# Zero In: Number Puzzle — Six numbers. One target. > Number puzzle game with timed challenges and arithmetic operations. (iPhone/iPad app by blackpepper ltd.) - Source: https://appshunter.io/ios/app/zero-in-number-puzzle/id312445279 (this page in markdown: same URL + `.md`) - Developer: [blackpepper ltd](https://appshunter.io/developer/6778240211) - Category: Games, Education, Family, Puzzle - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 5 MB - Languages: American English - Released: 2009-05-16 - Data updated: 2026-09-29 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/zero-in-number-puzzle/id312445279/reviews.md ## What is Zero In? Zero In is a race against the clock. Every level gives you six numbers and a target. Drag two numbers into a row, pick an operation, and use the result to build toward the target. Hit it exactly for the full bonus, or land close for a smaller one. The ring around the target is your timer, and it does not wait. TRY IT, THEN OWN IT The first ten levels are free to play for as long as you like. One purchase unlocks the rest of the campaign for good. No subscription, no advertising, nothing else to buy. THREE TIERS, ONE LONG RUN Ten Easy levels teach the rhythm. Finish them to unlock Medium, then Genius, where the timer is shorter and the near range is tighter. Your score carries across the whole run. EVERY PUZZLE IS SOLVABLE Each one is generated with a verified solution. Stuck? Ask for a hint, or reveal the solution afterwards and see the idea behind it. COMPETE QUIETLY Set a display name and your best run appears on the global leaderboard. No account and no sign-up. FEATURES • Hand-tuned puzzles with guaranteed solutions • Timer ring, exact and near-target scoring, time bonuses • Step-by-step hints and post-game solution replay • Easy, Medium and Genius tiers with progression • Global leaderboard with a display name of your choice • Save & Exit in the first seconds of a level to continue later • Haptics, sound effects and three music tracks, all optional ## Key features - Combine six numbers to reach a target - Timed gameplay with scoring bonuses - Multiple difficulty tiers - Guaranteed solvable puzzles - Step-by-step hints and solution replay - Global leaderboard ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Full Game | $1.99 | one-time | ## Is Zero In safe? Not enough ratings yet to assess Zero In. ## Is Zero In legit? Zero In: Number Puzzle appears to be a legitimate app. The AppsHunter Legitimacy Score for Zero In is 83 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/zero-in-number-puzzle/id312445279/reviews.md ### 5/5 — Liked this game *2014-07-17* One of the best puzzle games. Difficult puzzles but easy game play. Cool! ### 5/5 — Brilliant *2009-05-26* The best math game I have seen on iPhone. ### 5/5 — Outstanding! *2009-05-21* Really great! Entertaining and educational. Simple yet very challenging. Highly recommended! ### 5/5 — Fun game *2009-05-21* Fun and addictive game. Definitely challenging at the genius level. If you like puzzle games you will find this game enjoyable. ### 5/5 — Great App *2009-05-21* Well worth $0.99 ### 5/5 — Best puzzle game in the App Store! *2009-05-17* Works well, great game for anyone who likes math. Great interface, great piano music when the solution is revealed. Overall my favorite game in the App Store! ## Frequently asked questions about Zero In ### How do you play Zero In? You are given six numbers and a target number. Combine the numbers using arithmetic operations to reach the target. The game is timed, and you earn bonuses for hitting the target exactly or landing close. ### Is Zero In free to play? The first ten levels of Zero In are free to play. A one-time purchase unlocks the rest of the campaign, offering a complete experience without subscriptions or ads. ### What are the difficulty levels in Zero In? Zero In features three tiers: Easy, Medium, and Genius. Each tier increases the challenge with shorter timers and tighter scoring ranges. ### Can I get help if I'm stuck in Zero In? Yes, Zero In offers step-by-step hints to guide you through puzzles. You can also reveal the solution after completing a level to understand the strategy. ### Does Zero In have a leaderboard? Yes, Zero In features a global leaderboard where you can compete with other players by setting a display name. No account or sign-up is required to participate. ### What devices does Zero In support? Based on the available data, Zero In is supported on iPhone devices. ### How often is Zero In updated? The latest version of Zero In is 2.0, and it was last updated on September 28, 2026. This indicates a recent update, suggesting ongoing support and development. ### What is the age rating for Zero In? Zero In has an age rating of 4+, making it suitable for a wide range of players. ## Version history (last 4 releases) ### 2.0 — 2026-09-28 Genius is now Zero In. A complete redesign: a timer ring around the target, a live puzzle on the home screen, an operator picker, hints, solution replay, three campaign tiers, a global leaderboard, and new music and sound. ### 1.2 — 2014-07-14 Updated for iOS 6 and 7 ### 1.1 — 2009-07-20 - Game algorithms are enhanced - "Save & continue later" is now possible - Games interrupted by calls are saved automatically, so that you can resume ### 1.0 — 2009-05-16 No release notes. ## More apps by blackpepper ltd - [Mellow: AI Music Studio](https://appshunter.io/ios/app/mellow-ai-music-studio/id6778240209) All apps by blackpepper ltd: https://appshunter.io/developer/6778240211 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*