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April Flow
What April Flow is
April Flow is a sovereign AI assistant that answers questions from document Collections selected by the user. It searches only the Collections chosen for each question and includes supporting document extracts, with links to original documents and highlighted passages for review. Its website assistant also answers from selected Collection content; it does not automatically read public websites. The same Collections can be used through the app, API, website assistant, customer portal, internal applications, and workflow integrations. Java and Python SDKs plus a Python scraper CLI support document uploads, Collection queries, application connections, and workflows. Organizations can use April Flow as a managed service or deploy it inside their own infrastructure. Self-hosting is intended for control over data, infrastructure, AI processing, governance, and operating costs, including independence from external AI services. There is no free plan. Quotas can pause questions, uploads, or indexing until renewal, added capacity, or an upgrade.
Who it suits
It suits organizations that need document-grounded answers with inspectable excerpts, including enterprises, public-sector bodies, legal and compliance teams, healthcare and research environments, industrial companies, and financial organizations. Teams wanting self-hosted control can deploy it inside their own infrastructure.
What it does well
- Answers include supporting document extracts
- Original documents show highlighted passages
- Collections work across app, API, and integrations
- Managed or self-hosted deployment
- Java and Python SDKs plus scraper CLI
What to know first
- No free plan
- Public websites are not read automatically
- Quota limits can pause questions or uploads
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Team | Monthly, excluding VAT · 10 GB / 5,000 documents indexed knowledge · 10,000 indexed chunks/hour · 100,000 indexed chunks/day · 500k AI tokens/hour · 5M AI tokens/month · Standard support | €149 a month |
| Business | Monthly, excluding VAT · 50 GB / 25,000 documents indexed knowledge · 50,000 indexed chunks/hour · 500,000 indexed chunks/day · 2M AI tokens/hour · 20M AI tokens/month · Priority support | €399 a month |
| Starter | Monthly, excluding VAT · 1 GB / 500 documents indexed knowledge · 1,000 indexed chunks/hour · 10,000 indexed chunks/day · 100k AI tokens/hour · 1M AI tokens/month · Standard support | €49 a month |
| Sovereign | Contact us · Custom deployment · Custom quotas and capacity · Private or dedicated infrastructure options · Custom support model | On request |
As aprilflow.com lists them, read 9 Oct 2026. The maker's own page has the final word.
Verdict
April Flow focuses answers on selected Collections and provides evidence for review across several access channels. Its monthly plans have stated quotas, while self-hosting and Sovereign support are aimed at organizations needing greater infrastructure and governance control.
Facts from April Flow's own pages
- Access channels
- The same Collections can be used through the app, API, website assistant, customer portal, internal applications, or workflow integrations. · aprilflow.com, 9 Oct 2026
- Authentication
- The Java and Python SDKs use an April Flow user key to obtain access tokens and authenticate API calls with bearer authentication. · aprilflow.com, 9 Oct 2026
- Collections
- Users select one or more Collections before asking questions, and April Flow searches within those selected Collections. · aprilflow.com, 9 Oct 2026
- Data control
- The self-hosted option is intended for organizations seeking control over data, infrastructure, AI processing, governance, and operating costs, including independence from external AI services. · aprilflow.com, 9 Oct 2026
- Deployment
- April Flow is offered as a managed service or as an application deployed inside an organization’s own infrastructure. · aprilflow.com, 9 Oct 2026
- Evidence
- Answers include supporting document extracts, and users can open original documents and review highlighted passages. · aprilflow.com, 9 Oct 2026
- Headquarters
- Windhof, Luxembourg · aprilflow.com, 28 Sept 2026
- Intended users
- The Sovereign deployment page identifies enterprises, public sector organizations, legal and compliance teams, healthcare and research environments, industrial companies, and financial organizations as relevant audiences. · aprilflow.com, 9 Oct 2026
- Managed infrastructure
- April Flow can run on infrastructure operated by April Computers, with infrastructure operations, backup, recovery, and monitoring available for discussion. · aprilflow.com, 9 Oct 2026
- Privacy
- April Software says it does not sell personal data and describes GDPR rights and safeguards for transfers outside the European Economic Area in its privacy policy. · aprilflow.com, 9 Oct 2026
- Product
- April Flow is a sovereign AI assistant that answers questions over selected document Collections using their content as context. · aprilflow.com, 9 Oct 2026
- SDKs
- Developer documentation provides Java and Python SDKs and a Python scraper CLI for connecting applications, uploading documents, querying Collections, and building workflows. · aprilflow.com, 9 Oct 2026
- Support
- Starter and Team include standard support, Business includes priority support, and Sovereign has a custom support model. · aprilflow.com, 9 Oct 2026
- Usage limits
- If a package limit is reached, new questions, uploads, or indexing may be paused until the quota renews, capacity is added, or the package is upgraded. · aprilflow.com, 9 Oct 2026
- Website assistant limit
- April Flow does not automatically read public websites; a website assistant answers from selected Collection content. · aprilflow.com, 9 Oct 2026
Where April Flow stands on Freedom251
- AI Knowledge Base Software#21 of 36