d3i

What d3i does

d3i is a privately held software venture studio headquartered in Milton Keynes, United Kingdom, founded in 2007 by Oliver Waters and Michael Waterfall. Originally operating as a client-services software agency, the company transitioned into a venture studio model that develops its own consumer-facing digital products, while also co-creating ventures with external partners by providing digital product expertise.

The company's product portfolio has spanned four distinct iOS and web applications over its history. Its flagship and currently active product is Momento, an iOS journaling app launched in 2009 that automatically aggregates user activities, photos, and content from social networks and web services into a private journal; Momento has received explicit recognition from Apple and global feature placement. The company also launched Typify (a personal web page builder, 2013-2016), Stache (a bookmarking and web archiving tool, 2014-2022), and Orbit (a professional community platform, 2020-2023), all three of which have since been discontinued. Core technical expertise spans iOS/macOS mobile application development, web application development, UX and interface design, product management, and digital product marketing.

The business model is not publicly disclosed, with no pricing information available on the company website and no revenue figures reported. Products are distributed primarily through the iOS App Store and direct web channels. The company has 1-10 employees, no disclosed external funding rounds, and operates as a founder-owned, bootstrapped entity. Its primary disclosed operational partnership is with MailChimp for email address management and user communications.

Name

d3i

Legal name

d3i Limited

Website

https://d3i.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

1–10 employees

Short description

d3i is a UK-based privately held software venture studio founded in 2007 that develops consumer-facing digital products, most notably Momento, an award-winning iOS journaling app that automatically aggregates life memories from social networks and photos for individual consumers globally.

Ownership category

akta.pro rank

Headquarters

HQ city

Milton Keynes

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Distribution channels1 record

Core offering

d3i is a software venture studio that designs, develops, and ships its own consumer-facing digital products, with the flagship being Momento — an award-winning iOS journaling app that automatically creates a private journal from a user's daily activities, photos, and content from social networks and web services. The studio also co-creates ventures with external individuals and companies, providing digital product expertise in iOS/macOS and web application development, UX/interface design, product management, and digital marketing.

Product overview

d3i is a software venture studio that develops a portfolio of independent digital products. The company operates four distinct consumer-facing products: Momento (an intelligent iOS journaling app launched in 2009 that automatically aggregates life memories from social networks and photos), Orbit (a professional community platform from 2020-2023), Stache (a visual bookmarking tool from 2014-2022), and Typify (a personal webpage generator from 2013-2016). The portfolio represents independently developed ventures rather than a unified platform architecture.

Differentiator

Problem solved

Functional benefit

Brands

• Momento: Award-winning, category-defining iOS journaling app that automatically creates a smart private journal from daily activities and photos on social networks.
• Orbit
• Stache
• Typify

Products and services

• Momento An award-winning, category-defining iOS journaling app for individual consumers that automatically creates a smart private journal from the user's daily activities, photos, and content from popular social networks and web services, delivering an intelligent life-logging experience.
• Orbit A community platform for professional networks that enabled users to build, manage, and engage professional communities, supporting meaningful relationships, knowledge sharing, and opportunity creation.
• Stache A bookmarking and web page archiving tool that allowed users to quickly collect, organize, and rediscover useful, interesting, or inspiring web pages in a beautiful, visual, and fully searchable library.
• Typify A personal webpage builder that created a simple, unified online presence that stayed up to date automatically, simplifying personal web page creation for individual users.

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Recent moves7 records

Expansion highlights3 records

Broad incumbents

• Rocket Internet: Rocket Internet is a global venture studio and incubator that builds and scales consumer internet companies. While much larger and more capital-intensive than d3i, it operates the same studio model of internally building and operating digital products rather than purely investing.
• Notion: Notion has expanded from productivity/notes into personal journaling use cases with templates and lightweight AI features, overlapping with Momento's journaling audience. While primarily workplace-focused, Notion's breadth and brand recognition pose a long-term competitive threat to niche iOS-first journaling apps.
• Evernote: Evernote (now owned by Bending Spoons) is a long-established note-taking and journaling product that overlaps significantly with Momento's use case of capturing personal life content. While Evernote is broader (notes, web clipping, tasks), it competes directly for the personal memory-capture workflow that defines Momento's value proposition.
• Idealab: Idealab is one of the longest-running technology venture studios, founded in 1996, that creates and operates its own consumer technology companies. It is comparable to d3i's venture studio approach of self-building and operating digital products rather than purely investing in external teams.
• Betaworks: Betaworks is a New York-based venture studio that builds and incubates consumer internet products, directly comparable to d3i's venture studio model of conceiving, building, and shipping its own digital products. Both studios share the studio-thesis of repeatedly launching consumer products and selectively sunsetting underperformers.

Emerging players

• Penzu: Penzu is a long-running digital journaling platform offering private online journals across web and mobile. While more text-oriented than Momento's automatic-aggregation model, it serves the same fundamental use case of private personal journaling and competes for the same end user.
• Stoic: Stoic is an emerging iOS journaling app focused on mental health and reflection, directly comparable to Momento's personal journaling use case but with a more specific therapeutic/mindfulness angle. It targets the same iOS premium user base with a more focused proposition.

Direct peers

• Day One: Day One is the most direct competitor to Momento - a premium journaling app available across iOS, macOS, and Android that emphasizes private journaling with rich media. It targets the same use case (private digital journaling) and the same design-conscious iOS user base, and was acquired by Automattic (WordPress parent) which gives it substantially more resources than d3i.
• Bear: Bear is a beautifully designed iOS/macOS note-taking and journaling app by Shiny Frog, comparable to Momento in its premium aesthetic, Apple-platform focus, and consumer creative-prosumer target audience. It competes for the same discretionary writing-and-reflection use case on iOS.
• Journey: Journey is a cross-platform journaling app (iOS, Android, web, Mac) with similar automatic-import and rich-media features to Momento. It directly competes for users seeking a private digital journal with social-network import, and offers stronger multi-platform coverage than d3i's iOS-first product.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights5 records

Customer concentration

• Xx.com/d3i
• LinkedInlinkedin.com/company/d3i-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about d3i