Comparison

PDF Notes C vs Trance

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

Head to head
About

PDF Notes C

This app offers a streamlined PDF viewing experience with a 2-page display, fast page turns, and annotation tools. It also provides quick previews for various file types and a document browser for easy organization.

Highlights
  • 2-page PDF viewer
  • Fast page turns
  • Handwriting tools
  • Document browser
  • Quick file previews
  • PDF creation and assembly
Read full description

PDF Notes C is a sister app of PDF Notes S that excludes cache to reduce CPU, memory, battery usages, and cache storage. PDF Notes C gives you a 2 pages viewer with horizontal/vertical scroll, and cache for fast page turns, and thumbnail scrollbar. PDF Notes C gives you ZIP Preview, Quick Look of documents, images, music, videos, and etc. PDF Notes C gives you Document Browser so that you can organize all your files very easily. PDF Viewer - 1 page or 2 pages, horizontal or vertical fast page turns - Scroll or turn pages by tap on sides - 8 handwriting tools that you can adjust color and line width - Horizontal or vertical thumbnail scrollbar - PDF outlines, bookmarks, and annotations list - PDF search - Cache manager supports 3 modes, permanent cache, automatic cache, and no cache - PDF creation and assembly (move/rotate/insert/remove pages) Quick Look, ZIP Preview - PDF, RTF, TEXT - iWork documents, Office documents - Images, Music, PiP Videos - Without Unzip, preview ZIP contents (password may be requested if locked) Advertisements before upgrade - Banner ads can be shown at the bottom - Interstitial ads can be shown per 30 minutes Information about the auto-renewable nature of the subscription - Payment will be charged to iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. A link to privacy policy and terms of use - http://blog.musebook.com/2017/03/privacy-policy.html The length of the subscription - Monthly NOTE: All content contained herein is subject to change without notice.

About

Trance

Features
Read full description

Set how long you want to focus, press start — and your own galaxy awakens on screen. Finish your session and a new star is born, glowing along a spiral arm. This simple rule turns "putting your phone down" into a joy. With Trance, focus isn't something you endure — it's the joy of growing your own galaxy. And it's completely free — with no ads. ■ How it works · Pick a focus length — preset buttons, or turn the ring minute by minute (1–180 min) · Your galaxy lives and turns while you focus · Finish, and a new star is born ■ Features · A living galaxy — luminous line-art drawn in light, a gently turning spiral · One evolving galaxy — every session adds stars and constellations to a shape that's yours alone · Star color & size — shaped by when and how long you focused · Weekly constellations — reach your weekly goal to connect that week's stars into a named figure · Constellation collection — revisit completed constellations and include them in your galaxy poster · 16 focus soundscapes — from real Mars wind recorded by NASA's Perseverance rover to rain, thunder, forest, waves, campfire, café and a singing bowl · Free poster — save and share your galaxy as a single image · Focus stats & insights — streaks, completion rate, a "night sky" activity map · Evolving galaxy shapes — spiral → barred → elliptical → ringed → irregular as you grow · 5 galaxy themes — Cyan / Rose / Emerald / Abyss / Aurora nebulae · Home & lock-screen widgets, plus a lock-screen timer (Live Activity) · No ads · no account — your focus history stays on-device (non-linked product analytics only) Start focusing — the most beautiful way. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PDF Notes C4 screens
Trance4 screens

Verdict

The call

The clearest difference is in-app purchases: Trance at none against PDF Notes C's 1. Trance also leads on ads (none vs shown) and update cadence (every 2 days vs every 6 weeks). PDF Notes C's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price 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. PDF Notes C sells 1 in-app purchase, starting at $0.49 per month. Trance asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Notes C ships an update every 6 weeks, Trance every 2 days. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

Scorecard5 real differences · 5 level
PDF Notes C versus Trance: the parameters behind the verdict, then further details
ParameterPDF Notes CTrance
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 weeksEvery 2 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size22 MB21 MB
Age rating4+4+
DeveloperAMuseTec Co., Ltd.yusik koh

In-app purchases

1 purchases

PDF Notes C

Subscriptions1
  • Monthly Plan$0.491 Month
None

Trance

No in-app purchases

Questions

Is PDF Notes C free?
PDF Notes C is free to download, with in-app purchases available.
Is Trance free?
Trance is free to download, with no in-app purchases.
Do PDF Notes C or Trance have ads?
PDF Notes C shows ads; Trance does not.
Which is updated more often, PDF Notes C or Trance?
PDF Notes C ships an update every 6 weeks, and Trance every 2 days. Most recently, PDF Notes C was updated on September 18, 2026 and Trance on September 12, 2026.

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