# Rain Rannu

> Rain Rannu is a seed investor at Mobi (San Francisco) backing Software and CRM. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Mobi](https://shizune.co/investors/profile/mobi-solutions)
- Location: San Francisco, United States
- Total investments: 4
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/rainrannu/
- X (Twitter): https://twitter.com/rainrannu
- Website: https://x.com/rainrannu
- Facebook: https://www.facebook.com/rainrannu

Rain Rannu is a seed investor at Mobi in San Francisco focused on Software and CRM. Rain Rannu has been a long-time serial entrepreneur in the mobile payments space ever since founding his first company back in 2000. In 2007 he founded Fortumo, the fast-growing mobile payments service for digital and virtual content now available in more than 80 countries. They have recently raised funding from Intel Capital and GreycroftPartners, and are employing more than 60 people in Estonia, Beijing and San Francisco. Rain Rannu has also been an active member in the Estonian startup scene as a founder of Garage48, among other things.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $540k–$2.5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 50% |
| CRM | 1 | 25% |
| Film | 1 | 25% |
| SaaS | 1 | 25% |
| Lighting | 1 | 25% |

19 industries tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 3 | 75% |
| Estonia | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Bolt | Bolt is a transportation platform providing ride-hailing, micromobility, and food delivery services. It is one of the fastest-growing startups in the world with over 75M happy customers in 45+ countries, from Europe to Latam to Africa. It is building the future of logistics – one platform that connects with cars, motorcycles, scooter sharing, orfood delivery from restaurants.It believes in a future with less car ownership and flexible urban mobility. By bringing reliable on-demand transport to the masses, it helps cities evolve towards decreased traffic congestion and pollution.Bolt was founded in 2013 and is headquartered in Tallinn, Estonia. | $1.5M | Seed | Dec 18, 2014 |  |
| Digital Sputnik | Digital Sputnik designs, manufactures, and distributes LED lights and other lighting equipment. The company manufactures lighting tools for filmmakers for movie productions. The lighting systems could be paired up with software to provide lighting and animation via remote control. The products include light module system that can be powered byV-mount batteries or DC. | $540K | Seed | Oct 15, 2014 |  |
| Teleport | Teleport builds software to move individuals to the best place to live and work. It enables users to explore the best cities based on their personal preferences, and lend them a hand with preparing and executing the move. The company aims to make physically rearranging the human population just as easy. | $2.5M | Seed | Sep 08, 2014 |  |
| Pipedrive | Founded in 2010, Pipedrive is the global sales-first CRM and intelligent revenue platform for small businesses. Today, Pipedrive is helping more than 100,000 sales teams worldwide to get more qualified leads, close deals faster, and grow their revenue. | $2.4M | Seed | Sep 18, 2013 |  |

4 of 4 investments shown.

## Co-investors
- [TMT Investments](https://shizune.co/investors/profile/tmt-investments) — VC Fund, 2 deals together
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund, 1 deal together
- [Fresco Capital](https://shizune.co/investors/profile/fresco-capital-advisors) — VC Fund, 1 deal together
- [Rembrandt Venture Partners](https://shizune.co/investors/profile/rembrant-venture-partners) — VC Fund, 1 deal together
- [RubyLight](https://shizune.co/investors/profile/rubylight) — VC Fund, 1 deal together
- [Seedcamp](https://shizune.co/investors/profile/seedcamp) — VC Fund, 1 deal together

## About Mobi

VC Fund · Tartu, Estonia

Mobi is a holding and investment company of Mobi Solutions group

4 contacts available at Mobi.

| Name | Title | Profile |
| --- | --- | --- |
| Rain Rannu | Co-Founder & Partner | https://shizune.co/investors/profile/rain-rannu |
| Rain Rannu | Co-Founder & Partner | https://shizune.co/investors/profile/rain-rannu-a5c2 |
| Linnar Viik | Co-owner, Member of the Board, Strategy&Investments | https://shizune.co/investors/profile/linnar-viik |
| Veljo Otsason | Founder | https://shizune.co/investors/profile/veljo-otsason |

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## FAQ

### What does Rain Rannu invest in?

Rain Rannu invests primarily in Software, CRM and Film startups, most often at Seed stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Rain Rannu's check size?

Rain Rannu typically joins rounds of $540k–$2.5M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Rain Rannu participates in.

### 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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