App Store Top Free rank_change climbers via get_top_trends

App Store Top Free rank_change on Trends MCP is get_top_trends with type App Store Top Free, sort rank_change, and a window such as 1d. From the August 27, 2026 pull, the 1d window stamped 2026-08-27T00:01:30 UTC against baseline 2026-08-26T00:01:34 UTC and returned count 45. The top climber was Capital One Shopping: Save Now at rank 40, prev_rank 81, rank_change 41. Default sort rank on the same stamp closed at 100 titles, with ChatGPT at rank 1. Google Play 1d on the same stamp returned count 1. Free tier access is 100 requests per month.

App Store 1d returned 45 climbers while Google Play returned 1

From the Trends MCP scan of August 27, 2026, App Store Top Free sort rank_change stamped 2026-08-27T00:01:30 UTC and filled 45 climber rows on window 1d against baseline 2026-08-26T00:01:34 UTC, while Google Play 1d on the same stamp returned count 1, so a store-chart climber pull is not interchangeable across iOS and Android boards.

ChatGPT at default rank 1 was not on the 1d climber list. It appeared on 3d, 14d, and 30d with rank_change 2, 2, and 1. Default sort rank filled 50 titles at offset 0 and 50 at offset 50, then count 0 at offset 100. Google Docs sat at App Store rank 67 and at Google Trends rank 29 on the same stamp. The App Store Top Free API page still describes a 25-row scan from August 3, 2026. This pull closed at 100.

Exact API calls for climber boards

sort rank_change plus window is a separate get_top_trends request from default sort rank, so a 1d climber pull and a current-rank pull on August 27, 2026 are two requests, and each extra window is another request because window is part of the billed page.

{"mode": "get_top_trends", "type": "App Store Top Free", "sort": "rank_change", "window": "1d", "limit": 50, "offset": 0}
{"mode": "get_top_trends", "type": "App Store Top Free", "limit": 50, "offset": 0}

MCP clients send the same fields on get_top_trends. Window values are 1d, 3d, 7d, 14d, and 30d. Default sort is rank. Default window when sort is rank_change is 30d, so omit window only when that 30d lookback is the intent. Offset 50 on the 1d climber list returned count 0 plus a held-or-fell note even though page 1 had 45 climbers. Read count before treating that note as a board-wide hold. Offset and limit behavior is on get_top_trends pagination. Sibling window math for Google Trends is on the Google Trends rank_change API.

ASO keyword trackers watch a chosen app inside search results. This call diffs the public Top Free chart snapshot. Those products are not substitutes. Check current pricing on any ASO vendor before quoting a fee.

Window length changes who counts as a climber

A longer rank_change window on App Store Top Free can return fewer rows, not more, because only titles still on the current 100-row board that also sat on the older snapshot can climb, and the top climber identity flips by window on this stamp.

1d and 3d used the 00:01 clock. 7d, 14d, and 30d used the 02:01 cluster. Microsoft Authenticator jumped from 92 to 5 on 3d, then sat at rank_change 1 on 7d. ParentSquare led 30d at +47 and also sat at +78 on 3d (rank 11, prev_rank 89). Capital One Shopping led 1d, placed sixth on 3d at +40, and placed second on 14d at +57. Read each window as its own snapshot pair. Do not stack them into a single mover score.

Same 1d sort on other live feeds

sort rank_change with window 1d is valid on other daily feeds from the same Trends MCP account, and fill rates on this August 27, 2026 stamp ranged from 45 climbers on App Store Top Free down to 1 on Google Play, so copy-pasting an iOS climber count onto Android or search boards is a miss.

App Store 1d used a 00:01 baseline. The other feeds in this table used 02:01. Google Play's single climber was YouTube Music at rank 150, prev_rank 151. Wikipedia ChatGPT climbed 1 rank from 23 to 22. YouTube titles on this stamp included punctuation that does not belong in ASCII copy; the table uses a shortened Gamescom trailer label. TikTok 1d filled 25 at limit 25, so the true climber count may be higher. Paginate before treating 25 as a closed list. See the App Store Top Free vs Google Trends page for default-rank joins on an earlier stamp.

google search follow-ups on climber names

get_growth on google search turns a live App Store climber into a dated 0-100 index, and those indexes on this stamp did not move with rank_change: Capital One Shopping climbed 41 chart ranks while google search sat at 69.0, down 6.76% over 7 days from 74.0.

Shared google search recent_date 2026-08-22 unless noted:

Android downloads for com.openai.chatgpt used recent_date 2026-08-26. The 30D baseline_volume was 0.0, which makes the percent field unusable; quote the two volumes instead. Vinted at App Store rank 3 sat near 99.0 search interest and still missed Google Trends 200. Chart rank, search index, and Android volume are three series. Join them in code. Do not infer a search spike from a 1d chart climb.

Limits of sort rank_change on App Store Top Free

rank_change only lists titles that remain on the current 100-row board and that also existed on the chosen baseline, so new entries with no prev_rank never appear as climbers, and a 00:01 App Store baseline should not be mixed with a 02:01 Google Trends baseline without stating both timestamps.

Default sort rank closed at 100 on this stamp. 1d climbers closed at 45; offset 50 returned count 0. Each window is a request. Google Play 1d returned a 1-rank shuffle while App Store 1d returned 45 rows. YouTube climber titles can include punctuation that fails an ASCII check; paraphrase before publishing. There is no iOS download series on get_growth. Android follow-ups need a bundle ID such as com.openai.chatgpt, not the App Store display name. The free plan is 100 requests per month. Starter is $19 for 1,000, Pro is $49 for 5,000, and Business is $199 for 25,000.