Overview

Hemrock Portfolio is an open-source platform for venture funds, offered under the Apache License 2.0 for personal or commercial deployment. The product is designed to run on a customer’s own infrastructure, database and AI keys; Hemrock says portfolio data is not shared with other funds or used to train models. That approach gives managers control over their operating environment, but self-hosting also makes infrastructure a responsibility rather than an included service.

Portfolio converts founder updates into structured metrics, dashboards and LP reporting. Teams can forward PDFs, Excel files, PowerPoint presentations or plain text, after which AI extracts metrics and flags uncertain results for review. This can cut down on manual consolidation, but flagged figures still need human attention.

Key features

Monitoring and reporting: Charts track MRR, burn, headcount and custom KPIs over time. The platform can also draft quarterly LP letters and investor report cards, giving lean teams a path from company updates to investor-facing summaries.
Fund accounting: Optional Fund Operations adds a double-entry ledger for funds, SPVs, direct deals or GP entities, plus period closing and a compliance calendar. This extends the product beyond portfolio tracking for managers who want accounting functions in the same offering.
AI and data access: Users can connect their own keys for Anthropic, OpenAI, Google Gemini or OpenRouter, or use local models through Ollama. A fund API and MCP server expose portfolio data and tools to scripts and AI clients, with access limited by the key or user’s permissions.
Integrations: A prebuilt, one-way Affinity integration brings deal and relationship data into portfolio and diligence views. It is useful for importing that information, but its one-way direction does not provide a two-way sync; webhooks are coming soon.
Ownership modeling: Share class tracking, option management, dilution scenarios and fundraising modeling support cap-table and financing workflows alongside portfolio oversight. Multiple export formats add flexibility when taking data elsewhere.

Pricing

The self-hosted plan costs 0.00 USD per free, with all funds, SPVs and team members and no per-seat fees. The trade-off is that it runs on the customer’s infrastructure, with estimated running costs of roughly $0 to $75 a month. It is the natural starting point for teams willing to manage deployment and operations themselves.

Hosted costs 250.00 USD per month, billed from $250/mo, and can be canceled anytime. Hosting and maintenance, onboarding and ongoing support are included, along with early access. It suits firms that want Hemrock to handle the operating environment, though the recurring fee replaces the free software price.

Setup and support costs 2500.00 USD per once, billed from $2,500 as a one-time charge. It covers deployment on the customer’s infrastructure, setup, onboarding and data migration; ongoing support is available. This is aimed at teams that want a tailored deployment without choosing the hosted plan. Hemrock also offers email, phone and WhatsApp help with understanding and using its models, Monday to Friday, 9 AM to 4 PM EST.

Platforms

Hemrock supports web, API and self-hosted deployments. The self-hosted option is the clearest match for managers who want to operate the product on their own infrastructure; hosted service is also available for a monthly fee.

Who it's for

Hemrock describes Portfolio for SPVs, solo GPs and emerging managers, angels and syndicates, and micro and seed funds. Its free, open-source option and no per-seat fees make it particularly relevant to lean teams, while optional accounting and structured reporting broaden its use for managers handling multiple vehicles. Firms that do not want to manage infrastructure should weigh the hosted price or consider another platform.

Pros and cons

Pros: Free Apache-licensed software can be modified and deployed commercially; the self-hosted plan includes all funds, SPVs and team members without per-seat fees; customer-controlled infrastructure and AI keys, plus local-model support, suit teams prioritizing data control.
Cons: Self-hosting carries estimated running costs and operational responsibility; hosted service starts at $250 per month; AI extraction flags uncertain results for review rather than removing the need to check them; the Affinity integration is one-way.

Alternatives

Keel is worth considering for a fund that wants a free web and API option: its free plan covers one entity and 10 active investors, with no credit card or time limit. For more fund-administration choices, browse Fund Administration Software.

Formidium is another paid option, with Android, iOS, MacOS, Windows, web and API platforms. ModelTree is a paid web and Windows option with a free trial. Perfona offers a paid API and web option with a free trial and a Portfolio Technology plan priced at 1000500.00 USD per month after two weeks.

Archstone may suit a manager looking for a paid web plan with stated team and portfolio limits: Starter costs 297.00 USD per month and covers up to 25 LPs, 20 portfolio companies and two team seats. For a compliance-focused alternative, Ashta.ai offers a Compliance Desk plan at 29.00 USD per once, per client, with no subscription and the first 10 verifications free.

Allvue Investment Management offers custom pricing for its web-based portfolio management product. Juniper Square is another paid option, available on Android, iOS, web and API.

For cap-table-focused choices, see Cap Table Management Software.

Verdict

Hemrock is a strong fit for lean venture managers who want portfolio monitoring and LP reporting under their control, with optional fund accounting and no per-seat fee on self-hosted deployments. Choose it when open-source flexibility and data control outweigh the work of running your own environment; look elsewhere if you need a fully managed service without a recurring hosting charge or want a two-way Affinity sync.

	Ark	Hemrock
Free plan	No	Yes
Free trial	No	No
Paid from	—	$250/mo
Open source	No	No
Platforms	api, Web	api, self-hosted, Web
Investor portal	Yes	—
Capital account tracking	Yes	—
Allocation waterfalls	Yes	—
Capital call workflows	Yes	—
Free plan	—	Yes

Ark vs Hemrock

Ark

Hemrock