Comparison

Flexcil Note & Good PDF Reader vs CRUMB

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

Head to head
About

Flexcil Note & Good PDF Reader

This app is a comprehensive note-taking and PDF reader designed for Apple devices. It allows users to edit PDFs, annotate documents, create bullet journals, and record audio, all while offering intuitive gesture controls and seamless integration with cloud services.

Highlights
  • Edit PDF pages
  • Annotate documents with gestures
  • Record and playback audio
  • Create bullet journals
  • Cloud sync across devices
  • Masking pen for precise annotations
Features
Read full description

Flexcil: The world’s ultimate iOS note-taking app Loved by Apple Editors - Editor's Choice, App of the Day, Note-taking on the next level, College Life, Apple Pencil Enhanced, New Apps We Love, Noteworthy Apps & Game, Productivity Boost for teachers Whether you’re taking notes, bullet journaling, reading documents, or editing pages from textbooks ー use Flexcil! It’s the #1 note-taking tool for any Apple device. Simply highlight by pen gestures and capture images and text on the study-note by pen gestures! Save time transcribing summaries by gestures on study-note with your Apple pencil. ALL IN ONE NOTE TAKING • Edit PDF pages • Annotate almost anything • Endless pen colors, sizes, and fonts • Seamlessly highlight and underline text with GESTURE • Summarize and organize your thoughts, texts and notes • Instantly open any PDF for reading and studying • Zoom to read small text • Organize and manage your books AND notes EASY AND INTUITIVE • Drag and paste text flawlessly • Add text and annotate with ease • Smooth Image selection • Reading and pen gesture mode - FLEXCIL EXCLUSIVE • Search the dictionary for any definitions you need • Improved the tiring, old-fashioned way of writing which results in wrist/palm pain BULLET JOURNAL & TAKE BETTER NOTES • Easily create bullet journal pages • Hundreds of colors and pen stroke sizes • Colorful covers & templates • Endless creativity ー perfect for artists, hobbyists, or anyone that wants to make studying more fun • Proven to boost productivity & happiness RECORD & PLAYBACK AUDIO • Record everything you hear whenever you take class notes or writing meeting notes • Replay audio recording and review what you wrote during the class or in the meeting • Tab on your note and hear what was said at the moment MULTITASK • Use Flexcil while other apps are open - take notes during lectures! • Edit 2 PDFs at once • Advanced viewing: full screen view, vertical scroll, 4-page view, and so much more COMPATIBLE WITH: • Zoom • Google Classroom • Google Drive • Dropbox • Box • iCloud • Notes • Digital textbooks • ebooks • PDFs and more! APPLE PENCIL • Simulate real-life note-taking by using your Apple Pencil - easy to use for all ages • Guaranteed ZERO touch malfunctions • Support Apple pencil 2nd generation & double tap Plus, enjoy these NEW FEATURES! • Cloud sync: Access your notes from anywhere, and seamlessly sync across devices. • Masking pen: Enhance your annotations with precision using the masking pen. Take your note-taking to the next level with Flexcil. Download the most comprehensive, easy to use, and innovative study tool on the App Store today! * Support: https://support.flexcil.com * Website: https://www.flexcil.com * Twitter: https://www.twitter.com/flexcil * Facebook: https://www.facebook.com/flexcil * Youtube: https://www.youtube.com/channel/UCjro4WpiFnxqKxAXQmASNwg [Access Permission Guide] • Storage (Photos and Videos): Used for adding images to documents in Flexcil, accessing PDF files, purchasing and downloading store content. • Music and Audio: Used for voice recording features, purchasing and downloading store content. • Microphone: Used for voice recording. • Camera: Used for taking pictures when adding photos. • Notifications: Used to display important notification content.

About

CRUMB

Explore and build electronic circuits in an interactive 3D environment. Learn circuit basics, experiment with components, and analyze performance with built-in tools without the risk of damaging real parts.

Highlights
  • Interactive 3D circuit construction
  • Wide selection of electronic components
  • Study transistors and audio filtering
  • Program EEPROMs
  • Built-in oscilloscope and analysis views
  • Prototype analysis before real-world construction
Features
Read full description

CRUMB offers an easy to use and interactive introduction to electronic circuits Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program For the beginner, it is possible to learn and understand the basics of interactivity, and for the enthusiast it is possible to analyse and perfect prototypes before constructing real world models Using the built in oscilloscope and analysis views, it is possible to see clearly the interaction between components from within the wires themselves Through community feedback and suggestion, there will be many more components and features added. For a full feature list and development schedule please visit the website http://www.crumbsim.com

Screenshots

Flexcil Note & Good PDF Reader4 screens
CRUMB4 screens

Verdict

The call

The clearest difference is price: Flexcil Note & Good PDF Reader at Free against CRUMB's $7.99. CRUMB's advantage is in-app purchases (none vs 13) and ads (none vs shown). On rating, review sentiment, ratings volume and update cadence 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

Flexcil Note & Good PDF Reader is free to download; CRUMB costs $7.99 up front. Flexcil Note & Good PDF Reader sells 13 one-off in-app purchases. CRUMB asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Flexcil Note & Good PDF Reader against 4.4 for CRUMB. Both are backed by a comparable volume of ratings — 408 and 138 respectively. Written reviews are what separate them: 59% of Flexcil Note & Good PDF Reader's written reviews are positive against 56% of CRUMB's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Flexcil Note & Good PDF Reader versus CRUMB: the parameters behind the verdict, then further details
ParameterFlexcil Note & Good PDF ReaderCRUMB
PriceFree — better$7.99
Rating4.4 (408 ratings)4.4 (138 ratings)
Positive reviews59.3% of reviews — better55.6% of reviews
Number of ratings408 — better138
Update frequencyWeeklyWeekly
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size228 MB496 MB
Age rating4+4+
DeveloperFlexcil Inc.Vital Group Limited

Customer experience

Flexcil Note & Good PDF Reader

All ratings408 ratings
Positive86.0%
Neutral4.4%
Negative9.6%
Written reviews771 reviews
Positive59.3%
Neutral11.9%
Negative28.8%

CRUMB

All ratings138 ratings
Positive85.5%
Neutral2.9%
Negative11.6%
Written reviews36 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

User reviews

Flexcil Note & Good PDF Reader

From 408 App Store ratings

What we love

  • 🚀 Best Apps for STUDENTS!!! 😀😀
  • 👍 Love this app
  • 🚀 Powerful multi-page PDF viewer
  • 👍 Great for studying
  • 👍 Excellent app for note taking

Room to improve

  • 🐛 Crashes and performance issues
  • 🐛 Syncing and backup problems
  • 🐛 Buggy handwriting recognition
  • 🐛 Unreliable palm rejection
  • 🐛 Missing key features from previous version

CRUMB

From 138 App Store ratings

What we love

  • 👍 Great for beginners
  • 💡 Good for learning new skills
  • ✨ Simple to put things together
  • 🎨 Great graphics
  • 🧩 Plenty of components

Room to improve

  • ❌ Very limited components
  • ❌ Lacks modern components
  • 🐛 Crashing frequently
  • 🐛 App crashes when using corners
  • 🐛 Crashing on Mac

Bugs and requests

Flexcil Note & Good PDF Reader

Reported bugs

5 issues
  • Sudden data loss and file deletion
  • Inability to restore purchases
  • Frequent app crashes and freezes
  • Inconsistent behavior of undo/redo functions
  • Annotations not exporting correctly

Requested features

6 requests
  • Add iCloud sync and backup
  • Improve handwriting search and recognition
  • Bring back reading mode and one-page scrolling
  • Add more pen and brush options
  • Allow customizing notebook paper styles
Show 1 more
  • Implement auto-save and version control

CRUMB

Reported bugs

11 issues
  • App crashes when using the “corners” option on jumper wires
  • Experienced some crashing on Mac
  • Component images do not rotate
  • Power rails are backwards related to real life breadboards
  • Program counters (74HC161) do not reset to 0 on a reset signal
Show 6 more
  • 74HC245 enable pin should be labeled active low but it’s not
  • EEPROM sometimes corrupts the data saved in the HEX editor
  • Many components, most commonly the transistor, lock their image in place even if deleted
  • Buttons and switches will react to touching the screen even when not touching the component location
  • Rotation is broken on the app version
  • UI can be a little flaky at times

Requested features

31 requests
  • Implement modern components (TI IC, LTC series)
  • Add 12 segment display
  • Add Arduino and other microcontrollers
  • Add a spot to code Arduino/microcontrollers
  • Allow custom wire colors
Show 26 more
  • Create circuit boards with custom colors
  • Add pre-made circuit boards
  • Ability to create custom electronic components from circuits
  • Improve corner-to-corner wire mode for breadboard/power rail connection
  • Add snap rotations and positions
  • Add CD4511 component
  • Add oscilloscope
  • Add signal generator
  • Add BJT transistors
  • Add op amp
  • Add MOSFETs
  • Add transformers
  • Add relays
  • Add AC power supply
  • Add music player for amplifier learning
  • Add more examples of classic circuits
  • Simulation pausing
  • Add hotkeys to desktop version
  • Add resistance monitoring view
  • Allow push buttons to be placed across rails
  • Add 'Show Pins' view to app version
  • Add schematic feature
  • Add manual
  • Add more functions and components
  • Add more examples
  • PC integration

In-app purchases

13 purchases

Flexcil Note & Good PDF Reader

One-time13
  • Upgrade product for old usersFree
  • Premium$8.99
  • Flexcil Standard$9.99
Show 10 more
  • 2021-2022 Color Planner$11.99
  • Flexcil NEW Design Planner 22$11.99
  • Premium & Toolbar Skin Pack$12.99
  • Hello Kitty Planner 2022$13.99
  • My Melody & Kuromi Planner 22$13.99
  • Standard & 21-22 Planner Pack$14.99
  • Standard & Design Planner Pack$14.99
  • Standard & 2023 Planner Pack$14.99
  • 2026 Ultimate Planner(Dated) : Pro$15.49
  • Nelna 6-in-1 Planner Bundle$19.99
None

CRUMB

No in-app purchases

Questions

Is Flexcil Note & Good PDF Reader free?
Flexcil Note & Good PDF Reader is free to download, with in-app purchases available.
Is CRUMB free?
CRUMB costs $7.99, with no in-app purchases.
Which has better reviews, Flexcil Note & Good PDF Reader or CRUMB?
Flexcil Note & Good PDF Reader and CRUMB are both rated 4.4 out of 5 on the App Store, from 408 and 138 ratings respectively.
Do Flexcil Note & Good PDF Reader or CRUMB have ads?
Flexcil Note & Good PDF Reader shows ads; CRUMB does not.
Which is updated more often, Flexcil Note & Good PDF Reader or CRUMB?
Flexcil Note & Good PDF Reader ships an update weekly, and CRUMB weekly. Most recently, Flexcil Note & Good PDF Reader was updated on October 15, 2026 and CRUMB on October 14, 2026.

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