Comparison

Essential vs OpenRead

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

Head to head
About

Essential

This productivity app focuses on the core essence of a calendar, inspired by Dieter Rams' philosophy of "less, but better." It provides daily weather, exchange rates, and historical events, aiming for a clean and focused user experience without unnecessary clutter.

Highlights
  • Minimalist design
  • Daily weather updates
  • Exchange rate information
  • Historical daily events
  • Focused calendar experience
Features
Read full description

Introducing Essential, a new calendar. Essential boldly holds back on colour to create a minimalist design focused on what truly matters. Unlike other apps, events carry no colours, giving your schedule a calm, well-organised feel. Essential brings a [Monthly Calendar] and a [Timeline] together on a single screen. No need to switch screens to see the details of your day. Essential is built around [Continuity]. Whether you're searching for an event or changing a setting, you can do it without leaving the page. For example, tap the magnifying glass in the top right corner. Instead of taking you to a new screen as most apps do, the icon turns straight into a search field, so you can search right where you are. Beyond its design, Essential offers a few special features. 1. Detailed Weather Useful for those who work outdoors. Hourly forecasts, daily highs and lows, and more, made for anyone who keeps an eye on the weather. 2. A little joy in checking your schedule: "On This Day" An ordinary day for some was a meaningful one for others. While checking your schedule, discover events from history based on real facts. Topics span world history, film, art, economics, design and more. 3. Postpone Move an event to the next day. Plans don't always go as planned, so Essential's postpone feature embraces that uncertainty. It simply moves your event by one day. A little room for the days that don't go perfectly. It's okay not to be perfect. 4. The Dial Essential is inspired by the design philosophy of Dieter Rams, the world-renowned industrial designer. To celebrate his work, we've included a tribute object: the dial in the bottom right corner. Press it to add (+) a new event. Turn it like a dial to move through the timeline in one-hour steps. ――― Privacy Policy: https://dieter-rams-project.minimal-calendar.workers.dev/privacy/en

About

OpenRead

Features
Read full description

Find your documents and focus on reading. OpenRead brings PDFs, documents, presentations, and spreadsheets into one on-device library. CONNECT A FOLDER ONCE Choose a folder in the Files picker. OpenRead finds supported documents in that folder and its subfolders. Add or disconnect folders whenever you need to. On iOS, access is limited to locations you select and allow. FIND THE RIGHT FILE Filter by file type, search file names, and sort by recent files or name. Open a document directly from the list. READ IN A VIEW THAT FITS Zoom and navigate PDF pages. Read HWP, HWPX, DOC, and DOCX content in a mobile reading layout. Move through PPTX slides and explore XLS, XLSX, and CSV sheets. Saved reading positions help you pick up where you left off. MAKE TEXT COMFORTABLE Adjust body text in the text reader. A separate slider in the More menu changes interface text size in the library, menu, and information pages. KEEP DOCUMENTS ON YOUR DEVICE No account or sign-in is required. OpenRead does not upload your documents or use remote conversion. Downloaded documents can be read offline. Original copies, parsed data, and reading positions stay on your device. Cloud-only files must be downloaded first. SUPPORTED FORMATS PDF, HWP, HWPX, DOC, DOCX, PPTX, XLS, XLSX, CSV, TXT, Markdown, EPUB, ODT, and RTF. Legacy PPT files are unsupported; convert them to PPTX or PDF. Password-protected documents, complex formatting, macros, and embedded objects may have limited support. Rendering depends on document structure and device capabilities. Reading features have no ads, in-app purchases, subscriptions, or app-imposed document-count limit. Terms, privacy information, and help are available in the More menu. Support: david.hwang@kakao.com

Screenshots

Essential4 screens
OpenRead4 screens

Verdict

The call

The clearest difference is update cadence: OpenRead at every 2 days against Essential's every 4 days. OpenRead also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Essential ships an update every 4 days, OpenRead every 2 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

Scorecard2 real differences Β· 6 level
Essential versus OpenRead: the parameters behind the verdict, then further details
ParameterEssentialOpenRead
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 4 daysEvery 2 days β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeβ€”
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.1 β€” better
Further details β€” not scored
Size40 MB43 MB
Age rating4+4+
DeveloperChang Hyun LeeKyoungChan Hwang

In-app purchases

None

Essential

No in-app purchases

None

OpenRead

No in-app purchases

Questions

Is Essential free?
Essential is free to download, with no in-app purchases.
Is OpenRead free?
OpenRead is free to download, with no in-app purchases.
Do Essential or OpenRead have ads?
Neither Essential nor OpenRead shows ads.
Which is updated more often, Essential or OpenRead?
Essential ships an update every 4 days, and OpenRead every 2 days. Most recently, Essential was updated on October 25, 2026 and OpenRead on October 19, 2026.

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