Alibi: English Grammar Game
Practice tenses by speaking
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
You've been placed at the scene of an absurd crime — a dragon in the kitchen, a time-traveling janitor — and the Temporal Witness Bureau wants your testimony. Speak or type your alibi in the tense they demand. They'll grade every statement, deliver a verdict, and draw you a comic of exactly what happened.
Alibi turns English grammar into a daily detective story. Every day, a new Case File lands on your desk - absurd fictional crimes, impossible suspects, and one very unimpressed cat detective named Milo. Your job: give your testimony in the exact tense the Bureau demands. Voice it or type it. Then wait for the verdict.
This is not a flashcard app. There are no green checkmarks after every sentence. No streaks broken by a single typo. You give all your statements, the Temporal Witness Bureau evaluates everything at once, and you get a verdict: ALIBI HOLDS, ALIBI QUESTIONED, or ALIBI BROKEN.
Then you see exactly why.
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SPEAK YOUR TESTIMONY
Voice-first input means you practice the way language actually works - out loud, under (fictional) pressure, without stopping to tap multiple-choice bubbles.
THE BUREAU DECIDES ALL AT ONCE
No inline corrections. No interruptions. Say all your statements, then get a full AI-powered report with grammar diffs showing exactly what you said vs. what the Bureau expected.
A NEW CASE EVERY DAY
68+ Case Files in the archive. Each one targets a specific tense - present perfect, past continuous, future conditional, and 9 others. Rotating daily so the Bureau never runs out of questions.
YOUR VERDICT IN 4 PANELS
Every interrogation ends with a shareable 4-panel comic strip. ALIBI HOLDS? Milo sighs and lets you go. ALIBI BROKEN? The comic tells that story too.
THE 12-TENSE ATLAS
Every English tense, mapped. Formula, usage, and example sentences - organized the way grammarians wish textbooks were. Reference it before your next testimony.
KEEP YOUR RECORD CLEAN
Daily streaks. Tense-by-tense progress. The Bureau keeps records of everything. So does Milo.
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WHO THIS IS FOR
You've studied English before. Maybe for years. But something about tenses still trips you up - you second-guess yourself mid-sentence, you know the rule but freeze when it's time to use it. Alibi fixes that by making you actually use the tense, in context, under the mild bureaucratic pressure of a fictional detective agency.
A2 to C1. Beginners will be gently corrected. Advanced learners will find edge cases that would embarrass a textbook.
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WHAT MILO THINKS
Milo is the Temporal Witness Bureau's chief investigator. He is a black cat in a suit. He has seen everything. He is not easily impressed. He will review your testimony with the energy of someone who had already made up his mind before you walked in. He is, however, fair.
If your grammar is clean, he'll let you go. He won't smile about it. But he'll let you go.
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Download Alibi. Report for interrogation. Clear your name.
The Bureau is waiting.
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Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.bedefiant.app/Alibi_Privacy_Policy.pdf
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The Bureau has expanded. Your caseload just got bigger:
• DAILY LINEUP — three suspects, two honest alibis, one liar. Spot the temporal impossibility in 30 seconds.
• CROSS-EXAMINATION — flubbed a statement? Milo has follow-up questions. Clarify your testimony and clear your name.
• TENSE DOJO — quick daily drills on your shakiest tense. Two minutes, six exercises, no mercy (okay, some mercy).
• NEW EVIDENCE — the Bureau reopens your old flawed statements right when you're about to forget them. Amend the record for good.
• DETECTIVE RATING — earn Rating Points for everything above and climb from Recruit to Temporal Marshal.
Also: verdicts now arrive noticeably faster, and the Bureau's grammar examiner got a brain upgrade.
Report for interrogation, witness.
The developer, Alona Sharai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alona Sharai
- Size
- 40.2 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Contains
User-Generated Content
- In-App Purchases
Yes
- Alibi Pro Monthly $9.99
- Annual $39.99
- Weekly $4.99
- Copyright
- © BeDefiant 2026
