Comparison

One Calendar vs Sovernus

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

Head to head

One Calendar

All calendars in ONE place!

Free

📊 Productivity

★ 4.821K ratingsView app →

About

One Calendar

Consolidate all your digital calendars into a single, easy-to-read view. Manage appointments, events, and birthdays from various providers like Google, Outlook, iCloud, and more, all within one application.

Highlights

Integrates multiple calendar providers
Easy-to-read overview
Manage appointments and events
View birthdays
Cross-platform availability

Features

Read full description

The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays. OneCalendar is available on all platforms.

About

Sovernus

Features

Read full description

Sovernus is an app that assists people in becoming more self-sufficient. Track your chores and purchasing, get blueprints on how to more effectively manage your home, and optimize producing for your family and community.

Screenshots

One Calendar4 screens

Sovernus2 screens

Verdict

The call

The clearest difference is in-app purchases: Sovernus at none against One Calendar's 1. 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. One Calendar sells 1 one-off in-app purchase. Sovernus asks for nothing beyond the download.

UpkeepUpdate frequency

One Calendar ships an update fortnightly, Sovernus every 3 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level

One Calendar versus Sovernus: the parameters behind the verdict, then further details
Parameter	One Calendar	Sovernus
Price	Free	Free
Rating	4.8 (21K ratings) — better	—
Positive reviews	80.7% of reviews	—
Number of ratings	21K — better	—
Update frequency	Fortnightly — better	Every 3 weeks
Ads	No	No
In-app purchases	Yes	No — better
Monetization	Free with in-app purchases	—
Devices	iPhone, iPad, iPod, Mac — better	iPhone, iPad, iPod
Requires iOS	15.0 — better	15.6
Further details — not scored
Size	89 MB	47 MB
Age rating	12+	4+
Developer	Code Spark	Sovernus, LLC

Bugs and requests

One Calendar

Reported bugs

5 issues

Sync errors
Unresponsive buttons
Incorrect time zone display
Duplicate events
Inability to delete future occurrences of recurring events

Requested features

6 requests

Multiple reminders for events
Ability to edit recurring events
Option to change event calendar after creation
Printing support
More customization options

Show 1 more

Widgets for better visibility

Sovernus

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

One Calendar

One-time1

OneCalendar premium$5.99

None

Sovernus

No in-app purchases

Questions

Is One Calendar free?

One Calendar is free to download, with in-app purchases available.

Is Sovernus free?

Sovernus is free to download, with no in-app purchases.

Do One Calendar or Sovernus have ads?

Neither One Calendar nor Sovernus shows ads.

Which is updated more often, One Calendar or Sovernus?

One Calendar ships an update fortnightly, and Sovernus every 3 weeks. Most recently, One Calendar was updated on October 30, 2026 and Sovernus on October 25, 2026.