Comparison

Deer vs Block It Out

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

Head to head
About

Deer

This app offers structured note-taking with features to reorder lines, convert notes to outlines, and generate mind maps. It helps organize complex information and newly learned knowledge points for clearer understanding.

Highlights
  • Freely reorder notes by line
  • One-click outline conversion
  • One-click mind map generation
  • Drag and drop paragraph reordering
  • Clearer structure visualization
Features
Read full description

Deer is a structured note-taking app. "Freely Reorder Notes" Beyond basic functions, each line in the note can be freely dragged and moved using keyboard shortcuts. You can quickly adjust the order of text in your note. “One-Click to Outline" For clearer organization of your note, you can convert them to an outline with one click. Editing text in the outline provides a clearer view of the structure. Drag and drop is also supported in outline mode, but you drag an entire paragraph. “One-Click to Mind Map" If you find the outline mode still not clear enough, you can convert it to a mind map with one click. In this ultimate mode, the disorganized information in your note becomes crystal clear. This will help you organize newly learned knowledge points or complex theoretical concepts. If you need support, or want to give your valuable suggestions, please let us know by email: todo-color@outlook.com If you choose the "subscription" purchase model, before subscribing, please know: • Monthly subscription users: Each subscription period is 1 month. • Annual subscription users: Each subscription period is 1 year. • In the "Deer" purchase window, the latest subscription price will be displayed in real time. After the payment is confirmed, or after the free trial period (if any) ends, the iTunes account will be debited. • The subscription is automatically renewed unless the auto-renewal feature is turned off 24 hours before the current subscription period. • The account will be deducted for renewal within 24 hours before the end of the current subscription period, and the renewal amount is the same as the previous subscription amount. • The user can manage the subscription service by himself, and the automatic renewal service can be turned off in the user's account settings after purchase. terms of use: Please read the following terms carefully before using the "Unlocked Full Version" value-added service provided by "Deer": 1. Subscription model This service is a subscription-based fee-based service, which means that you will pay in advance for future subscription usage. Currently, you can choose to use the service on a monthly or yearly basis. At the end of each subscription period, your subscription will be automatically renewed by default, unless you cancel the automatic renewal yourself or we cancel the service. 2. Expenses The current standard service price may change during the promotion period. When the price adjustment occurs, the new fee will be incurred in your next subscription cycle. 3. Refund The current subscription fee will not be refunded. Please be sure to cancel the service by yourself before the end of the trial. 4. Unsubscribe If you need to cancel the renewal, please cancel at least 24 hours in advance. You can cancel by the following method: open the system settings-click on Apple ID-click on subscription-select "Deer" to cancel the subscription 5. Other The same Apple ID can only open one subscription to "Deer" contact us If you have any questions about these terms of use, please contact us. Email address: todo-color@outlook.com. Link to Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy link: https://rednowapp.github.io/privacy-policy/

About

Block It Out

This app automates calendar synchronization across multiple accounts, ensuring you're never double-booked. It protects your privacy by blocking busy times without revealing personal event details, all while operating seamlessly in the background.

Highlights
  • Automated event blocking
  • Privacy protection for events
  • Seamless background synchronization
  • Customizable shadow event titles
  • Flexible filtering options
  • Support for recurring events
Features
Read full description

Block It Out is the easiest way to make sure you're never double-booked again across multiple accounts. Automatically convey availability and protect your privacy with no manual effort. Block It Out uses intelligent event blocking and performs seamless synchronization behind the scenes. Best of all, it does this without talking to the cloud or any external services. Privacy-First Design • Block out busy time in work calendars without revealing personal event details • Create "shadow events" that show you're busy without exposing sensitive information • Customize shadow event titles to maintain professional boundaries Smart Sync Rules • Set up automated rules to sync between any calendar accounts • Choose source calendars and target destination calendars • Advanced filtering options to sync only specific events • Supports recurring events with full recurrence pattern preservation Flexible Filtering • Filter events by title, duration, or custom conditions • Advanced users get hierarchical AND/OR logic for complex rules • Create sophisticated event matching patterns Seamless Background Operation • Automatic background synchronization keeps calendars updated • Real-time notifications when sync operations complete • Works across all your calendar accounts (iCloud, Google, Exchange, etc.) Perfect for Work-Life Balance • Sync personal appointments to work calendar as "busy" blocks • Maintain calendar privacy while ensuring scheduling conflicts are avoided • Professional appearance with customizable shadow event templates Perfect for Work-Work Balance • Consultants: sync your availability across competing clients • Founders: maintain clear availability across your multiple ventures, or your day job and your side hustle • Executives: give your EA access to availability across external commitments without divulging sensitive information Subscription Tiers • Free: 1 sync rule to demonstrate basic functionality • Essential: Up to 2 rules, with privacy filtering and custom shadow titles • Advanced: Unlimited rules, multiple destinations, advanced conditions, rollback capabilities, and custom templates Advanced Features (Advanced Tier) • Multiple destination calendars per rule • Custom shadow event templates and reminders • Transaction rollback system for safe operations • Hierarchical rule logic with AND/OR groups • ...and more! Whether you're coordinating between personal and work calendars, managing multiple business accounts, or simply want to maintain privacy while staying organized, Block It Out provides the automation and control you've needed since the whole thing went digital. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://block-it-out.com/privacy.html

Screenshots

Deer3 screens
Block It Out4 screens

Verdict

The call

Deer and Block It Out both sit at 4.8 stars, but that hides the real split: 100% of Block It Out's written reviews are positive against 89% of Deer's. Deer's advantage is ratings volume (6 vs 2). On price, rating, update cadence and ads 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. Deer sells 3 in-app purchases, starting at $0.99 per month and Block It Out sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Block It Out holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 89% of Deer's written reviews are positive against 100% of Block It Out's.

UpkeepUpdate frequency

Deer ships an update every 9 days, Block It Out every 10 days. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 8 level
Deer versus Block It Out: the parameters behind the verdict, then further details
ParameterDeerBlock It Out
PriceFreeFree
Rating4.8 (6 ratings)5.0 (2 ratings) — better
Positive reviews88.9% of reviews100.0% of reviews — better
Number of ratings6 — better2
Update frequencyEvery 9 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15 — better15.5
Further details — not scored
Size11 MB11 MB
Age rating4+4+
Developer佳文 潘Isaiah Weiner

Customer experience

Deer

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral11.1%
Negative0.0%

Block It Out

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Deer

Subscriptions2
  • Subscription Monthly$0.991 Month
  • Subscription Yearly$5.991 Year
One-time1
  • Lifetime VIP$9.99
2 purchases

Block It Out

Subscriptions2
  • Block It Out - Essential$4.991 Month
  • Block It Out - Advanced$19.991 Month

Questions

Is Deer free?
Deer is free to download, with in-app purchases available.
Is Block It Out free?
Block It Out is free to download, with in-app purchases available.
Which has better reviews, Deer or Block It Out?
Block It Out is rated higher. Deer averages 4.8 out of 5 from 6 ratings, while Block It Out averages 5.0 from 2 ratings.
Do Deer or Block It Out have ads?
Neither Deer nor Block It Out shows ads.
Which is updated more often, Deer or Block It Out?
Deer ships an update every 9 days, and Block It Out every 10 days. Most recently, Deer was updated on September 22, 2026 and Block It Out on September 19, 2026.

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