Zero by Otto vs FileAI Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero by Otto
This task management app offers a minimalist approach to productivity. Unfinished tasks automatically roll over to the next day, ensuring nothing gets lost. Organize tasks into projects, create reusable lists, and collaborate with others.
- Automatic task rollover
- Today view
- Drag and drop rescheduling
- Project organization
- Shared projects for collaboration
- Reusable checklists
- Desktop widget
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Zero - task management made simple. Zero takes a minimalist approach to getting things done. Tasks automatically roll over to the next day when incomplete, so nothing gets lost while keeping your focus on today. Key Features: Automatic Rollover – Unfinished tasks move to tomorrow, no manual rescheduling needed Today View – See what needs to be done today in one clean view Drag & Drop – Reschedule tasks between days with simple gestures Projects – Organize related tasks together Shared Projects – Collaborate with others by inviting them via email Lists – Create reusable checklists for routines and recurring workflows Favorites – Star important tasks to highlight them Desktop Widget (macOS) – Keep today's tasks visible on your desktop Minimal Design – Clean interface without unnecessary features Sync – Works seamlessly across iPhone, iPad, and Mac Dark Mode – Comfortable viewing any time of day Zero helps you stay organized without the complexity of traditional task managers. Tasks flow naturally from day to day, projects keep work organized, and lists handle your recurring needs.
FileAI Diary
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FileAI Diary combines a private diary, secure file storage, and on-device AI — all in one app. Your data stays on your device, never uploaded to the cloud. PRIVATE DIARY - Write daily entries with mood & weather tracking - Add tags and to-do lists to each entry - Browse entries with a calendar view - AI-powered diary review: content feedback, emotional analysis, self-improvement suggestions, and ratings — all on-device ON-DEVICE AI DOCUMENT TOOLS - 9 AI tools: Structure, Vocabulary, Quiz, Flashcard, Q&A, Timeline, Concept Summary, Bullet Summary, and Analysis Report - Works entirely offline using on-device AI models - Supports PDF, DOCX, and TXT files - Save AI reports as JSON for later review SECURE WIFI FILE SERVER - Turn your phone into a local file server - Transfer files to/from your computer via any web browser - Drag & drop uploads, ZIP downloads - Two-pane file manager for organizing between folders - No cables, no cloud, no file size limits PRIVACY & SECURITY - Gesture pattern lock for app access - Hidden folders for sensitive files - Password-protected web access with session tokens - All data stays in private app storage TEXT-TO-SPEECH READER - Listen to documents hands-free - Sentence-by-sentence playback with word highlighting - Adjustable speed and voice selection SHARE EXTENSION - Receive files from other apps directly into your vault - Use AI tools on shared documents instantly CUSTOMIZABLE - Light & dark mode with 20 accent colors - Multi-language interface - Works on phones and tablets - No ads, no subscriptions, no tracking
Screenshots
Verdict
The clearest difference is update cadence: Zero by Otto at every 5 days against FileAI Diary's every 6 weeks. FileAI Diary's advantage is iOS requirement (13.0 vs 16.0). 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. Neither carries in-app purchases, so what you see is what you pay.
Zero by Otto ships an update every 5 days, FileAI Diary every 6 weeks. The most recent releases landed on June 3, 2026 and September 18, 2026 respectively.
| Parameter | Zero by Otto | FileAI Diary |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Ludus-Language, Inc. | Ming Hei Tsui |
In-app purchases
Zero by Otto
No in-app purchases
FileAI Diary
No in-app purchases









