AppCorpus MCP gives your agent current app data, prices, screens, features and sources.
View JSON
GET /api/v3/apps/1533923364
{
"app_id": 1533923364,
"canonical_url": "https://appcorpus.com/apps/feyn-flashcards-1533923364",
"identity": {
"name": "Feyn - Flashcards",
"slug": "feyn-flashcards",
"developer": {
"name": "Joaquin Alori",
"url": "https://appcorpus.com/developers/joaquin-alori-developer_e55a90ed8429fc657c2df6e95ebbf9a0"
},
"icon_url": "https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/35/c2/85/35c28528-bc14-41c4-3ac0-35c129003439/AppIcon-0-0-1x_U007emarketing-0-0-0-8-0-0-sRGB-85-220.png/512x512bb.jpg",
"stores": [
"apple"
],
"platforms": [
"iphone",
"ipad"
],
"status": {
"state": "active",
"label": "Active",
"last_checked": "2026-08-06",
"last_checked_label": "6 Aug 2026",
"banner": null,
"region_note": null
}
},
"listings": [
{
"store": "apple",
"status": "ACTIVE",
"url": "https://apps.apple.com/us/app/feyn-flashcards/id1533923364?uo=4",
"rating": 4.3,
"rating_count": 98,
"formatted_price": "Free",
"is_free": true,
"has_iap": true,
"has_subscription": false,
"version": "1.1.0",
"updated": "2025-11-19",
"currency": "USD"
}
],
"summary": {
"one_liner": null,
"summary": null,
"best_for": [],
"not_for": [],
"status": "fallback",
"at_a_glance": [
"From $5.99/mo",
"Free to download",
"In-app purchases"
]
},
"categories": {
"official": [
"Education",
"Productivity"
],
"appcorpus": [
{
"category_id": "education",
"label": "Education",
"url": "https://appcorpus.com/categories/education"
},
{
"category_id": "productivity",
"label": "Productivity",
"url": "https://appcorpus.com/categories/productivity"
}
]
},
"use_cases": [],
"features": [
{
"capability_id": "free_app",
"label": "Free app",
"availability": "yes",
"access_level": "free",
"scope": null,
"evidence": "Store published"
},
{
"capability_id": "in_app_purchases",
"label": "In-app purchases",
"availability": "yes",
"access_level": "free_limited",
"scope": null,
"evidence": "Store published"
}
],
"pricing": [
{
"store": "apple",
"formatted_price": "Free",
"is_free": true,
"has_iap": true,
"has_subscription": false,
"currency": "USD",
"market": "es",
"last_verified": "2026-08-06",
"rows": [
"Feyn Pro (6 Months) — $5.99/month",
"Feyn Pro (6 Months) — $29.99/year ($2.49/mo)",
"Feyn Pro (6 Months) — $19.99"
]
}
],
"screens": [
{
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"alt": "Feyn - Flashcards ipad screenshot 1"
},
{
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},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 3"
},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 4"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards ipad screenshot 5"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards ipad screenshot 6"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards ipad screenshot 7"
},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 8"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards ipad screenshot 9"
},
{
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},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 11"
},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 12"
},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 13"
},
{
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"store": "apple",
"platform": "ipad",
"alt": "Feyn - Flashcards ipad screenshot 14"
},
{
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"store": "apple",
"platform": "iphone",
"alt": "Feyn - Flashcards iphone screenshot 15"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards iphone screenshot 16"
},
{
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"store": "apple",
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},
{
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"store": "apple",
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"alt": "Feyn - Flashcards iphone screenshot 18"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards iphone screenshot 19"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards iphone screenshot 20"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards iphone screenshot 21"
},
{
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"store": "apple",
"platform": "mac",
"alt": "Feyn - Flashcards mac screenshot 22"
},
{
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"store": "apple",
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"alt": "Feyn - Flashcards mac screenshot 23"
}
],
"ratings": [
{
"store": "apple",
"average": 4.3,
"count": 98,
"market": "es",
"observed_at": "2026-08-06",
"reviews": [
{
"rating": 4,
"title": "Great App - Needs Folder Nestimg",
"body": "This app is great. The feyn method has proved useful in my chemistry, orgo and anatomy classes. My only 2 points of frustration are that 1) I am unable to beat folders. As someone who loves organization, the ability to nest folders under larger folders would be incredible, especially given the quantity of decs I create. For example, I would love to be able to create an Orgo folder with sub folders for NMR and functional groups. This would be sooo helpful. The developers clearly respond to feedback and I am hopeful they will implement this much needed feature. 2) I am not (as I understand) able to selectively turn on notifications for specific decs. This feature would be really helpful as I find myself silencing all notifications due to the sheer volume of decs I have. This defeats the Feyn power a bit and I would love to utilize it more effectively.",
"author": "Sri gfcffj",
"date": "6 Aug 2026"
},
{
"rating": 5,
"title": "Simple, Neat, and Helpful!",
"body": "I’ve tried other flashcard apps and I have found them way too difficult to get into. Some are locked behind a paywall, and some have a learning curve that takes hours to get over. This is the only app I found that has a clean look and can be used for free! It genuinely helps with studying and there is no annoying ads that distract you from your valuable studying time. I don’t usually pay for subscriptions, but this app definitely deserves support! The only thing I would encourage the creators to work on is a way to make an app for windows users, since it would be even more convenient to study from a computer. This is the way to go for a flashcard app!",
"author": "ivalelove",
"date": "6 Aug 2026"
},
{
"rating": 5,
"title": "Best Flash Card on IOS",
"body": "I’m really enjoying this app and its ease of use! I’m currently learning Japanese and this was the best flash card app I could find! I do have one feature request: I would love to see one of two things 1. be able to flip cards permanently. that way i can duplicate and then flip them. 2. be able to study cards where i see the back first. this will save me some time, since i’m currently doing double the work! Update: found a way to do this after posting this review. tap and hold on the folder -> settings -> Question Side -> Back",
"author": "Brian7482615291",
"date": "6 Aug 2026"
},
{
"rating": 5,
"title": "Super useful",
"body": "I love the idea of vertical cards for working on a horizontal display. At first on loading the app I was disappointed because I traditionally make all my cards horizontal. But now after using I see your logic, because I can do half or quarter screen with another app and still create my cards! Excellent idea. The writing is good and system easy. One suggestion would be to be able to thumb flip the cards -- as reaching to the top becomes tedious. Thanks for working on this app. Handwritten cards are really best for memory retention. Get's the whole mind working.",
"author": "Merdty",
"date": "6 Aug 2026"
},
{
"rating": 5,
"title": "Great Flash Card App!",
"body": "I started using this app so that I could make flash cards to help memorize and test myself on learning Japanese works, characters, etc. There are a ton of good features that you get with the free version. If you are getting more in depth than I am it would be useful to get the subscription. But overall I’m up to 290 flash cards across 9 folders (some nested folders). These cards will sync across devices! Do recommends if you are looking for a great flash card app!",
"author": "r3v3rsal",
"date": "6 Aug 2026"
}
]
}
],
"privacy": [
{
"store": "apple",
"declarations": [
{
"title": "Data Not Linked to You",
"detail": "Analytics — Diagnostics — Crash Data",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Identifiers — Device ID",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Identifiers — User ID",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Usage Data — Advertising Data",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Usage Data — Other Usage Data",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Usage Data — Product Interaction",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Diagnostics",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Identifiers",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Usage Data",
"source": "Developer declared"
}
],
"accessibility": []
}
],
"changes": [
{
"store": "apple",
"version": "0.24.3",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.24.4",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.24.5",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.24.6",
"released_at": null,
"notes": "Improved multi card selector."
},
{
"store": "apple",
"version": "0.24.8",
"released_at": null,
"notes": "More easily add text and share your progress with friends!"
},
{
"store": "apple",
"version": "0.24.9",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.25.3",
"released_at": null,
"notes": "Improved \"Today\" view in analytics chart, bug fixes."
},
{
"store": "apple",
"version": "0.25.5",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.26.0",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.26.3",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.26.4",
"released_at": null,
"notes": "Bug fixes and general improvements."
},
{
"store": "apple",
"version": "0.26.5",
"released_at": null,
"notes": "Bugfixes and improvements."
},
{
"store": "apple",
"version": "0.26.6",
"released_at": null,
"notes": "Bugfixes and improvements."
},
{
"store": "apple",
"version": "0.27.0",
"released_at": null,
"notes": "Better image support."
},
{
"store": "apple",
"version": "0.27.1",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.27.2",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.27.3",
"released_at": null,
"notes": "Bugfixes."
},
{
"store": "apple",
"version": "0.28.3",
"released_at": null,
"notes": "Add the ability to add web links to cards."
},
{
"store": "apple",
"version": "0.28.4",
"released_at": null,
"notes": "Bug fixes, text defaults improvements."
},
{
"store": "apple",
"version": "0.28.6",
"released_at": null,
"notes": "Bugfixes."
}
],
"alternatives": [
{
"app_id": 1507775056,
"name": "Mochi - Flashcards and notes",
"url": "https://appcorpus.com/apps/mochi-flashcards-and-notes-1507775056",
"reason": "Same category + similar ratings"
},
{
"app_id": 1545429784,
"name": "RemNote - Notes & Flashcards",
"url": "https://appcorpus.com/apps/remnote-notes-flashcards-1545429784",
"reason": "Same category + similar ratings"
},
{
"app_id": 1219764607,
"name": "Flashcards maker - AI generate",
"url": "https://appcorpus.com/apps/flashcards-maker-ai-generate-1219764607",
"reason": "Same category + similar ratings"
},
{
"app_id": 1282001472,
"name": "Flashcards Maker",
"url": "https://appcorpus.com/apps/flashcards-maker-1282001472",
"reason": "Same category + similar ratings"
},
{
"app_id": 1554596811,
"name": "StudyPod: Flashcards app",
"url": "https://appcorpus.com/apps/studypod-flashcards-app-1554596811",
"reason": "Same category + similar ratings"
}
],
"evidence_summary": {
"index_state": "S1",
"evidence_level": 1,
"level_label": "Live store listing",
"indexable": true,
"last_verified_at": "2026-08-06",
"unknown_fields": [
"Independent summary has not been published yet."
],
"sources": [
"App Store"
]
},
"availability_markets": {
"live": [
"us"
],
"selected": "es",
"note": "No LIVE observation for ES yet."
},
"feature_events": {
"events": []
},
"features_slice": {
"plans": [
{
"code": "pro",
"label": "Feyn Pro (6 Months)",
"kind": "subscription",
"status": "store_listed",
"prices": [
{
"storefront": "us",
"formatted": "$19.99",
"billing_period": null
},
{
"storefront": "us",
"formatted": "$5.99",
"billing_period": "monthly"
},
{
"storefront": "us",
"formatted": "$29.99",
"billing_period": "yearly"
}
],
"trial": null
}
],
"features": [],
"unknown_features": [],
"data_cutoff": "6 Aug 2026"
}
}
