{"app_store_id":1460038458,"slug":"caltopo-backcountry-mapping-1460038458","name":"CalTopo: Backcountry Mapping","subtitle":"Route Planning & Navigation","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/ae/40/bf/ae40bf91-98f4-e812-7e8b-f6803b0471ac/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/caltopo-backcountry-mapping/id1460038458?uo=4","price":0,"currency":"USD","rating":4.82465,"rating_count":7545,"in_app_purchases":false,"recent_rating":3.25,"recent_review_count":12,"reviews_checked_at":"2026-10-18T19:13:11.619Z","primary_genre":"Navigation","version_date":"2026-09-26T12:03:17Z","updated_at":"2026-10-20T09:18:11.532Z","stale":false,"missing_since":null,"one_liner":"Backcountry mapping app for planning and GPS navigation, with offline map and layer downloads.","verified_maker":false,"maker_site":null,"file_size_bytes":173053952,"minimum_os":"16.0","content_rating":"4+","language_count":1,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/58/ed/fa/58edfa66-ed95-7fda-8ddd-12d91f2fbef8/App_store_5.5_inch_2024_update_panel_1.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1a/90/46/1a90465d-a01b-94f2-d852-cd142cead1e0/App_store_5.5_inch_2024_update_panel_2.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/14/58/88/145888a9-9e25-aef6-a22d-c4185ee71b73/App_store_5.5_inch_2024_update_panel_3.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/23/94/23/23942321-8d3e-1da5-51e8-4a4491b01e1c/App_store_5.5_inch_2024_update_panel_4.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2a/bd/cf/2abdcf0d-6068-533d-a91e-bd3ccc124f5c/App_store_5.5_inch_2024_update_panel_5.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cb/50/0d/cb500d53-45b9-2984-196b-d18b5f1f8671/App_store_5.5_inch_2024_update_panel_6.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/13/7c/8c/137c8c09-0b52-8cde-7513-ad3953bf2e17/App_store_5.5_inch_2024_update_panel_7.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fb/fc/9e/fbfc9eca-b16b-cb45-5fec-7eb2e87f18dd/App_store_5.5_inch_2024_update_panel_8.jpg/392x696bb.jpg"],"developer_name":"CalTopo LLC","editors_choice":false,"url":"https://apptierlist.com/apps/caltopo-backcountry-mapping-1460038458/","api_url":"https://apptierlist.com/api/v1/apps/caltopo-backcountry-mapping-1460038458","schema_version":"1.0","generated_at":"2026-10-22T00:36:20.558Z","data_as_of":"2026-10-21T21:52:12.836Z","description":"New on CalTopo: the CalTopo app is now satellite ready, allowing you to use many features of the app offline with satellite data!\n\nTake the best mapping app with you wherever you go with the CalTopo app for iOS. Trusted by professional mountain guides, avalanche educators, and search and rescue teams, CalTopo has all the features you need to plan your next off-grid pursuit. Seamless integration between CalTopo online and your mobile device allows you to access and update your maps no matter where you are. Any changes you make will automatically sync across all devices, making exporting and importing your latest map a thing of the past.\n\nThe CalTopo app allows you to easily take your planning and navigation to the next level. Real time decision making in backcountry terrain is made easy with the ability to download maps and layers like slope angle shading to your device for offline use. Plan for conditions on your route with sun exposure, wind, precipitation and avalanche forecasts. View and track your location on the map using GPS, even if you are offline. Share maps with your teams or travel partners to plan collaboratively, and to ensure everyone has the necessary data. Monitor real time updates from the field, like your friends progress on a long outing with live tracking on shared maps. \n\nPlan and navigate your next adventure with the CalTopo App today!\n\nMap layers include:\n• MapBuilder Topo, Hybrid and Overlay\n• Forest Service Maps\n• Scanned Topos\n• Global Imagery\n• Shaded Relief\n• Slope Angle Shading (including high resolution elevation data where available)\n• Parcel data\n• Public Lands\n• Weekly Satellite Imagery\n• NAIP Satellite Imagery\n• Sun Exposure\n• Marine Charts\n• Weather Forecasting (including wind, precipitation, and temperatures)\n• Snow and Water Gauge Data\n• Fire History/Activity\n• And many more\n\nSupport and Feature Requests:\nEmail us at help@caltopo.com.","facts":{"developer_id":1460038457,"developer_url":"http://caltopo.com/about","first_released":"2019-10-24T07:00:00Z","support_url":"http://help.caltopo.com/","privacy_url":"http://files.caltopo.com/privacypolicy.html","website_url":"http://caltopo.com/about","app_version":"1.30.1","release_notes":"NEW LiDAR Coverage Overlay","rating_current_version":4.82465,"rating_count_current_version":7545,"star_counts":[104,39,125,540,6730],"genres":["Navigation"],"languages":["EN"],"content_advisories":null,"device_families":["iphone","ipad"],"chart":{"name":"top-free Navigation","position":141}},"freshness":{"apple_read_at":"2026-10-20T09:18:11.532Z","catalog_read_at":"2026-10-18T19:13:11.619Z","reviews_checked_at":"2026-10-18T19:13:11.619Z","summary_written_at":"2026-10-17T21:53:11.603Z","placed_at":"2026-10-16T05:04:51.811Z","scored_at":"2026-10-21T21:52:12.836Z"},"editorial":{"one_liner":"Backcountry mapping app for planning and GPS navigation, with offline map and layer downloads.","what_is":"CalTopo is a navigation app for iOS that gives access to CalTopo maps and layers on a mobile device. The listing says maps and layers such as slope angle shading can be downloaded for offline use, and that GPS location can be viewed and tracked while offline. It also lists sun exposure, wind, precipitation and avalanche forecasts, plus shared maps with live tracking for teams.","good_for":["Planning backcountry routes with offline maps","Tracking location with GPS when offline","Sharing live map updates with a team or travel partners"],"pricing":"CalTopo: Backcountry Mapping is free, with no in-app purchases on the App Store.","faq":[{"q":"Does it work without a cell signal?","a":"The listing says many features work offline once maps and layers are downloaded, and that GPS location can be viewed and tracked while offline. Satellite data is mentioned as an offline option."},{"q":"Which map layers are included?","a":"The listing includes MapBuilder Topo, Hybrid and Overlay, Forest Service Maps, Scanned Topos, Global Imagery, Shaded Relief, Slope Angle Shading, Parcel data, Public Lands, Weekly and NAIP Satellite Imagery, Sun Exposure, Marine Charts."},{"q":"How do I get support?","a":"The listing says to email help@caltopo.com for support and feature requests."}],"model":"claude-haiku-5-5","created_at":"2026-10-17T21:53:11.603Z"},"memberships":[{"list":"topographic-mapping","list_name":"topographic mapping","list_status":"draft","list_url":null,"position":null,"tier":null,"score":68.9,"components":{"rating":96.3,"votes":79.2,"rank":0,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"under_review","confidence":"provisional","judged_at":"2026-10-16T05:04:51.811Z"},{"list":"offline-navigation","list_name":"offline navigation","list_status":"active","list_url":"https://apptierlist.com/best/offline-navigation/","position":14,"tier":"B","score":82.5,"components":{"rating":96.3,"votes":79.2,"rank":54.4,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-16T05:04:51.811Z"},{"list":"maps","list_name":"maps","list_status":"active","list_url":"https://apptierlist.com/best/maps/","position":33,"tier":"C","score":68.9,"components":{"rating":96.3,"votes":79.2,"rank":0,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"provisional","judged_at":"2026-10-16T05:04:51.811Z"}],"main_list":"offline-navigation","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"history":[{"id":157993,"at":"2026-10-18T06:54:11.700Z","kind":"tier_changed","list":"offline-navigation","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":"A","to":"B","reason":"rank shift: #10, score 80.7, an app ranked above it holds this tier","job":"rescore"},{"id":125471,"at":"2026-10-16T08:57:49.459Z","kind":"tier_changed","list":"offline-navigation","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":"C","to":"A","reason":"score 68.8 to 80.8","job":"rescore"},{"id":122092,"at":"2026-10-16T05:25:51.906Z","kind":"tier_changed","list":"offline-navigation","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":null,"to":"C","reason":"score 68.8","job":"rescore"},{"id":122002,"at":"2026-10-16T05:25:51.906Z","kind":"tier_changed","list":"maps","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":null,"to":"C","reason":"score 68.8","job":"rescore"},{"id":121322,"at":"2026-10-16T05:04:51.811Z","kind":"membership_added","list":"topographic-mapping","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":null,"to":"active","reason":"It is a backcountry mapping app with MapBuilder Topo, scanned topos, Forest Service maps and slope angle shading for planning outdoor trips.","job":"shadow"},{"id":121321,"at":"2026-10-16T05:04:51.811Z","kind":"membership_added","list":"offline-navigation","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":null,"to":"active","reason":"Maps and layers can be downloaded for offline use, and GPS location is shown on the map even without a connection.","job":"shadow"},{"id":121320,"at":"2026-10-16T05:04:51.811Z","kind":"membership_added","list":"maps","app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","from":null,"to":"active","reason":"placed by the category system","job":"shadow"},{"id":117448,"at":"2026-10-16T03:04:51.806Z","kind":"app_added","list":null,"app_store_id":1460038458,"app":"caltopo-backcountry-mapping-1460038458","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 a plain average of the public components an app has (four, plus Apple's Editors' Choice badge as 100 where shown); nothing is purchasable.","lists":[{"list":"topographic-mapping","list_name":"topographic mapping","status":"active","review_status":"checked","position":null,"tier":null,"score":68.9,"components":{"rating":96.3,"votes":79.2,"rank":0,"recency":100},"ranks":[],"verdicts":[{"verdict":"keep","reason":"It is a backcountry mapping app with MapBuilder Topo, scanned topos, Forest Service maps and slope angle shading for planning outdoor trips.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T05:04:51.811Z","attempts":1,"current":true},{"verdict":"keep","reason":"It is a backcountry topo mapping tool with slope angle shading and terrain layers for outdoor trip planning.","verifier":"list check","decided_at":"2026-10-16T05:04:51.811Z","attempts":1,"current":true}]},{"list":"offline-navigation","list_name":"offline navigation","status":"active","review_status":"checked","position":14,"tier":"B","score":82.5,"components":{"rating":96.3,"votes":79.2,"rank":54.4,"recency":100},"ranks":[{"country":"us","rank":41},{"country":"ca","rank":29},{"country":"de","rank":41}],"verdicts":[{"verdict":"keep","reason":"Maps and layers can be downloaded for offline use, and GPS location is shown on the map even without a connection.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T05:04:51.811Z","attempts":1,"current":true},{"verdict":"keep","reason":"It downloads maps for offline use and tracks your GPS location without a connection, which is core offline navigation.","verifier":"list check","decided_at":"2026-10-16T05:04:51.811Z","attempts":1,"current":true}]},{"list":"maps","list_name":"maps","status":"active","review_status":"checked","position":33,"tier":"C","score":68.9,"components":{"rating":96.3,"votes":79.2,"rank":0,"recency":100},"ranks":[],"verdicts":[{"verdict":"keep","reason":"CalTopo is a full interactive mapping app for viewing and exploring terrain maps, so it fits as a map app alternative.","verifier":"list check","decided_at":"2026-10-16T05:04:51.811Z","attempts":1,"current":true}]}]},"data_version":40415,"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/caltopo-backcountry-mapping-1460038458/"}}