Comparison

UltraNotes vs Sleep Calculator

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

Head to head
About

UltraNotes

This app offers a versatile note-taking experience, combining handwriting, typing, and PDF annotation. Organize your thoughts with various tools, templates, and export options. Seamlessly sync across devices and present your work with ease.

Highlights
  • Handwritten notes with various pens and templates
  • Text notes with rich formatting and templates
  • PDF annotation and signing
  • Searchable text and handwriting
  • Side-by-side multitasking on iPad
  • Presentation mode with AirPlay/HDMI
  • iCloud synchronization and Google Drive backup
Features
Read full description

UltraNotes is a powerful note-taking app and writing app that supports handwriting with Apple Pencil, typing with a keyboard, and annotating PDFs. Handwritten Notes • Create notes with covers and paper templates. Built-in 19 covers and 17 templates. And you could also import your own covers and templates. • 10+ Pens and Tools: Ball Pen, Fountain Pen, Marker, Crayon, Water Color, Laser, Scribble, Tape etc. • Adjust the thickness and color of the pen tip • Draw perfect shapes and lines. • Layers (Pro): separate content into layers, show or hide them anytime. • Lasso: Convert handwriting to text, Take screenshot, Change color of handwriting. • Scribble to erase handwriting. • Write with scribble tool by using Apple Pencil, and it will convert to text instantly. • Squeeze Apple Pencil Pro to show contextual palette. • Add text box, stickers and images to make your note more beautiful. • Export note to PDF and image Text Notes • Set headings to make TOC(Table of Contents). • Format text with bold, italics, strikethrough, underline • Highlight text with colors • Bullet List, Numbered List and To-Do List. • Set your own font, font size, line spacing, paragraph spacing, and more • Attach files and images on note. • Templates: Resume, Essay, Shopping List, To-Do List, Weekly Planner etc. • Export note to PDF, RTF, HTML, Markdown and Plain TXT Annotation • Mark up PDFs. • Sign documents Search • Search text and handwritting in notes and PDFs. Multi-task • Work with two notes side-by-side on iPad. • Drag & Drop handwriting, typed text, and images between notes. Presentation • Present your notes on TV screen via AirPlay or HDMI cable. • 3 Presentation Modes: Entire Screen, Current Page and All Pages. • Use laser tool to point out the content what you’re presenting. More • Record audio while you’re taking note. • Set reminder on note. • Organize notes into categories and folders. • Move, copy and delete notes and folders. • Show notes in grid view and list view. • Sort notes by name, date etc. • Scan physical documents and import to UltraNotes. • Import PDFs and images. • Lock app with password or Face ID. Synchronization & Backup (Pro) • Synchronize notes among your iPhone, iPad, and Mac via iCloud. • Backup notes to Google Drive. ===== CONTACT US ===== Email: support@skyjos.com Twitter: @SkyjosApps Facebook: @SkyjosApp

About

Sleep Calculator

Calculate expected daily yields for ingredients and berries. Determine the amount of candies and shards required for leveling up. Streamline resource management for your game.

Highlights
  • Calculate ingredient yields
  • Calculate berry yields
  • Calculate candy needs
  • Calculate shard needs
  • Level up resource management
Features
Read full description

You can calculate the expected daily yields of ingredients and berries, as well as the amount of candies and shards needed for level up! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

UltraNotes4 screens
Sleep Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: UltraNotes at 83% against Sleep Calculator's 50%. UltraNotes also leads on ratings volume (190 vs 21). Sleep Calculator's advantage is monetization model (free vs free with in-app purchases) and rating (4.8 vs 4.6). On price, update cadence, ads and in-app purchases 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. UltraNotes sells 1 one-off in-app purchase and Sleep Calculator sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sleep Calculator holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: UltraNotes has 190 ratings behind it against 21, so its average is the more settled of the two. Written reviews complicate that: 83% of UltraNotes's written reviews are positive against 50% of Sleep Calculator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

UltraNotes ships an update every 3 weeks, Sleep Calculator every 4 weeks. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
UltraNotes versus Sleep Calculator: the parameters behind the verdict, then further details
ParameterUltraNotesSleep Calculator
PriceFreeFree
Rating4.6 (190 ratings)4.8 (21 ratings) — better
Positive reviews82.8% of reviews — better50.0% of reviews
Number of ratings190 — better21
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size39 MB109 MB
Age rating4+4+
DeveloperSkyjos Co., Ltd.issei kanda

Customer experience

UltraNotes

All ratings190 ratings
Positive88.4%
Neutral3.7%
Negative7.9%
Written reviews93 reviews
Positive82.8%
Neutral8.6%
Negative8.6%

Sleep Calculator

All ratings19 ratings
Positive94.7%
Neutral0.0%
Negative5.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

UltraNotes

Reported bugs

12 issues
  • Writing and drawing input not working
  • Page scrolling interferes with writing
  • iCloud sync not functioning
  • Export to other apps failing
  • Hand gestures changing page zoom during writing
Show 7 more
  • Shape resizing not working after cutting
  • Search functionality crashes app
  • Added pages not saving when importing PDFs
  • PDF import quirks related to iCloud sync
  • App crashes causing data loss
  • Pro version access lost unexpectedly
  • Audio recording cannot be exported

Requested features

21 requests
  • Ability to lock zoom while writing with Apple Pencil
  • Resize shapes after cutting/moving them
  • Export notes to PDF and other apps
  • Dark/light theme toggle for pages
  • Nested list item support
Show 16 more
  • Additional font options
  • More sticker varieties
  • Infinite canvas on all sides
  • Password protection for individual notes
  • Straightened highlighter tool
  • Zoom video with auto-advance feature
  • LaTeX conversion support
  • Hierarchical folder navigation panel
  • Left-right page swiping navigation
  • Borderless canvas option
  • Selection tool with resize capability
  • One-click PDF annotation save option
  • Category deletion/renaming without cloud deletion
  • Audio recording export
  • UI language selection independent of system settings
  • Finger tap to undo functionality

Sleep Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

UltraNotes

One-time1
  • UltraNotes Pro Lifetime$9.99
1 purchases

Sleep Calculator

Subscriptions1
  • Sleep Calculator Pro$0.991 Month

Questions

Is UltraNotes free?
UltraNotes is free to download, with in-app purchases available.
Is Sleep Calculator free?
Sleep Calculator is free to download, with in-app purchases available.
Which has better reviews, UltraNotes or Sleep Calculator?
Sleep Calculator is rated higher. UltraNotes averages 4.6 out of 5 from 190 ratings, while Sleep Calculator averages 4.8 from 21 ratings.
Do UltraNotes or Sleep Calculator have ads?
Neither UltraNotes nor Sleep Calculator shows ads.
Which is updated more often, UltraNotes or Sleep Calculator?
UltraNotes ships an update every 3 weeks, and Sleep Calculator every 4 weeks. Most recently, UltraNotes was updated on November 12, 2026 and Sleep Calculator on November 8, 2026.

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