GenZD Zero vs Chess Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GenZD Zero
Run classic idTech 1 games and community mods on your iOS device with modern rendering capabilities. Enjoy enhanced graphics, custom controls, and controller support. You must provide your own game files.
- idTech 1 game engine support
- Modern 3D rendering
- Widescreen graphics
- Dynamic lighting
- Customizable touch controls
- Game controller support
- Local multiplayer
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GenZD Zero supports running games using the open-source idTech 1 game engine for iOS, and supports running its "WAD" game files as well as community-developed "MOD" files, all rendered natively using modern technology. It supports several capabilities beyond the original engine, such as modern 3D rendering, widescreen graphics, dynamic lighting, a fully scriptable environment, and much much more. Please note that GenZD Zero does not include content and they must be provided by you. Please use the Files app to move or copy files to the GenZD folder under "On my iPhone" or "On my iPad". Configurations called "Launch Configurations" can be created using a base game file as well as additional MOD files (.pk3 and .zip files). A plethora of content developed by the community is available on the web, and almost all "mods" that use the UDMF or WAD formats are supported. GenZD Zero supports any "WAD"s and "mods", but is limited to 3 launch configurations and supports one touch configuration layout. Upgrading to the full version will unlock unlimited launch configurations and custom touch control layouts. Additional features: - Game controller support: PS4, PS5, Xbox One, Nintendo Switch, mFi - On-screen touch virtual gamepad and virtual keyboard - Customizable touch controls: Rearrange buttons, change color and size. Support for saving multiple layouts. - Gyroscope aiming - Widescreen Metal graphics rendering using MoltenVK - Add your own game and mod files via the Files app - Accessibility: Supports VoiceOver and mods that support accessibility - Local Multiplayer: Host a co-op or deathmatch game, discover hosts running GenZD automatically on the same network and join a game
Chess Clock
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Chess Clock is the beautiful, complete game timer for over-the-board play — for chess, Go, Scrabble, backgammon and any two-player game. Pay once. No ads. No subscription. Tap your side after each move to start your opponent's clock. Big, glanceable digits read from across the table — and a smart mirrored readout lets both players see both clocks the right way up. EVERY TIME CONTROL • Sudden death & Fischer increment • Bronstein and simple / US delay • Multi-stage FIDE tournament controls (e.g. 40 moves in 90 min, then +30 min, +30s a move) • Byo-yomi & Canadian byo-yomi for Go • Hourglass mode • Custom builder — dial in any base time, increment, delay or stages BUILT FOR THE TABLE • Ready presets: Bullet, Blitz, Rapid, Classical • Low-time warning with sound and haptics • Flag detection with an unmistakable alarm • Keeps the screen awake and auto-pauses if you leave the app • Portrait and landscape PLAYERS & STATS • Keep a roster of players • Automatic win / loss records and win rates • Head-to-head history — see who leads your rivalry MAKE IT YOURS • 7 clock faces: Minimal, Carbon, Wood, Tournament LCD, Neon, Blueprint, Paper • Player names on the board • Light & dark themes · English, Deutsch, Español, Français PRIVATE BY DESIGN No account. No tracking. Everything stays on your device. Chess Clock Pro unlocks the custom & FIDE tournament controls, Bronstein & delay, Go byo-yomi, extra clock faces, player names, and full stats & history — a single one-time purchase, yours forever.
Screenshots
Verdict
The clearest difference is iOS requirement: Chess Clock at 13.0 against GenZD Zero's 15.0. On price, ads, 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. GenZD Zero sells 1 one-off in-app purchase and Chess Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | GenZD Zero | Chess Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (42 ratings) — better | — |
| Positive reviews | 67.7% of reviews | — |
| Number of ratings | 42 — better | — |
| Update frequency | Every 2 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 70 MB | 36 MB |
| Age rating | 12+ | 4+ |
| Developer | Infinite Evolution Technologies | Ralf Pitter |
In-app purchases
GenZD Zero
- Full Version Upgrade$2.99
Chess Clock
- Chess Clock Pro$8.99









