Comparison

Highlights vs InfiniteUp

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

Head to head
About

Highlights

This app is a fast and lightweight PDF reader designed for research. It allows users to read, highlight, and annotate documents, and then extract this information into organized notes. Advanced features include table data extraction, text recognition, and smart copying of annotations into various formats.

Highlights
  • Read and browse PDF documents
  • Highlight, underline, and strikethrough text
  • Add comments and sticky notes
  • Extract annotations into organized notes
  • Convert table data and recognize text
  • Smart copy annotations to various formats (CSV, BibTex)
  • Lookup citation metadata and DOI links
Features
Read full description

"... an app that students, academics, and anyone who does substantial amounts of PDF-based research should try" - Macstories.net "It’s the novel approach to PDF annotation that makes this app a cut above the rest"- TapSmart.com *** "App of the Day" - App Store, US *** USE HIGHLIGHTS FOR FREE Highlights is a fast and lightweight PDF reader (under 10MB) packed with features to help you do your best research. Free users have access to standard PDF reader features including document browsing, reading and annotating. There are NO ADS, time limits or tracking. READ PDF DOCUMENTS • Open PDF documents from anywhere • Browse files using the familiar document browser • Open PDFs in Single Page or Two Page scroll mode • Double tap to Smart Zoom in on a paragraph or figure • Scrub smoothly to the desired page • Search the entire document in an instant • Navigate using any connected keyboard or mouse STORE YOUR FILES WHERE YOU WANT • Full support for "Open In Place" lets you make edits to the file where it is • Access your files from iCloud Drive, Dropbox, Google Drive, OneDrive or Box using the document browser • Or keep them privately on device only HIGHLIGHT AND ANNOTATE FASTER • Select text with your finger, Apple Pencil or mouse pointer • Highlight, underline, strikethrough text and make image selections • Add comments to annotations or as individual sticky notes • Annotate with fewer taps using context aware popovers • Default annotation colors prevents you from having to repeatedly setting the color for the same type of annotation every time TURN ANNOTATIONS INTO NOTES • As you markup text and images the contents are extracted and sorted into notes • Customize the formatting and contents of your notes • Sort the annotations chronologically or create your own color coding EXTRACT TABLE DATA AND RECOGNIZE TEXT • Convert images containing text or tables to actual text and tables using machine learning - letting you get to the underlying data with a single tap SMART COPY Copy annotations to the desired format with one tap: • Text markup as text • Image selections as images • Tables as CSV • Citations as BibTex LOOKUP CITATIONS • Highlights will fetch DOI-links and metadata • Markup any reference and tap the link icon to look it up • If you have read the work already or have it in your reference manager library, Highlights will link you to it EXPORT ANYWHERE • Save or share your notes as portable files: Markdown, TextBundle, HTML, WebArchive or PDF • Share them to your favorite notes app: Apple Notes, Bear, Craft, Evernote, DEVONThink, Keep It, MindNode, Notion, Obsidian, Roam Research or Ulysses • Or send them to a colleague via mail. It's your notes, you decide where they go MUCH MORE • Dark mode • Multi-window support on iPadOS • Keyboard shortcuts and navigation • Support for system Copy and Undo gestures • Alternative app icons • Custom accent colors • Apple Pencil double-tap gestures • Power annotation tools For a full list of features see: highlightsapp.net/features HIGHLIGHTS PRO The Highlights Pro subscription unlocks advanced features on your iPhone, iPad and Mac: • Export options for other apps and easily editable formats • Extract information using table and text recognition • Customize accent colors and alternative app icons • Power annotation tools • Citation lookups • Smart Copy Highlights Pro includes a 14-day free trial. You can cancel your subscription at any time. The subscription will automatically renew unless auto-renew is turned off within 24-hour prior to the end of of the current period. Payments will be charged to your iTunes account and your account will be charged within 24-hours prior to the end of the current period. Any unused portion of a free trial period will be forfeited when you purchase a subscription. For more information about Highlights Pro: highlightsapp.net/pro Privacy Policy: highlightsapp.net/privacy Terms of Use: highlightsapp.net/terms

About

InfiniteUp

Features
Read full description

Most to-do apps are a place to store your intentions. InfiniteUp takes the thing you have been avoiding, breaks it into steps you can actually start, and stays with you until it is done. Say the thing. Type it, speak it, or photograph the list already on your desk. In seconds it comes back as ordered steps with dates that make sense, and a partner that asks the one question that changes the plan, then edits the plan in front of you when you answer. Do the next thing. Focus Mode shows what is due today and nothing else. Tick a small step, or push something to tomorrow with one tap. Up, the path of small wins, keeps the streak honest. The Briefing writes your day as a morning newspaper, from your own plan, in under a second. See the whole plan. On a computer, or on the open iPhone Duo, the same account becomes a board and a week you can drag things around on. Closed, the Duo is the phone you already know. Open, the board puts To-Do and In Progress on the left page and Complete and Future on the right, the Briefing prints as a two-page spread, and the week turns with a swipe across the fold. Nothing important sits on the fold. Share it. Invite anyone to a thing by email or a link. They see the same steps and the same conversation, and nothing lands on their board until they accept it. It works the way you do. When you start, you say what you are working towards and how you like a plan written: tiny fifteen-minute steps or bigger blocks, time estimates on or off, the most important step first. Every plan after that fits you a little better. Your data, your call. Your goals and messages are sent to Google Vertex AI so plans can be written, and Google does not train on them. Voice notes are read once and deleted in the same request. Notifications you can count on one hand, and a delete button that removes your account and everything on it. In 30 languages, including right-to-left ones, where the whole app flips rather than just the labels. Same account on iPhone, iPad, Mac, Android and the web. Made by a four-person studio in Nanaimo, British Columbia, and shaped every week with the people using it.

Screenshots

Highlights4 screens
InfiniteUp4 screens

Verdict

The call

The clearest difference is in-app purchases: InfiniteUp at none against Highlights's 3. InfiniteUp also leads on update cadence (every 5 days vs fortnightly). On price, ads, device support and iOS requirement 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. Highlights sells 3 in-app purchases, starting at $4.99 per month. InfiniteUp asks for nothing beyond the download.

UpkeepUpdate frequency

Highlights ships an update fortnightly, InfiniteUp every 5 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Highlights versus InfiniteUp: the parameters behind the verdict, then further details
ParameterHighlightsInfiniteUp
PriceFreeFree
Rating4.5 (1.6K ratings) — better—
Positive reviews53.3% of reviews—
Number of ratings1.6K — better—
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.015.0.0
Further details — not scored
Size37 MB66 MB
Age rating4+4+
DeveloperJonas Myren RibeInfiniteUp LTD.

Bugs and requests

Highlights

Reported bugs

5 issues
  • Highlights and annotations randomly disappearing
  • Text selection issues, especially with footnotes
  • Compatibility problems with certain PDF files
  • Syncing issues across devices
  • Export functionality not working as expected

Requested features

5 requests
  • Add handwriting and freeform annotation support
  • Implement a table of contents or bookmarking feature
  • Allow editing of notes directly in the app
  • Provide a one-time purchase option instead of subscription
  • Improve search capabilities with visual results and navigation

InfiniteUp

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Highlights

Subscriptions3
  • Highlights Pro: Monthly$4.991 Month
  • Highlights Pro14 Days trial$29.991 Year
  • Highlights Pro: Legacy Upgrade1 Year trial$29.991 Year
None

InfiniteUp

No in-app purchases

Questions

Is Highlights free?
Highlights is free to download, with in-app purchases available.
Is InfiniteUp free?
InfiniteUp is free to download, with no in-app purchases.
Do Highlights or InfiniteUp have ads?
Neither Highlights nor InfiniteUp shows ads.
Which is updated more often, Highlights or InfiniteUp?
Highlights ships an update fortnightly, and InfiniteUp every 5 days. Most recently, Highlights was updated on October 29, 2026 and InfiniteUp on October 30, 2026.

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