詰将棋を解くのも、これ一つで完結します。 ■ 正確なルール 成り、持ち駒、二歩、行き所のない駒、打ち歩詰め、詰み、千日手、連続王手の千日手まで実装しています。反則手はそもそも指せないので、ルールを覚えながら安心して指せます。 ■ CPU 対戦 初級・中級・上級の三段階。初級はこれから覚える方の練習相手に、上級は本気の一局に。先手・後手のどちらも選べます。 ■ オンライン対戦 ランダムマッチですぐに対戦相手が見つかります。対局中に接続が切れても、開き直せば同じ局面から再開できます。 ■ フレンド対戦 8桁のフレンドコードを交換して、友だちと直接対局できます。 ■ 観戦 いま進行中の対局を、リアルタイムで盤ごと眺められます。 ■ 詰将棋 140問 1手詰90問、3手詰50問。やさしい問題から順に並んでいます。ヒントと解答つきで、解けた問題は記録されます。 ■ 対局の解析 指し終えた将棋をエンジンが読み直し、評価値の推移、最善手、疑問手や悪手を指摘します。どこで形勢が動いたのかが一目で分かります。 ■ 棋譜 KIF 形式に沿った表記で棋譜が残ります。局面と指し手は SFEN/USI で扱っているので、他の将棋ソフトとも地続きです。 ■ 見た目を自分好みに 基調色と盤の色を、6つのプリセットまたはカラーピッカーで自由に変えられます。 ■ プロフィール 表示名とアイコンを設定して、対 CPU の戦績を記録できます。Apple ID と連携すれば、機種を変えてもそのまま引き継げます。 将棋は日本で1000年以上受け継がれてきたゲームです。その面白さを、日本の方にも、これから将棋に触れる世界中の方にも届けたい。そう考えて作っています。
Screenshots
Verdict
The clearest difference is ads: Chess Clock at none against 将棋Arena's shown. Chess Clock also leads on iOS requirement (15.0 vs 26.5). 将棋Arena's advantage is update cadence (weekly vs every 3 months). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Chess Clock ships an update every 3 months, 将棋Arena weekly. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.
| Parameter | Chess Clock | 将棋Arena |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 25 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | lapnito.cz s.r.o. | Kei Suzumura |
In-app purchases
Chess Clock
No in-app purchases
将棋Arena
No in-app purchases









