# Dekadans, free: Related keywords API

> Popular phrases from the top 10 competitors’ names and subtitles.

Dekadans' Free plan for the related keywords API costs $0.00 per 1,000 keywords. We check each provider's docs for 6 fields: Search volume, Monthly trend, Cost per click, Competition and 2 more. Dekadans' docs list none of the 6.
We haven't run Dekadans through [our related keywords API benchmark](https://datacircle.dev/best-related-keywords-api.txt) yet.
This plan is free. We rank 243 plans for related keywords APIs by price. Half the plans cost $0.598 or less per 1,000 keywords. [See the best free related keywords API plan.](https://datacircle.dev/best-related-keywords-api.txt)
[Keys.so's ₽34,900 (about $417) monthly plan](https://datacircle.dev/related-keywords-apis/keys-so/34900-monthly/llms.txt) is the cheapest paid plan per 1,000 keywords. Keys.so's ₽34,900 (about $417) monthly plan charges nothing per call. You get as many keywords as Keys.so's rate limit allows. [AnyAPI's pay-as-you-go plan](https://datacircle.dev/related-keywords-apis/anyapi/pay-as-you-go-pay-per-call-with-x402-and-mpp-post-v1-run-seo-related-keywords/llms.txt) costs the least for 10,000 keywords a month: $1.60.
[seodata.dev's $4.99 monthly plan](https://datacircle.dev/related-keywords-apis/seodata-dev/4-99-monthly/llms.txt) covers any number of keywords. seodata.dev's $4.99 monthly plan costs less up front than Keys.so's ₽34,900 (about $417) monthly plan.
[DataForSEO](https://datacircle.dev/related-keywords-apis/dataforseo/top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt), [Mangools](https://datacircle.dev/related-keywords-apis/mangools/15-monthly/llms.txt) and [Bing Webmaster Tools](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt) are the best related keywords API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/related-keywords-apis/dekadans/free
- [Related keywords API: the best SEO keyword data providers](https://datacircle.dev/best-related-keywords-api.txt)
- Get it: https://dekadans.net/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Request: `POST https://dekadans.net/api/research/get_competitor_keywords`
- API key: with the plan, on https://dekadans.net/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- Its API docs: https://dekadans.net/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing#research-tools
- Sold by: Dekadans (https://dekadans.net?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing)
- Checked: 2026-11-10

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 keywords: $0.00
- Per: page, size not stated
- Billing: free

## Charges

- Also pays for: POST /api/apps · Track keywords · Read tracked keywords · Read one keyword's daily history · POST /api/apps/:appId/refresh · from the same budget: get_keyword_suggestions · search_app_store · get_keyword_popularity · get_keyword_metrics · get_most_searched_keywords · get_app_details

## Overage

- Units cap: hard

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Popular phrases from the top 10 competitors’ names and subtitles.

## Data

- Keep data: no limit
- Use data: You may use Dekadans and its data for your own apps and for clients you do ASO work for. You may not: resell, sublicense, redistribute or publish data from Dekadans in bulk, or offer it as part of your own data product or API, use the service or its data to build or improve a competing product, or to train or fine-tune machine learning models, scrape the website, or access the service by automated means other than the documented API and MCP server within your plan limits, bypass or probe quotas, rate limits, authentication or security, or share accounts or keys to pool limits, overload, disrupt or reverse engineer the service, except where the law allows it, impersonate others, or use the service unlawfully or in breach of Apple's terms.

## Plan

- Pay: $0
- You get: 25 requests a month
- Enough for: 25 pages a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: term. Optional: store, platform, appStoreId
- Method: POST
- Path: /research/get_competitor_keywords

## About the plan

- Plan: Free
- Who can get it: anyone at least 16 years old

## The only field the plan's answer can hold

keyword

## Dekadans' plans (3)

- [Dekadans, free](https://datacircle.dev/related-keywords-apis/dekadans/free/llms.txt): $0.00 per 1,000, 0% complete
- [Dekadans, $6.99 monthly](https://datacircle.dev/related-keywords-apis/dekadans/6-99-monthly/llms.txt): no limit, 0% complete
- [Dekadans, $59.99 yearly](https://datacircle.dev/related-keywords-apis/dekadans/59-99-yearly/llms.txt): no limit, 0% complete

## Dekadans' calls for this API (1)

- `POST /research/get_competitor_keywords`: [Dekadans, free](https://datacircle.dev/related-keywords-apis/dekadans/free/llms.txt)

## Dekadans' APIs (3)

- [Dekadans: App Store search API pricing, 3 plans](https://datacircle.dev/app-store-search-apis/dekadans/free/llms.txt)
- [Dekadans: related keywords API pricing, 3 plans](https://datacircle.dev/related-keywords-apis/dekadans/free/llms.txt)
- [Dekadans: keyword research API pricing, 3 plans, POST /research/get_keyword_metrics](https://datacircle.dev/keyword-research-apis/dekadans/free-post-research-get-keyword-metrics/llms.txt)
- [Dekadans: keyword research API pricing, 3 plans, POST /research/get_keyword_popularity](https://datacircle.dev/keyword-research-apis/dekadans/free-post-research-get-keyword-popularity/llms.txt)

## Dekadans: related keywords API alternatives

- [DataForSEO, free, $1 trial credit, POST /v3/dataforseo_labs/google/keyword_ideas/live](https://datacircle.dev/related-keywords-apis/dataforseo/free-1-trial-credit-post-v3-dataforseo-labs-google-keyword-ideas-live/llms.txt): $0.00 per 1,000, 100% complete, 1 month
- [Bing Webmaster Tools, free](https://datacircle.dev/related-keywords-apis/bing-webmaster-tools/free/llms.txt): $0.00 per 1,000, 17% complete
- [Bukvarix, free, Without registration, POST /v1/mkeywords/](https://datacircle.dev/related-keywords-apis/bukvarix/free-without-registration-post-v1-mkeywords/llms.txt): $0.00 per 1,000, 17% complete, as of 2026-09-11
- [Mangools, free](https://datacircle.dev/related-keywords-apis/mangools/free/llms.txt): $0.00 per 1,000, 83% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

- https://dekadans.net?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://dekadans.net/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://dekadans.net/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://dekadans.net/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing
- https://dekadans.net/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=related-keywords-api-pricing