# rule30

> rule30 is a VC fund backing Medical, Software and Health Care. See 18 investments, check sizes, portfolio. Updated Aug 2026.

- Type: VC Fund
- Total investments: 18
- Last investment: Jul 2026
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/rule30/about/
- Website: https://rule30.vc/

rule30 is a VC fund focused on Medical and Software. rule30 operates as a venture capital fund.

## Round sizes

| Stage | Round size |
| --- | --- |
| Pre-Seed | $732k–$3M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 1 | 6% |
| Software | 1 | 6% |
| Health Care | 1 | 6% |
| Biotechnology | 1 | 6% |
| Pharmaceutical | 1 | 6% |

6 industries tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Germany | 1 | 6% |
| United Kingdom | 1 | 6% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Gyre Energy | Gyre Energy cuts costs for cooling intensive operators. Cooling is 20% of global energy demand, accounting for up to 40% of electricity costs for data center operators, and up to 90% of electricity costs for cold storage operators. Gyre's platform technology leverages advanced AI and low-cost thermal storage to reduce energy use and enablelarge-scale distributed flexibility for cooling assets. | $1.3M | Pre-Seed | Jul 07, 2026 |  |
| Ralio |  | $2.5M | Pre-Seed | Apr 14, 2026 |  |
| Helix.ID | Helix.ID provides a privacy-first digital identity layer for verifying real users and interactions. | $2M | Pre-Seed | Apr 01, 2026 |  |
| Lemrock | Lemrock develops conversational platform designed to make websites more interactive and improve user engagement and revenue. | $6.9M | Pre-Seed | Mar 11, 2026 |  |
| Materi | Materi provides a digital platform for creating, organizing, and sharing educational content. The system enables users to build structured learning materials, manage resources, and distribute content across courses or training programs. It includes tools for collaboration, allowing contributors to develop and update materials within a sharedenvironment. | $1.5M | Pre-Seed | Feb 12, 2026 |  |
| Sylvan | Sylvan provides laboratory testing and analytical services that support product development and quality assessment. The company conducts material analysis, chemical testing, and performance evaluation across various sample types. It offers services that include formulation testing, stability analysis, and compliance-related assessments forindustrial and commercial products. The organization also supports data reporting and interpretation to assist clients in understanding test results. Its work is used in product validation, research processes, and quality control workflows across different industries. | $2M | Pre-Seed | Feb 11, 2026 |  |
| Clera Labs | Clera is an AI talent agent that matches candidates with startup roles based on their goals, skills, and preferences. It provides personalized introductions, curated job opportunities, and guidance throughout the application and interview process. | $3M | Pre-Seed | Feb 01, 2026 |  |
| Sourcerer | Sourcerer is the autonomous AI procurement agent focused on logistics, and trade finance through artificial intelligence. |  | Seed | Jan 01, 2026 |  |
| Jiro | Jiro is a financial services company that offers business loans. | $578.5K | Pre-Seed | Nov 07, 2025 |  |
| Autonomous Minds | Autonomous Minds is a business committed to developing intelligent systems at the cutting edge of robotics and artificial intelligence. Creates solutions that enhance decision-making, expedite procedures, and promote human-machine cooperation. | $845.9K | Pre-Seed | Oct 26, 2025 |  |

10 of 18 investments shown.

## Co-investors
- [b2venture](https://shizune.co/investors/profile/btovpartners) — VC Fund, 2 deals together
- [Plug & Play](https://shizune.co/investors/profile/plug-play-9762) — VC Fund, 2 deals together
- [Speedinvest](https://shizune.co/investors/profile/speedinvest) — VC Fund, 2 deals together
- [SFC Capital](https://shizune.co/investors/profile/startup-funding-club) — VC Fund, 2 deals together
- [1984 Ventures](https://shizune.co/investors/profile/1984-ventures) — VC Fund, 1 deal together
- [Adeline Arts & Science](https://shizune.co/investors/profile/adeline-arts-science) — VC Fund, 1 deal together

## Similar investors

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

## FAQ

### What does rule30 invest in?

rule30 invests primarily in Medical, Software and Health Care startups, most often at Pre-Seed stage. Most of the 18 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is rule30's check size?

rule30 typically joins rounds of $732k–$3M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds rule30 participates in.

### When did rule30 last invest?

The most recent investment recorded for rule30 closed in Jul 2026. Shizune tracks 18 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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