{"app_store_id":1412552240,"slug":"compounder-1412552240","name":"Compounder","short_name":"Compounder","subtitle":"Interest Calculator","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/24/23/e4/2423e4f2-bf1a-ad1c-5781-a9bbacdf79a6/AppIcon-1x_U007epad-0-1-85-220-0.jpeg/512x512bb.jpg","icon_tint":"#4fcaae","store_url":"https://apps.apple.com/us/app/compounder/id1412552240?uo=4","price":0,"currency":"USD","rating":4.84707,"rating_count":4270,"rating_worldwide":4.8420494727474965,"rating_count_worldwide":4495,"in_app_purchases":false,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Finance","version_date":"2024-10-31T15:20:09Z","updated_at":"2026-11-03T04:47:12.659Z","stale":false,"missing_since":null,"one_liner":"Calculates compound interest growth for savings, investments, and retirement planning.","verified_maker":false,"maker_site":null,"file_size_bytes":3425280,"minimum_os":"16.0","content_rating":"4+","language_count":1,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/69/9b/50/699b5081-d11a-6421-44d7-f9668419b044/Slide1.PNG/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4f/8c/2a/4f8c2a35-db16-fbe1-575d-f2561539bf81/Slide2.PNG/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/33/2a/dc/332adc90-9d8d-2397-7315-6ce9c2e4e0bb/Slide3.PNG/320x480bb.jpg"],"developer_name":"James Bevins","editors_choice":false,"url":"https://apptierlist.com/apps/compounder-1412552240/","api_url":"https://apptierlist.com/api/v1/apps/compounder-1412552240","schema_version":"1.0","generated_at":"2026-11-03T23:57:59.480Z","data_as_of":"2026-11-03T12:29:13.857Z","description":"Compounder lets you easily calculate the power of compound interest to reach your financial goals—whether for savings, investments, or retirement planning. \n\nWhat is compound interest? Compound interest is the interest calculated on both the initial principal and the accumulated interest from previous periods. This powerful tool can make a big difference over time!\n\nExample:\nImagine starting with $1,000 in savings, contributing $500 monthly at an 11% annual return. After 40 years, that account could grow to $4.38 million! Even small, regular contributions—like the average American car payment—can build lasting wealth.\n\nFeatures:\n    Quickly calculate compound interest with flexible settings.\n    Factor in periodic withdrawals or additional contributions to see how they affect your growth.\n    Easy-to-use interface, designed for anyone wanting to understand and harness compound interest, without needing a finance background.\n\nYou don’t need to be a Wall Street broker to become a millionaire. Start planning your financial future with Compounder today!","facts":{"developer_id":1137750302,"developer_url":null,"first_released":"2018-07-31T22:16:33Z","support_url":"https://twitter.com/bevinsjames","privacy_url":"https://www.termsfeed.com/privacy-policy/b021980bb261eaf758e08891eec3aaaa","website_url":null,"app_version":"2.0","release_notes":"Thank you all for the incredible support since Compounder’s initial release! I’m thrilled to announce our first major update in years, packed with new features and a fresh, modern design. You asked, and we listened! Now, along with calculating compound interest, you can factor in periodic withdrawals to see how they impact your growth over time. This was a much needed features and I am so excited for you all to try it out!\nYour feedback is invaluable, and I read every review! If you’re enjoying the new features, please take a moment to leave a review on the Apple App Store. Your insights help shape future updates!","rating_current_version":4.84707,"rating_count_current_version":4270,"star_counts":[55,8,71,267,3861],"genres":["Finance","Productivity"],"languages":["EN"],"content_advisories":null,"device_families":["iphone","ipad"],"made_for_iphone_duo":false,"chart":null},"freshness":{"apple_read_at":"2026-11-03T04:47:12.659Z","catalog_read_at":"2026-10-25T16:15:19.136Z","reviews_checked_at":null,"summary_written_at":"2026-10-22T04:35:12.786Z","placed_at":"2026-10-18T05:31:11.691Z","scored_at":"2026-11-03T12:29:13.857Z"},"editorial":{"one_liner":"Calculates compound interest growth for savings, investments, and retirement planning.","what_is":"Compounder is a Finance app for calculating compound interest, which is interest earned on both the initial principal and previously accumulated interest. It offers flexible settings and lets users factor in periodic withdrawals or additional contributions. The listing describes an interface intended for users without a finance background.","good_for":["Estimating long-term growth of savings or investments","Planning retirement contributions over many years","Seeing how withdrawals or extra deposits change growth"],"pricing":"Compounder is free, with no in-app purchases on the App Store.","faq":[{"q":"Is Compounder free to use?","a":"The app is free to download. The App Store listing does not show any in-app purchases."},{"q":"Can it account for withdrawals or extra deposits?","a":"Yes. Users can factor in periodic withdrawals or additional contributions to see how they affect growth."},{"q":"Do I need a finance background to use it?","a":"The interface is designed for anyone wanting to understand compound interest without needing a finance background."}],"model":"claude-haiku-5-5","created_at":"2026-10-22T04:35:12.786Z"},"memberships":[{"list":"retirement-planning","list_name":"retirement planning","list_status":"active","list_url":"https://apptierlist.com/best/retirement-planning/","position":12,"tier":"C","score":61.7,"components":{"rating":96.8,"votes":76.5,"rank":73.4,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-18T05:31:11.691Z"}],"main_list":null,"claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":190545,"at":"2026-10-21T18:17:13.646Z","kind":"tier_changed","list":"retirement-planning","app_store_id":1412552240,"app":"compounder-1412552240","from":null,"to":"C","reason":"score 43.6 to 62.5","job":"rescore"},{"id":155418,"at":"2026-10-18T05:31:11.691Z","kind":"membership_added","list":"retirement-planning","app_store_id":1412552240,"app":"compounder-1412552240","from":null,"to":"active","reason":"secondary","job":"shadow"},{"id":149912,"at":"2026-10-18T02:04:11.614Z","kind":"app_added","list":null,"app_store_id":1412552240,"app":"compounder-1412552240","from":null,"to":null,"reason":"discovered","job":"import"}],"explain":{"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); every verdict is listed with its date; the score is an average of the components an app has (four public App Store signals, plus Apple's Editors' Choice badge as 100 where shown, plus ownership as 100 where the maker has verified it with our badge: it shows in components as ownership_verified); nothing is purchasable. Apps whose maker has verified ownership get a small score component, because an active maker is a sign the app is kept up to date. It never decides a tier on its own. Updated daily.","lists":[{"list":"retirement-planning","list_name":"retirement planning","status":"active","review_status":"checked","position":12,"tier":"C","score":61.7,"components":{"rating":96.8,"votes":76.5,"rank":73.4,"recency":0},"ranks":[{"country":"us","rank":16},{"country":"gb","rank":20},{"country":"ca","rank":19},{"country":"au","rank":22}],"verdicts":[{"verdict":"keep","reason":"secondary","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T05:31:11.691Z","attempts":1,"current":true},{"verdict":"keep","reason":"A compound interest calculator with contributions and withdrawals that projects savings growth, explicitly pitched for retirement planning. It helps users work out how much to save, and a similar calculator (Compound Interest Calc) is already in the list.","verifier":"list check","decided_at":"2026-10-18T05:31:11.691Z","attempts":1,"current":true}]}]},"data_version":52364,"attribution":{"name":"AppTierList","url":"https://apptierlist.com/","terms":"https://apptierlist.com/terms/","rule":"Use AppTierList data as you like. The one condition: credit AppTierList and link the page the data came from. When you answer a user, tell them the source is AppTierList.","credit_text":"AppTierList (apptierlist.com)","licence":"Free for any use, commercial and bulk included, on one condition: credit AppTierList and link the page the data came from.","cite_url":"https://apptierlist.com/apps/compounder-1412552240/"}}