Comparison

Lock Screen Calendar vs arka

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

Head to head
About

Lock Screen Calendar

This app helps you manage your time and overcome procrastination by organizing tasks based on importance and urgency. It offers a focus timer to help you complete tasks efficiently and reduce stress.

Highlights
  • Priority setting by importance and urgency
  • Step-by-step task organization
  • Time allocation for tasks
  • Focus timer for task completion
  • Stress reduction and productivity boost
Features
Read full description

[Say Goodbye to Procrastination] The Eisenhower Matrix is a proven way to manage your time and beat procrastination. Sort your tasks by importance and urgency, focus on what matters first, and stop feeling overwhelmed. [Key Features] - Set priorities: Organize tasks by importance and urgency. - Manage your time: Fit tasks into your day and handle them efficiently. - Focus Timer: Stay focused and finish tasks within set sessions. - Everywhere: Home and Lock Screen widgets, synced across iPhone, iPad, and Mac. Many users say it helped them reduce stress and boost their productivity. Make your day clearer with CoreTask. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

arka

A straightforward application for storing links you wish to revisit later. Save content from various platforms with a single tap and add notes to recall why you saved it. Organize links into custom collections and share them with others.

Highlights
  • Save links from share sheet
  • Add notes to saved links
  • Organize links into collections
  • Open links in original apps
  • Share collections with friends
  • Import collections from text
  • Local data storage, no account needed
Features
Read full description

Remember that link you saved to check out later? Where did it go? arka is a simple place to keep all the links you want to come back to. Instagram Reels, YouTube videos, Naver Blog posts, Pinterest images, and more. Save anything you want to revisit with just one tap from the share sheet, and add a quick note to remember why you saved it. Save it the moment you find it Choose arka from the share sheet to save a link without even opening the app. Add a quick note for later “Peanut sandwich recipe” “Cafe to visit this weekend” Leave yourself a short note so you’ll remember exactly why you saved each link. Keep everything organized in collections Create your own collections for recipes, interiors, places to visit, or anything else you want to keep together. Open links where they belong Tap a saved card to open the original link. Instagram links open in Instagram, YouTube links in YouTube. Share an entire collection with friends Turn a collection of links into text and send it to a friend. If someone sends you an arka collection, you can import the text and bring the collection and its links right into the app. Your links stay on your device No account required. Your saved data stays on your device, and you can also keep and manage your own backups. No ads. No subscriptions. Just a simple place to save the things you want to find again. Supported services: Instagram · Threads · YouTube and Shorts · Naver Map · Naver Blog · Tistory · Pinterest

Screenshots

Lock Screen Calendar4 screens
arka4 screens

Verdict

The call

The clearest difference is in-app purchases: arka at none against Lock Screen Calendar's 7. arka also leads on review sentiment (100% vs 88%). On price, update cadence, ads and device support 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. Lock Screen Calendar sells 7 in-app purchases, starting at $4.49 per month. arka asks for nothing beyond the download.

UpkeepUpdate frequency

Lock Screen Calendar ships an update every 3 days, arka every 5 days. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Lock Screen Calendar versus arka: the parameters behind the verdict, then further details
ParameterLock Screen Calendararka
PriceFreeFree
Rating5.0 (19 ratings) — better—
Positive reviews88.2% of reviews100.0% of reviews — better
Number of ratings19 — better—
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size38 MB3 MB
Age rating4+4+
DeveloperGridus Co.jin kyung choi

Customer experience

Lock Screen Calendar

All ratings19 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews93 reviews
Positive88.2%
Neutral9.7%
Negative2.2%

arka

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

7 purchases

Lock Screen Calendar

Subscriptions5
  • Monthly Plan$4.491 Month
  • Weekly Plan$4.497 Days
  • Monthly Plan$5.991 Month
Show 2 more
  • Annual Plan$29.991 Year
  • Annual Plan1 Month trial$39.991 Year
One-time2
  • Lifetime Plan$29.99
  • Lifetime Plan$59.99
None

arka

No in-app purchases

Questions

Is Lock Screen Calendar free?
Lock Screen Calendar is free to download, with in-app purchases available.
Is arka free?
arka is free to download, with no in-app purchases.
Do Lock Screen Calendar or arka have ads?
Neither Lock Screen Calendar nor arka shows ads.
Which is updated more often, Lock Screen Calendar or arka?
Lock Screen Calendar ships an update every 3 days, and arka every 5 days. Most recently, Lock Screen Calendar was updated on October 16, 2026 and arka on October 12, 2026.

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