Comparison

Index ∙ Lists & Tasks vs Obius

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

Head to head
About

Index ∙ Lists & Tasks

Features
Read full description

A place for your thoughts, built for simplicity and intentionality. Index allows you to create all the lists you need, so that the crazy idea you got at 4am wont be lost forever. You can save links inside your lists, and it integrates seamlessly with your iPhone, simply use the share button from any app to add something to Index. It also comes with a full task management system, that connects to your lists! Priorities, reminders, recurrence, subtasks, you name it. Don't forget to add the widget to your home screen or a couple of handy buttons to your control center or lock screen ;) Thank you for trying it out, this is my first app here, open to feedback and suggestions (big plans coming up)! Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://index-it.app/privacy

About

Obius

This app offers a visual workspace for organizing notes and ideas. It allows for reusable content blocks, color-coded sections for intent, and AI-powered features for content generation and semantic search. It prioritizes privacy with local-first storage and end-to-end encryption.

Highlights
  • Visual workspace for notes and ideas
  • Reusable content blocks (Loops)
  • Color-coded sections by intent
  • AI-powered content generation and search
  • Version history and snapshots
  • Offline functionality and end-to-end encryption
Features
Read full description

Obius — Notes that evolve. Designed for the way you think. Your ideas don't arrive in straight lines. Obius is a visual workspace where notes carry color, ideas connect to each other, and what you wrote yesterday folds into what you're building today. Built for founders, PMs, designers, researchers — and anyone who outgrew Apple Notes but never quite fit into Notion. LOOPS — WRITE ONCE, REUSE EVERYWHERE Drop a Loop into any note — a named, reusable content block like @launch_checklist or @weekly_review. Edit it in one place, every copy updates instantly. Perfect for running lists, shared context, and anything you reference more than once. SECTIONS THAT CARRY MEANING Every section has an intent — a color that tells you at a glance what kind of thinking lives there. Open ideas, questions you're sitting with, work in motion, issues to fix, things that are done. Five colors. Five intents. Your thinking, visible. — Drag and drop to reorder — Collapse, expand, and nest sections — Rich content: text, checklists, code, quotes, images, audio — Tap once to change a section's intent ECHOES — REMINDERS THAT BRING THE NOTE BACK Attach a time-based reminder to any Loop. Unlike calendar pings, an Echo resurfaces the full note when the moment matters — with all its context intact, not a one-line nag. OBIUS INTELLIGENCE AI that lives inside the workspace, not in another tab. — Generate full pages from a single prompt — Edit, rewrite, and refine content in place — no copy-pasting between apps — Smart titles that actually describe the page — Semantic search that finds ideas, not just keywords — Research context: pull what you need, paste, and think from there INSIGHTS THAT SURFACE WHAT MATTERS Obius watches your pages for patterns so you don't have to. Cleanup suggestions, related notes you forgot about, lists hiding in your text, and safety flags for leaked credentials or secrets. VERSION HISTORY, BUILT IN Every note quietly snapshots itself. Browse the timeline, restore any earlier version, watch your thinking evolve over time. No save button. No lost work. SHARE LIVE OR FROZEN Generate a short public link to share a live note that updates as you edit — or freeze a snapshot in time. Readable URLs. View counts. Comments optional. CALENDAR See your work across time. Plan ahead, look back, stay oriented — without leaving Obius. LOCAL-FIRST. PRIVATE BY DEFAULT. — Pages stored on your device first — Works fully offline; syncs when you reconnect — End-to-end encrypted sync — No tracking. No selling data. Not now, not ever. — Optional local-only mode for maximum privacy YOUR MIND. YOUR ARCHITECTURE. Obius isn't another notes app. It's a workspace shaped like thinking — simple enough to start in seconds, deep enough to grow with how you actually work. Designed for the way you think. Terms of Use (EULA): https://docs.google.com/document/d/e/2PACX-1vRq_bt_Z_V7ci7lS3hHLzq4QjRrDFJsJu6Ab-oedeeSakGPGcx_dJlG3EDAzdetptd21GPyEtzTxKbg/pub Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vRbJ9cYTWnyQSYeL8JrTOizC0eC-f8rhoicqh3GttTDIrbNlesR-_auwkFz2OLsTTzguDG3YLtzwnEY/pub

Screenshots

Index ∙ Lists & Tasks4 screens
Obius4 screens

Verdict

The call

The clearest difference is iOS requirement: Obius at 17.0 against Index ∙ Lists & Tasks's 26.0. On price, update cadence, ads and in-app purchases 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. Index ∙ Lists & Tasks sells 2 in-app purchases, starting at $1.99 per month and Obius sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Index ∙ Lists & Tasks ships an update every 10 days, Obius weekly. The most recent releases landed on September 17, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 8 level
Index ∙ Lists & Tasks versus Obius: the parameters behind the verdict, then further details
ParameterIndex ∙ Lists & TasksObius
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 10 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, iPad — better
Requires iOS26.017.0 — better
Further details — not scored
Size32 MB23 MB
Age rating4+4+
DeveloperGiulio Pimenoff VerdolinDemetri Hodges

In-app purchases

2 purchases

Index ∙ Lists & Tasks

Subscriptions2
  • Pro$1.991 Month
  • Pro$19.991 Year
4 purchases

Obius

Subscriptions3
  • Obius Pro Founder$4.991 Month
  • Obius Pro Monthly$9.991 Month
  • Pro Annual$79.991 Year
One-time1
  • Power Pack$9.99

Questions

Is Index ∙ Lists & Tasks free?
Index ∙ Lists & Tasks is free to download, with in-app purchases available.
Is Obius free?
Obius is free to download, with in-app purchases available.
Do Index ∙ Lists & Tasks or Obius have ads?
Neither Index ∙ Lists & Tasks nor Obius shows ads.
Which is updated more often, Index ∙ Lists & Tasks or Obius?
Index ∙ Lists & Tasks ships an update every 10 days, and Obius weekly. Most recently, Index ∙ Lists & Tasks was updated on September 17, 2026 and Obius on October 5, 2026.

Other comparisons