Comparison

Flash Notes vs OnDeen Organiser

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

Head to head
About

Flash Notes

Transform your learning with AI-powered flashcards generated from your notes. This app uses spaced repetition algorithms to adapt to your pace and syncs seamlessly across iOS and macOS devices. It's designed for advanced learners seeking a personalized and efficient way to master new concepts and vocabulary.

Highlights
  • AI-powered flashcard generation
  • Spaced repetition learning algorithms
  • Seamless multi-device synchronization
  • Secure iCloud data storage
  • Personalized learning experience
Features
Read full description

Welcome to Flash Notes: Transform Your Learning Experience Why Flash Notes? In a world overflowing with generic learning tools, Flash Notes stands out by offering a highly personalised and efficient learning experience tailored to advanced learners. Available on iOS and macOS, Flash Notes is not just an app; it's your gateway to mastering new concepts and vocabulary, whenever and wherever you choose. Intelligent and Intuitive Learning - AI-Powered Flashcards: Quickly convert your notes into dynamic flashcards. Short on time? AI can craft compelling prompts for you, making learning engaging and effective (available in pro subscription) - Tailored Learning Algorithms: Inspired by the spaced repetition method, Flash Notes adapts to your learning pace, ensuring you learn efficiently, based on your schedule. - Seamless Multi-Device Synchronisation: With CRDT technology, your notes are consistently synced across iOS and MacOS, ensuring smooth transitions from your office Mac to your iPhone on the go. Privacy-Centric Design Your data is your own. Stored securely in iCloud, Flash Notes guarantees that your learning journey remains private and accessible across all your devices. Please note that Generative AI (optional) requires sharing of your answers and note context with the LLM vendor. See privacy policy. For the Curious and Advanced Learner Forget one-size-fits-all. With Flash Notes, your learning is as unique as you are. Whether it’s new professional terminology or intriguing concepts, our app is designed to help you absorb and retain knowledge effectively. Key Features: - Your structured notes are flashcards. - Advanced AI for contextual flashcard generation. - Personalised learning with algorithms modelled on the forgetting curve. - Secure, iCloud-based data storage for privacy. - CRDT technology for reliable, error-free data synchronisation. - Perfect for learners seeking a personalised, advanced learning experience. Join the Learning Revolution Download Flash Notes today and start a learning journey that respects your time, adapts to your pace, and aligns with your personal and professional goals. Craft Your Knowledge: Bespoke Learning, Anytime, Anywhere. Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://www.flashnotesapp.com/privacy-policy

About

OnDeen Organiser

Features
Read full description

OnDeen Organiser – Manage Your Events, Reach the Right Audience Built for masjids, speakers, and event organisers, OnDeen helps you create, manage, and promote Islamic events with ease, while connecting you to a high-intent audience. All-in-one event tools: Easily set up events, add ticketing, track sign-ups, and scan QR codes for check-in, all from your phone. Grow your community: Get visibility through our scholar backed platform and event discovery engine that puts your events in front of the right people. Trusted by scholars and masjids: Built with guidance from Islamic scholars, ensuring your content is represented in a platform that values authenticity and knowledge. Download and get started with OnDeen Organiser today, manage your events the right way.

Screenshots

Flash Notes3 screens
OnDeen Organiser4 screens

Verdict

The call

The clearest difference is in-app purchases: OnDeen Organiser at none against Flash Notes's 2. OnDeen Organiser also leads on iOS requirement (15.1 vs 17.0). Flash Notes's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Flash Notes sells 2 in-app purchases, starting at $2.99 per month. OnDeen Organiser asks for nothing beyond the download.

UpkeepUpdate frequency

Flash Notes ships an update every 3 days, OnDeen Organiser every 3 weeks. The most recent releases landed on September 15, 2026 and September 9, 2026 respectively.

Scorecard3 real differences Β· 5 level
Flash Notes versus OnDeen Organiser: the parameters behind the verdict, then further details
ParameterFlash NotesOnDeen Organiser
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 3 days β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFreemiumβ€”
DevicesiPhone, iPad, Mac β€” betteriPhone, iPod
Requires iOS17.015.1 β€” better
Further details β€” not scored
Size7 MB75 MB
Age rating17+4+
Developercr3studio ltdALIF Solutions DMCC

In-app purchases

2 purchases

Flash Notes

Subscriptions2
  • Pro Monthly Subscription7 Days trial$2.991 Month
  • Pro Yearly Subscription7 Days trial$29.991 Year
None

OnDeen Organiser

No in-app purchases

Questions

Is Flash Notes free?
Flash Notes is free to download, with in-app purchases available.
Is OnDeen Organiser free?
OnDeen Organiser is free to download, with no in-app purchases.
Do Flash Notes or OnDeen Organiser have ads?
Neither Flash Notes nor OnDeen Organiser shows ads.
Which is updated more often, Flash Notes or OnDeen Organiser?
Flash Notes ships an update every 3 days, and OnDeen Organiser every 3 weeks. Most recently, Flash Notes was updated on September 15, 2026 and OnDeen Organiser on September 9, 2026.

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