ReadSync vs KanToDo
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
ReadSync
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ReadSync remembers where you stopped reading ā on every device. Open a PDF on your Mac, read to page 120, then pick up your iPhone. ReadSync opens the same document on the same page. Your highlights, notes and bookmarks are already there. WHY READSYNC ⢠Your reading position syncs automatically through iCloud ā in the free version too ⢠No account to create, no subscription, no company server holding your files ⢠Works completely offline ā syncing is a layer on top, never a requirement PICK UP WHERE YOU LEFT OFF ⢠A Continue Reading row at the top of your library, most recent first ⢠A Home Screen widget that opens the document on the page you left ⢠Nothing to press: the page is saved as you read and travels with you ⢠Handoff: the document open on your Mac appears on your iPhone, and opens on the same page READING ⢠A quiet reader that hides its controls while you read ⢠A reading lock that turns off selection, highlights and notes, so you can scroll and zoom without triggering anything by accident ⢠Keep the screen awake while a document is open ⢠Night mode that darkens the page without draining the colour from your highlights ⢠Single or two-page layout, vertical or horizontal scrolling ⢠Adjustable default zoom ⢠Translate any passage you select into your own language, on your device with Apple's built-in translation ⢠Look up any word in the dictionary without leaving the page ⢠Password-protected PDFs open too ā remember the password once, in your iCloud Keychain, and your other devices open them without asking HIGHLIGHTS AND NOTES ⢠Five highlight colours ⢠Attach a note to any passage ⢠Every highlight and note in one list ā tap to jump straight to the page ⢠Export everything from a document as a single file, to Notes, Mail or Files ⢠Nothing is written into the PDF itself; your original file stays untouched FINDING YOUR PLACE ⢠Full-text search inside the document ⢠The PDF's own table of contents ⢠Bookmarks for the pages you want to come back to YOUR LIBRARY ⢠Add files from Files or iCloud Drive ⢠Open a PDF in ReadSync from Mail, Safari, Messages or any app's share sheet ⢠Leave a file where it is, or copy it into ReadSync so it syncs across your devices ⢠Cover, progress and page count at a glance ⢠Sort by last read, title or date added ⢠Search your library by title READING STATS ⢠Total reading time, and how much of it was this week ⢠A chart of the last seven days ⢠Progress for every document you have started FREE AND PRO The free version is a whole reader, not a demo: iCloud sync, night mode, search, table of contents, bookmarks, translation and all five highlight colours, with room for 5 documents and 10 highlights or notes in each one. ReadSync Pro lifts both limits and opens reading stats and note export. It is a one-time purchase ā there is no subscription. A limit only ever stops you adding something new. Everything already in your library stays open, in full, whether you buy or not. PRIVACY ReadSync is built entirely with Apple's own frameworks and stores everything in your private iCloud database. Your documents are never uploaded to anyone else's server. Anonymous usage statistics are sent only if you agree when asked, and never include your files, page contents, notes or highlights.
KanToDo
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KanToDo turns your to-do list into a game you actually want to play. Every task you finish earns XP and coins, extends your streak, levels up your profile and unlocks achievements. Instead of a list that only ever grows, you get visible progress ā and a reason to come back tomorrow. A BOARD THAT ADAPTS TO YOUR DAY Three views on the same tasks, one tap apart: ⢠Classic Kanban ā To-do, In Progress, Done, with drag & drop between columns ⢠Today Focus ā due today, overdue and up next, so you always know where to start ⢠Eisenhower Matrix ā sorted by importance and urgency for days when everything feels urgent TASKS WITH EVERYTHING YOU NEED ⢠Notes, categories, priorities and due dates ⢠Subtasks you can add, check off and delete ⢠Recurring tasks (daily, weekly, monthly) that automatically create the next one when you complete them ⢠Custom XP and coin rewards per task ⢠An archive for finished work, so your board stays clean PROGRESS YOU CAN SEE ⢠XP bar, levels and rank titles that grow with you ⢠Daily streaks ā including your all-time longest streak ⢠Achievements for milestones like your first quest, a 7-day streak or 1,000 XP ⢠Weekly quests that track what you actually completed this week ⢠Weekly review with a bar per weekday, category breakdown and highlights HABITS, NOT JUST TASKS Build routines next to your to-dos. Habits can be completed once a day, keep their own streak and pay out XP and coins just like tasks. Create, edit and delete them however your week works. A REWARD SHOP FOR REAL LIFE Spend the coins you earn on rewards you define yourself ā a coffee break, a movie night, a new notebook, whatever motivates you. Not your thing? Hide the shop in Settings and keep the rest. MAKE IT YOURS ⢠Light, dark or system theme ⢠Accent colors that recolor the whole app ā with matching alternate app icons ⢠Avatars that evolve with your level, or use your own photo ⢠Your own categories with names, symbols and colors ⢠Optional confetti and level-up moments ā turn them off if you prefer calm ⢠Optional daily streak reminder so a good run doesn't end by accident YOUR DATA, ON EVERY DEVICE Switch on iCloud sync and your tasks, habits, rewards and progress stay in step across iPhone, iPad and Mac ā through your own private iCloud account. No sign-up, no extra account, no server of ours in between. Prefer to keep everything on one device? Leave sync off; KanToDo works fully offline either way. BUILT FOR IPHONE, IPAD AND MAC Native SwiftUI throughout: a tab layout on iPhone, a sidebar split view on iPad and Mac, haptics where they help and nowhere they don't. STARTS WITH SOMETHING TO DO A short setup asks for your name and the categories you care about, then sets up a board with example quests, habits and rewards. Reset everything with one tap once you're ready for your own. KanToDo is free and supported by ads. A single one-time purchase removes them for good ā no subscription, ever. Create your first quest, finish it, and watch the XP roll in. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://v4ulthunt3r.github.io/KanToDoWeb/en/app-privacy.html
Screenshots
Verdict
The clearest difference is ads: ReadSync at none against KanToDo's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. ReadSync sells 1 one-off in-app purchase and KanToDo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ReadSync ships an update every 3 weeks, KanToDo every 5 weeks. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.
| Parameter | ReadSync | KanToDo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks ā better | Every 5 weeks |
| Ads | No ā better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, Mac ā better | iPhone, iPad |
| Requires iOS | 18.0 | 18.0 |
| Further details ā not scored | ||
| Size | 4 MB | 43 MB |
| Age rating | +4 | 4+ |
| Developer | Alper Albayrak | Peter Hildel |
In-app purchases
ReadSync
- Unlock Pro$7.99
KanToDo
- iCloudSync & Adfree$3.99









