Comparison

Zero by Otto vs *slash

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

*slash

Features
Read full description

Slash is a minimal to-do list designed for your Dumb iPhone. Focus on what matters today without noise, streaks, or unnecessary features. Key Features • Quick tasks: add, check off, done • Home and Lock Screen widgets for instant access • Looping tasks for simple habit tracking • Built-in Pomodoro timer for deep focus • Gentle nudges you control with custom frequency and duration • Light and dark themes with adjustable text size • Works offline. No accounts. No tracking. • Daily reset keeps your list clean and intentional Open. Write. Close. Stay focused, on purpose.

Screenshots

Zero by Otto4 screens
*slash4 screens

Verdict

The call

The clearest difference is update cadence: Zero by Otto at every 5 days against *slash's fortnightly. 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, *slash fortnightly. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
Zero by Otto versus *slash: the parameters behind the verdict, then further details
ParameterZero by Otto*slash
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size13 MB1 MB
Age rating4+4+
DeveloperLudus-Language, Inc.param kalaria

In-app purchases

None

Zero by Otto

No in-app purchases

None

*slash

No in-app purchases

Questions

Is Zero by Otto free?
Zero by Otto is free to download, with no in-app purchases.
Is *slash free?
*slash is free to download, with no in-app purchases.
Do Zero by Otto or *slash have ads?
Neither Zero by Otto nor *slash shows ads.
Which is updated more often, Zero by Otto or *slash?
Zero by Otto ships an update every 5 days, and *slash fortnightly. Most recently, Zero by Otto was updated on October 6, 2026 and *slash on October 4, 2026.

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