Comparison

Atomic Calendar vs DoTree

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

Head to head
About

Atomic Calendar

Features
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Plan Confidently. Stay Organized. Stay Private. Atomic Calendar, part of the Atomic Blend suite, is your privacy-first calendar designed to organize your schedule, protect your data, and keep your life in sync โ€” all secured with end-to-end encryption. Why Atomic Calendar? โ€“ End-to-End Encrypted Events โ€“ Your events, titles, notes, and attendees are encrypted so only you can access them. โ€“ Private by Default โ€“ No tracking, no profiling, no behavioral analytics. Your schedule stays yours. โ€“ Simple & Focused Design โ€“ A fast, distraction-free interface to plan without friction. โ€“ Powerful Organization โ€“ Multiple calendars, color labels, search, and smart views to stay on top of your time. โ€“ Secure Sync Across Devices โ€“ Access your calendar everywhere while keeping your data private. โ€“ Unified with Atomic Blend โ€“ One subscription unlocks all apps in the suite. From daily planning to long-term projects, Atomic Calendar helps you stay organized with clarity โ€” without sacrificing your privacy or control. --- About Atomic Blend Atomic Blend is a privacy-first, 100% open-source app suite that includes Atomic Task, Atomic Notes, Atomic Mail, Atomic Calendar, and more โ€” all designed to work together seamlessly under a single subscription. Built for people who value simplicity, transparency, and control, Atomic Blend is your alternative to bloated, data-hungry SaaS tools. No ads. No tracking. Just powerful tools that respect you. --- Terms & Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://brandonguigo.notion.site/Politique-de-confidentialit-17591ec0b6688166b781cf05f89d3a2d

About

DoTree

Features
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Most task apps flatten your life into a list. DoTree doesn't. Here you break a goal down as far as you actually think โ€” from the big ambition to the next small step. Folders inside folders, like a file system. Everything draggable, like files. And when it's time to work, you never have to look at the tree: the Active view shows only what's due now. โ€ข A TREE, NOT A LIST: unlimited depth, projects with progress bars โ€” weighted by effort if you want โ€ข WHAT'S ACTUALLY DUE: the Active view pulls today out of a thousand tasks, grouped by date or by priority โ€ข IMPORTANT, OR MERELY URGENT: an Eisenhower matrix separates the two โ€” and shows what's allowed to wait โ€ข BEFORE YOU OVERCOMMIT: the Forecast adds up every day's hours and flags the ones where you've planned more than fits โ€ข SPEAK IT INSTEAD OF TYPING: say what's on your mind and DoTree turns it into a structured outline with dates and effort, on device, for you to review before anything is created โ€ข RECURRENCE THAT THINKS: fixed to a date even when things pile up, or starting over once you're done โ€” weekdays, month days, multi-year rhythms โ€ข DATES THAT INHERIT: subtasks take start and due dates from above, with optional times โ€ข YOUR OWN ORDER: contexts with icons and colors, life areas, stars, and an idea store for everything that isn't a commitment yet โ€ข APPLE CALENDAR: task time spans appear as entries in dedicated DoTree calendars, and move along when your dates change โ€ข REMINDERS: push tasks to Apple Reminders and check them off on either side โ€” done is done, everywhere โ€ข ATTACHMENTS: photos straight from the camera, voice notes, videos, files โ€ข BRING YOUR STUFF: import from MyLifeOrganized (XML), export everything as JSON whenever you like โ€ข EVERYWHERE YOU WORK: iPhone, iPad, and Mac โ€” with a widget and optional Face ID lock YOUR DATA STAYS YOURS No account. No sign-up. No subscription, no ads, no analytics, no trackers. Your content lives on your device and syncs through your own private iCloud โ€” we run no server and cannot read any of it. Dictation stays on your device by default, too. DoTree is free, and it stays free. Your plan. Your tree. Your data. DoTree is not affiliated with MyLifeOrganized.

Screenshots

Atomic Calendar4 screens
DoTree4 screens

Verdict

The call

The clearest difference is update cadence: DoTree at every 2 days against Atomic Calendar's every 4 months. Atomic Calendar's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Atomic Calendar ships an update every 4 months, DoTree every 2 days. The most recent releases landed on September 30, 2026 and September 18, 2026 respectively.

Scorecard2 real differences ยท 4 level
Atomic Calendar versus DoTree: the parameters behind the verdict, then further details
ParameterAtomic CalendarDoTree
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 โ€” better18.0
Further details โ€” not scored
Size79 MB5 MB
Age rating4+4+
DeveloperBrandon GuigoLars Bruckschen

In-app purchases

None

Atomic Calendar

No in-app purchases

None

DoTree

No in-app purchases

Questions

Is Atomic Calendar free?
Atomic Calendar is free to download, with no in-app purchases.
Is DoTree free?
DoTree is free to download, with no in-app purchases.
Do Atomic Calendar or DoTree have ads?
Neither Atomic Calendar nor DoTree shows ads.
Which is updated more often, Atomic Calendar or DoTree?
Atomic Calendar ships an update every 4 months, and DoTree every 2 days. Most recently, Atomic Calendar was updated on September 30, 2026 and DoTree on September 18, 2026.

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