AppCorpus MCP gives your agent current app data, prices, screens, features and sources.
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GET /api/v3/apps/1420917155
{
"app_id": 1420917155,
"canonical_url": "https://appcorpus.com/apps/violin-tuner-basic-1420917155",
"identity": {
"name": "Violin Tuner Basic",
"slug": "violin-tuner-basic",
"developer": {
"name": "Pedro Daniel Macalupu Cumpen",
"url": "https://appcorpus.com/developers/pedro-daniel-macalupu-cumpen-developer_3d5641dd54cf8c73b0727710a1b8873e"
},
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"stores": [
"apple"
],
"platforms": [
"iphone",
"ipad"
],
"status": {
"state": "active",
"label": "Active",
"last_checked": "2026-08-07",
"last_checked_label": "7 Aug 2026",
"banner": null,
"region_note": null
}
},
"listings": [
{
"store": "apple",
"status": "ACTIVE",
"url": "https://apps.apple.com/us/app/violin-tuner-basic/id1420917155?uo=4",
"rating": 4.4,
"rating_count": 460,
"formatted_price": "Free",
"is_free": true,
"has_iap": true,
"has_subscription": false,
"version": "4.2.5",
"updated": "2026-04-29",
"currency": "USD"
}
],
"summary": {
"one_liner": null,
"summary": null,
"best_for": [],
"not_for": [],
"status": "fallback",
"at_a_glance": [
"Free to download",
"In-app purchases"
]
},
"categories": {
"official": [
"Music",
"Utilities"
],
"appcorpus": [
{
"category_id": "music",
"label": "Music",
"url": "https://appcorpus.com/categories/music"
},
{
"category_id": "utilities",
"label": "Utilities",
"url": "https://appcorpus.com/categories/utilities"
}
]
},
"use_cases": [],
"features": [
{
"capability_id": "family_sharing",
"label": "Family Sharing",
"availability": "yes",
"access_level": "unknown",
"scope": "App Store",
"evidence": "Store published"
},
{
"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": "us",
"last_verified": "2026-08-07",
"rows": [
"A4 Calibrations 392Hz to 466Hz — $3.99",
"Metronome — $3.99",
"Remove ads — $2.99",
"Settings — $3.99",
"Tuning Fork — $3.99"
]
}
],
"screens": [
{
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"alt": "Violin Tuner Basic ipad screenshot 1"
},
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},
{
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},
{
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},
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},
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"store": "apple",
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},
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},
{
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},
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"alt": "Violin Tuner Basic iphone screenshot 21"
},
{
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"alt": "Violin Tuner Basic iphone screenshot 22"
},
{
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"store": "apple",
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},
{
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"store": "apple",
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},
{
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"store": "apple",
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},
{
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"store": "apple",
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},
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}
],
"ratings": [
{
"store": "apple",
"average": 4.4,
"count": 460,
"market": "us",
"observed_at": "2026-08-07",
"reviews": [
{
"rating": 1,
"title": "Worst violin tuner",
"body": "Makes you pay for too much stuff and it’s a horrible violin tuner",
"author": "ZoexxAux",
"date": "7 Aug 2026"
},
{
"rating": 5,
"title": "Easy to learn and tune",
"body": "Bro, this is awesome. I can literally tune this without any problems and it’s so easy to learn. I learned it on the first day without instructions.",
"author": "Cool kids taking over",
"date": "7 Aug 2026"
},
{
"rating": 1,
"title": "Frustrated",
"body": "Same as other reviews. Does not tune and keeps asking to make other purchases but nothing activates. Total scam. Shameless",
"author": "Choche4075",
"date": "7 Aug 2026"
},
{
"rating": 1,
"title": "Worthless",
"body": "Doesn't tune and keeps asking to pay $1.99. Why would I pay more if your preview is garbage? Remove this app from the store, it's a blatant cash grab. I doubt the paid app even works.",
"author": "whocaresone",
"date": "7 Aug 2026"
},
{
"rating": 1,
"title": "It deserves a negative -10:stars",
"body": "What is going on? I paid for this app and when I try to open it keep asking to pay again Do not buy it. Garbage.",
"author": "Bahiabrasil",
"date": "7 Aug 2026"
}
]
}
],
"privacy": [
{
"store": "apple",
"declarations": [
{
"title": "Data Linked to You",
"detail": "Analytics — Identifiers — Device ID",
"source": "Developer declared"
},
{
"title": "Data Linked to You",
"detail": "Third-Party Advertising — Identifiers — Device ID",
"source": "Developer declared"
},
{
"title": "Data Linked to You",
"detail": "Identifiers",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Diagnostics — Crash Data",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Analytics — Diagnostics — Performance 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": "Third-Party Advertising — Location — Coarse Location",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Diagnostics",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Location",
"source": "Developer declared"
},
{
"title": "Data Not Linked to You",
"detail": "Usage Data",
"source": "Developer declared"
},
{
"title": "Data Used to Track You",
"detail": "Identifiers — Device ID",
"source": "Developer declared"
},
{
"title": "Data Used to Track You",
"detail": "Identifiers",
"source": "Developer declared"
},
{
"title": "Data Used to Track You",
"detail": "Location — Coarse Location",
"source": "Developer declared"
},
{
"title": "Data Used to Track You",
"detail": "Location",
"source": "Developer declared"
}
],
"accessibility": []
}
],
"changes": [
{
"store": "apple",
"version": "3.8",
"released_at": null,
"notes": "· Optimization for the iPhone 14 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9",
"released_at": null,
"notes": "· Optimization for the iPhone 15 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.1",
"released_at": null,
"notes": "· Optimization for the iPhone 15 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.2",
"released_at": null,
"notes": "· Optimization for the iPhone 15 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.3",
"released_at": null,
"notes": "· Optimization for the iPhone 15 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.4",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.5",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.6",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.7",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.8",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "3.9.9",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements"
},
{
"store": "apple",
"version": "4.1",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.1",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.2",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.3",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.4",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.5",
"released_at": null,
"notes": "· Optimization for the iPhone 16 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.6",
"released_at": null,
"notes": "· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.1.7",
"released_at": null,
"notes": "· Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads. · A4 Calibration, Tuning fork and Settings (as In-App Purchases). · Performance improvements and bug fixes"
},
{
"store": "apple",
"version": "4.2",
"released_at": null,
"notes": "· Metronome and Tuning Fork features are free for a limited time — enjoy them! · Optimization for the iPhone 17 Pro Max, iPad Mini and latest iPads. · A4 Calibration and Settings (as In-App Purchases). · Performance improvements and bug fixes."
}
],
"alternatives": [
{
"app_id": 409786458,
"name": "n-Track Tuner",
"url": "https://appcorpus.com/apps/n-track-tuner-409786458",
"reason": "Same category + similar ratings"
},
{
"app_id": 918055824,
"name": "Tuner & Metronome -Soundcorset",
"url": "https://appcorpus.com/apps/tuner-metronome-soundcorset-918055824",
"reason": "Same category + similar ratings"
},
{
"app_id": 662890455,
"name": "Guitar Tuner - Ukulele & Bass",
"url": "https://appcorpus.com/apps/guitar-tuner-ukulele-bass-662890455",
"reason": "Same category + similar ratings"
},
{
"app_id": 1457541750,
"name": "Pitched Tuner - Tuning App",
"url": "https://appcorpus.com/apps/pitched-tuner-tuning-app-1457541750",
"reason": "Same category + similar ratings"
},
{
"app_id": 635828559,
"name": "Tuner Lite by Piascore",
"url": "https://appcorpus.com/apps/tuner-lite-by-piascore-635828559",
"reason": "Same category + similar ratings"
}
],
"evidence_summary": {
"index_state": "S1",
"evidence_level": 1,
"level_label": "Live store listing",
"indexable": true,
"last_verified_at": "2026-08-07",
"unknown_fields": [
"Independent summary has not been published yet."
],
"sources": [
"App Store"
]
},
"availability_markets": {
"live": [
"us"
],
"selected": "us",
"note": null
},
"feature_events": {
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},
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{
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{
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}
],
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},
{
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"kind": "unknown",
"status": "store_listed",
"prices": [
{
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"formatted": "$3.99",
"billing_period": null
}
],
"trial": null
},
{
"code": "remove-ads",
"label": "Remove ads",
"kind": "unknown",
"status": "store_listed",
"prices": [
{
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"formatted": "$2.99",
"billing_period": null
}
],
"trial": null
},
{
"code": "settings",
"label": "Settings",
"kind": "unknown",
"status": "store_listed",
"prices": [
{
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"formatted": "$3.99",
"billing_period": null
}
],
"trial": null
},
{
"code": "tuning-fork",
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"kind": "unknown",
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"formatted": "$3.99",
"billing_period": null
}
],
"trial": null
}
],
"features": [],
"unknown_features": [
"family_sharing"
],
"data_cutoff": "7 Aug 2026"
}
}
