Comparison

Chapters vs Sync

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

Head to head
About

Chapters

This app allows users to create and edit ePub ebook files. It supports viewing, formatting text, and saving changes. Features like iCloud sync, autosave, and unlimited undo enhance the editing experience.

Highlights
  • Create and edit ePub files
  • View documents in vertical scroll
  • Edit and format text
  • Save changes to files
  • iCloud Drive sync
  • Autosaving
  • Unlimited undo/redo
Read full description

Chapters can create new ePub documents and open existing ePub files for editing. ePub is the most widely adopted file format for ebooks. ePub files reflow their content for comfortable reading on screen of any size from smartphones to desktops. Each document's content zipped into a single file for maximum portability. It is an open and vendor-independent file format based on popular web standards, such as HTML and CSS. With Chapters, you can ▪ Open existing files and create new ePub documents ▪ View an entire document in vertical scroll view ▪ Pinch to zoom and smart zoom with double-tap ▪ Edit and format document’s text ▪ Save your changes back to the file ▪ Use Table of Contents to jump ahead (on Mac only at the moment) ▪ Print and export to PDF (on Mac only at the moment) ▪ Add cover image and modify metadata (on Mac only at the moment) Chapters also supports ▪ iCloud Drive for keeping documents in sync on all your devices ▪ Autosaving automatically saves changes in background while you are editing ▪ Unlimited undo and redo as you edit ▪ Browsing previous changes and restoring them ▪ Resume your work right where you left off once app launches ▪ Side by side multitasking with another app in full screen split view on Mac and iPad ▪ Sharing documents with others via Messages, Mail and AirDrop If you encounter a bug or app crashing, please contact app’s support at chapters@shaw.ca Thank you!

About

Sync

This app helps you compare your planned schedule with your actual daily activities. It visualizes where your time goes, highlighting discrepancies and helping you identify time-wasting habits. Integrate with Apple Health and Calendar for automatic tracking.

Highlights
  • Dual timeline for plan vs. actual
  • One-tap confirmation of planned activities
  • Habit and repeat plan creation
  • Real-time timer tracking
  • Goal setting and to-do lists
  • Apple Health and Calendar integration
  • iCloud sync across devices
Features
Read full description

Few days go exactly as planned. Sync lines up your plan and what you actually did on one timeline, and shows where they part. After a week, the hours that always slip become obvious. Plan your day in the morning, record what you did in the evening, and the two tracks line up side by side. Time that went as planned and time that drifted show in color. ■ Two tracks Plan and actual share one time axis. Drag over the hours, pick an activity, done. ■ One tap to confirm When a plan ends, Sync asks "Did it go as planned?" — Record as planned · Adjust and record · Skip. The buttons are right on the Lock Screen and in widgets. ■ Repeats and habits Turn a plan into a repeat or a habit as you save it. When you edit a repeating plan, choose "Save for this day only" or "Save for all future days." Plans that run past midnight save in one go. ■ Timer Start a timer and the actual track grows in real time. Stop it from the Lock Screen or the Dynamic Island. ■ Goals and to-dos Set weekly, monthly, or yearly time goals per activity and they fill in from your actuals. To-dos can have both a scheduled day and a deadline. ■ Apple Health, Calendar, Reminders Connect Apple Health (HealthKit) and your workouts and sleep — from Apple Watch or any app that writes to Health — flow into the actual track automatically. Read-only: Sync never writes to Health. Calendar events show beneath the plan track; choose which calendars to show, and the activity is picked for you when you import an event. To-dos stay in sync with a Reminders list. ■ Close the day Close your day before bed to see your Sync and time per activity, and leave a one-line note. ■ iPhone and iPad On iPad, Sync uses views made for the larger screen. Turn on iCloud sync to keep records in step on an iPhone and iPad signed in to the same Apple Account. Your records are stored on your device. With iCloud sync on, they move only through your own iCloud. No sign-up, no server of ours.

Screenshots

Chapters2 screens
Sync4 screens

Verdict

The call

The clearest difference is review sentiment: Sync at 100% against Chapters's 33%. Sync also leads on update cadence (every 5 days vs every 7 months) and price ($4.99 vs $9.99). Chapters's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.0). On ads, in-app purchases and monetization model 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

Chapters costs $9.99 and Sync $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Chapters ships an update every 7 months, Sync every 5 days. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Chapters versus Sync: the parameters behind the verdict, then further details
ParameterChaptersSync
Price$9.99$4.99 — better
Rating1.0 (1 ratings) — better—
Positive reviews33.3% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size1 MB10 MB
Age rating4+4+
DeveloperTwo-Byte Software Inc.037

Customer experience

Chapters

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews9 reviews
Positive33.3%
Neutral11.1%
Negative55.6%

Sync

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Chapters

No in-app purchases

None

Sync

No in-app purchases

Questions

Is Chapters free?
Chapters costs $9.99, with no in-app purchases.
Is Sync free?
Sync costs $4.99, with no in-app purchases.
Do Chapters or Sync have ads?
Neither Chapters nor Sync shows ads.
Which is updated more often, Chapters or Sync?
Chapters ships an update every 7 months, and Sync every 5 days. Most recently, Chapters was updated on October 2, 2026 and Sync on October 14, 2026.

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