Kronos

Overview

Kronos is a Call of Duty Zombies companion built around Easter Egg guides, interactive maps and puzzle aids. It suits players working through Zombies objectives who want to keep track of their progress on Android, iOS or the web. Its focused toolkit is a strong fit for that use, though players seeking guides for a wider range of games should look elsewhere.

Key features

Walkthroughs break Easter Eggs into steps with screenshots, and players can check off objectives and track progress. That is more practical for a lengthy sequence than a static guide: it helps players keep their place while working through objectives and returning to an unfinished run. Kronos covers more than 40 maps, from Nacht der Untoten to Shattered Veil, giving its guides a broad Zombies-specific reach.

Interactive maps complement the walkthroughs, while the Memorizer tracks Simon Says color and number sequences and offers a one-tap reset. These are focused tools for particular Zombies puzzles, rather than a general guide system for other games. Community voting lets players weigh in on the next CoD Revival and view a countdown and vote results.

Kronos says it works offline and syncs offline, an advantage when a connection is unreliable. To sync progress, bookmarks and guide history across devices, phone sign-in stores a phone number and Firebase user ID. Firebase security rules restrict Firestore access to the authenticated account, and users can delete their account in app settings. The account controls provide a defined boundary, but players who do not want to share a phone number for syncing may prefer to use the app without signing in.

Pricing

Kronos is free: the Free plan costs nothing, requires no signup and works offline. It includes interactive walkthroughs, progress tracking and offline access, making it an easy choice for players who want the core guide tools without paying or creating an account. No paid plan is part of the offering.

Platforms

Kronos is available on Android, iOS and the web. Mobile apps suit players who want the walkthrough and puzzle tools alongside a game session, while web access offers another way to consult guides. Offline use is a practical benefit where an internet connection is not dependable.

Who it's for

Kronos is for Call of Duty Zombies players who need Easter Egg walkthroughs, want to mark objectives as complete, or need help tracking Simon Says sequences. It is less suited to anyone looking for broad coverage across games: its maps and puzzle tools are centered on Zombies.

Pros and cons

• Pro: Step-by-step guides with screenshots and progress checkoffs help players follow multi-stage Easter Eggs and resume where they left off.
• Pro: More than 40 maps, interactive maps and offline access give Zombies players several ways to consult guides.
• Pro: The free plan requires no signup, and the Memorizer has a one-tap reset for sequence tracking.
• Con: Cross-device syncing requires phone sign-in and stores a phone number and Firebase user ID, which may put off players who prefer not to share account details.
• Con: The tools focus on Call of Duty Zombies, so players seeking guides for other games need a broader service.

Alternatives

Video Game Guide Platforms is a useful starting point for comparing guide services. Gamer Guides Interactive Maps is a better fit for players who want guides, maps, databases, bookmarks and discussion, with a free-plan cap of 50 map markers per map; its ad-free plan costs $2.99 a month. RaiderBuddy suits players after a broader set of tools across an extension, web and Windows, with every tool available free without an account and a €2.99 a year Premium Yearly plan.

ClearedMap is worth considering for players who want unlimited checklists, notes and drawings across every map and marker on the web, without an account, on its free plan. GameGuide AI is another free app option on Android and iOS, with in-app purchases available. Pocket Codex is a free iPhone and iPad app requiring iOS 26.0 or later. MapGenie is a freemium option on Android, iOS and the web. MetaForge is a freemium app for Android, iOS and the web, with a Rare Supporter plan at 11.49 PLN a month. Icy Veins is a freemium option on the web, Windows and macOS.

Verdict

Choose Kronos if you play Call of Duty Zombies and want free, offline-capable Easter Egg walkthroughs with progress tracking and specific puzzle tools. Its narrow focus is also its main limitation: players who want guides across a range of games should choose a broader alternative.