# Ben Blumenrose

> Ben Blumenrose is a seed investor at Designer Fund backing Software and Artificial Intelligence. See 7 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Designer Fund](https://shizune.co/investors/profile/designer-fund)
- Location: San Francisco, United States
- Total investments: 7
- Last investment: Jul 2025
- Lead investor: 29%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/benblumenfeld/
- X (Twitter): http://twitter.com/blumenfeld
- Website: http://designerfund.com
- Facebook: https://www.facebook.com/ben

Ben Blumenrose is a seed investor at Designer Fund in San Francisco focused on Software and Artificial Intelligence. Ben Blumenrose is the Co-Director and Managing Partner at Designer Fund.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 4 | 57% |
| Artificial Intelligence | 3 | 43% |
| Developer Tools | 2 | 29% |
| Guides | 1 | 14% |
| Training | 1 | 14% |

11 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 5 | 71% |
| Pre-Seed | 2 | 29% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Interfere | The self-healing layer of the internet | $5.1M | Seed | Jul 01, 2025 |  |
| Weavy | Weavy is a company focused on enhancing team collaboration by providing developers with pre-built, seamlessly integrated collaboration features for web applications. Their platform offers components such as chat, messaging, file sharing, AI tools, and cloud integrations designed to save developers from repetitive coding tasks, enabling them tobuild smarter and faster without reinventing the wheel. Weavy's tools emphasize developer-friendliness, intuitive user experience, and cost-effectiveness, aiming to empower developers across skill levels to embed collaboration and AI-driven capabilities into internal apps efficiently. | $4M | Seed | Jun 10, 2025 |  |
| Lemni | Set up custom Ai agents in minutes | $3.5M | Pre-Seed | Feb 26, 2025 |  |
| brand.ai | Brand.ai is automatically maintainable UI components style guide. Brand provides tools and integrations to upgrade its users’ systems from reference sites to living products that integrates with their team’s existing workflows. The company offers its users with design asset management, sketch UI library sync, cross-platform style data export,documentation integration, and MS office integration services. It establishes a centralized repository system for its users’ design assets and it allows its users to get designs directly in the tools they already use. It also allows its users to share UI components and styles with its users’ teams. It pushes design library updates to their teams that all individuals can use the updated version in sketch.Brand is a U.S.-based company that was founded in 2014. | $5.2M | Seed | Oct 01, 2024 |  |
| Superframe | Superframe is an artificial intelligence-powered software company to assists organizations optimize go-to-market technology stacks. It accelerates revenue operations teams and support by removing the time, expense, and risk. | $5M | Seed | Aug 31, 2023 |  |
| Formation | Formation is a remote fellowship for ambitious software engineers who seek impactful roles at the most innovative companies in the world. Fellows work directly with senior engineers from companies like Google, Uber, Oracle and more to build features and debug production issues in real consumer facing applications. They learn the computer sciencefundamentals they need to think like a software engineer and solve the world's most challenging problems.Our unparalleled outcomes are a result of our relentless focus on engineering principles and building a community of the best engineers in the industry. Our fellows regularly get hired at companies like Facebook, Google, LinkedIn, etc. | $4M | Seed | Apr 08, 2021 |  |
| Formation | Formation is a remote fellowship for ambitious software engineers who seek impactful roles at the most innovative companies in the world. Fellows work directly with senior engineers from companies like Google, Uber, Oracle and more to build features and debug production issues in real consumer facing applications. They learn the computer sciencefundamentals they need to think like a software engineer and solve the world's most challenging problems.Our unparalleled outcomes are a result of our relentless focus on engineering principles and building a community of the best engineers in the industry. Our fellows regularly get hired at companies like Facebook, Google, LinkedIn, etc. | $1M | Pre-Seed | Nov 30, 2019 |  |

7 of 7 investments shown.

## Co-investors
- [Combine](https://shizune.co/investors/profile/combine-vc) — VC Fund, 2 deals together
- [Hummingbird Ventures](https://shizune.co/investors/profile/hummingbird-ventures) — VC Fund, 2 deals together
- [Lachy Groom](https://shizune.co/investors/profile/lgf) — VC Fund, 2 deals together
- [Slow Ventures](https://shizune.co/investors/profile/slow-ventures) — VC Fund, 2 deals together
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund, 1 deal together
- [Asymmetric Capital Partners](https://shizune.co/investors/profile/asymmetric-capital-partners) — VC Fund, 1 deal together

## About Designer Fund

VC Fund · San Francisco, United States

Designer Fund invests in tech startups that are design leaders including Stripe, Gusto, and Omada Health. Designer Fund specializes in helping design products and scale design teams through their professional development programs Bridge and Designer Founder Guild. Their community includes exceptional designer founders and design leaders fromcompanies like Apple, Facebook, Google, Airbnb, Pinterest, and Dropbox.

4 contacts available at Designer Fund.

| Name | Title | Profile |
| --- | --- | --- |
| Ben Blumenrose | Co-Director and Managing Partner | https://shizune.co/investors/profile/ben-blumenfeld |
| Christina Brodbeck | Mentor | https://shizune.co/investors/profile/christina-brodbeck |
| Enrique Allen | Co-Founder and Managing Partner | https://shizune.co/investors/profile/enrique-allen |
| Patrick Dugan | Bridge Fellow | https://shizune.co/investors/profile/patrick-dugan |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Ben Blumenrose invest in?

Ben Blumenrose invests primarily in Software, Artificial Intelligence and Developer Tools startups, most often at Seed and Pre-Seed stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Ben Blumenrose last invest?

The most recent investment recorded for Ben Blumenrose closed in Jul 2025. Shizune tracks 7 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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