Comparison

Zero by Otto vs FileAI Diary

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Automatic task rollover
  • Today view
  • Drag and drop rescheduling
  • Project organization
  • Shared projects for collaboration
  • Reusable checklists
  • Desktop widget
Read full description

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.

About

FileAI Diary

Features
Read full description

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

Zero by Otto4 screens
FileAI Diary4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Zero by Otto versus FileAI Diary: the parameters behind the verdict, then further details
ParameterZero by OttoFileAI Diary
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size13 MB52 MB
Age rating4+4+
DeveloperLudus-Language, Inc.Ming Hei Tsui

In-app purchases

None

Zero by Otto

No in-app purchases

None

FileAI Diary

No in-app purchases

Questions

Is Zero by Otto free?
Zero by Otto is free to download, with no in-app purchases.
Is FileAI Diary free?
FileAI Diary is free to download, with no in-app purchases.
Do Zero by Otto or FileAI Diary have ads?
Neither Zero by Otto nor FileAI Diary shows ads.
Which is updated more often, Zero by Otto or FileAI Diary?
Zero by Otto ships an update every 5 days, and FileAI Diary every 6 weeks. Most recently, Zero by Otto was updated on June 3, 2026 and FileAI Diary on September 18, 2026.

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