Comparison

Noji vs Human Heart

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

Head to head
About

Noji

Create and study digital flashcards using an enhanced spaced repetition algorithm to maximize learning. Access a vast library of pre-made decks or collaborate online. Ideal for students, teachers, and language learners.

Highlights
  • Create and study digital flashcards
  • Enhanced spaced repetition algorithm
  • Customizable card appearance
  • 50k pre-made deck library
  • Online collaboration
  • Web version for cross-device use
Features
Read full description

Noji helps you to remember anything! In the app you create and study flashcards. Having been build on an enhanced spaced repetition algorithm, the app helps you to get the maximum out of studying new materials. Millions of people use the app to remember lecture materials, prepare for exams and learn new vocabulary. Noji has a web version that allows you to use the app across all your devices. Powerful features, sleek design, fast performance, online collaboration, all of these help Noji to become an effective study helper. The app will help you to create nice and easy to use digital flashcards and avoid managing a pile of uncategorized physical index cards. Here are the benefits you get from the Noji flashcards app: - Create and study flashcards - Use different customizations to make cards look the way you want - Explore a 50k pre-made deck library How people use Noji: - Students - study lecture materials during the year and prepare for exams. Millions of students get the highest grades by studying index cards using spaced repetition technique. - Teachers - Noji app helps to make a database of knowledge in the format of revision cards and share it with students. - Language learners - flashcards are well known as the best way to study new vocabulary. The huge library helps to find a perfect ready-to-use deck and not to waste time creating your own flashcards. App interface is simple and clear but at the same time, the app is extremely powerful. The app allows you to have thousands of flashcards and makes it easy to manage them. WHAT OUR USERS SAY ABOUT THE NOJI: "Finally, I found the app that I can intuitively use! I don't need to watch tons of videos to understand how to create and learn cards in other srs products. It's so easy here. I'm in love with Noji!" - Jeffrey Houng "I use the app to prepare for the MCAT exam. I can say that it definitely works! " - Matthew Moore "Flashcards is the thing that changed my habits to study Japanese. Using spaced repetition I can study new words and don't forget them in a few weeks as it used to be." - Alysa Tossou The app is fully supported by a professional team. You'll constantly get new features, improvements, and bug fixes. We also love getting personalized feedback, so don't be shy to message us right in the app! We personally answer all messages. Privacy Policy: https://noji.io/privacy-policy/ Terms of Use: https://noji.io/terms-of-use/

About

Human Heart

Explore a 3D, anatomically accurate human heart with augmented reality. Learn about its structure, function, and the cardiac cycle through interactive exploration, detailed pins, and adjustable beating rates.

Highlights
  • 3D anatomical heart model
  • Augmented reality view
  • Cross-section exploration
  • Interactive pins with descriptions
  • Blood flow visualization
  • Adjustable beating rate
Features
Read full description

The human augmented reality heart is a unique application designed to support and enhance the learning of the structure and function of the heart as part of the Open University modules, or as a stand-alone app. The app consists of an anatomically accurate heart which can be viewed in three dimensions, in cross section and also as a ‘zoomed in’ virtual exploration. The app has a range of functions to help develop the learning and understanding of how the heart beats and the cardiac cycle. By selecting ‘Show pins’ all the major anatomical structures of the human heart are identified and selecting a pin provides the name and description. There is the option to show the blood flow through the heart. All the options are available as a stationary or beating heart, the rate of which can be fully adjusted aiding the understanding of the mechanical events of the heartbeat. The app will help students at all educational levels to develop and extend their knowledge and understanding of the heartbeat. You can access the AR trigger image below or using the app: https://www.open.ac.uk/apps/sites/www.open.ac.uk.apps/files/images/ar-trigger-images/human-heart-app-image-trigger.jpg

Screenshots

Noji4 screens
Human Heart4 screens

Verdict

The call

The clearest difference is in-app purchases: Human Heart at none against Noji's 21. Human Heart also leads on ads (none vs shown) and iOS requirement (12.0 vs 16.4). Noji's advantage is update cadence (every 8 days vs every 37 months) and review sentiment (64% vs 50%). On price and device support 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. Noji sells 17 in-app purchases, starting at $4.99 per month. Human Heart asks for nothing beyond the download.

UpkeepUpdate frequency

Noji ships an update every 8 days, Human Heart every 37 months. The most recent releases landed on November 1, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
Noji versus Human Heart: the parameters behind the verdict, then further details
ParameterNojiHuman Heart
PriceFreeFree
Rating4.6 (14K ratings) — better—
Positive reviews64.1% of reviews — better50.0% of reviews
Number of ratings14K — better—
Update frequencyEvery 8 days — betterEvery 37 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.412.0 — better
Further details — not scored
Size195 MB131 MB
Age rating4+4+
DeveloperDELIGHTHUB PTE. LTD.The Open University

Customer experience

Noji

All ratings14,014 ratings
Positive89.3%
Neutral2.9%
Negative7.7%
Written reviews2,119 reviews
Positive64.1%
Neutral7.1%
Negative28.7%

Human Heart

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Noji

Reported bugs

4 issues
  • Issues with uploading and editing images on cards
  • Problems with card review timing and scheduling
  • Decks not loading or disappearing
  • Connectivity issues and server errors

Requested features

5 requests
  • Add offline mode
  • Improve deck organization and management
  • Allow more customization of card layout and formatting
  • Implement better syncing and backup options
  • Add more language support for text-to-speech

Human Heart

Not enough reviews yet to summarise bugs or requests.

In-app purchases

17 purchases

Noji

Subscriptions15
  • AnkiPro Premium 1 Month1 Month trial$4.991 Month
  • Premium Access: 30 Days3 Days trial$4.991 Month
  • Premium 1 Month$4.991 Month
Show 12 more
  • AnkiPro Premium 1 Month$4.991 Month
  • AnkiPro Premium Annual$17.991 Year
  • AnkiPro Premium 6 Months$19.996 Months
  • Premium Monthly New$19.991 Month
  • Premium 1 Month$19.991 Month
  • Noji Flashcards - Premium Plan3 Days trial$29.991 Year
  • Anki Flashcards - Premium Plan3 Days trial$29.991 Year
  • Flashcards Premium3 Days trial$39.991 Year
  • Premium - Annual Plan$44.991 Year
  • Premium Annual Plan new7 Days trial$89.991 Year
  • Premium - Annual Plan14 Days trial$89.991 Year
  • Premium - Annual Plan7 Days trial$89.991 Year
One-time2
  • Premium Lifetime$74.99
  • AnkiPro Premium Lifetime$74.99
None

Human Heart

No in-app purchases

Questions

Is Noji free?
Noji is free to download, with in-app purchases available.
Is Human Heart free?
Human Heart is free to download, with no in-app purchases.
Do Noji or Human Heart have ads?
Noji shows ads; Human Heart does not.
Which is updated more often, Noji or Human Heart?
Noji ships an update every 8 days, and Human Heart every 37 months. Most recently, Noji was updated on November 1, 2026 and Human Heart on October 9, 2026.

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