Mynd
Mynd is a web journaling tool that reads your written entries and surfaces three root states — flow, heightened and low — plus recurring patterns and emotional intensity over time. English entries only, United States only.
What is Mynd?
Mynd is an AI-assisted journaling application published by B612, Inc., a Delaware corporation based in Seattle, Washington. The premise is narrow and stated plainly: you write, and the software reads what you wrote back to you in a structured form. It calls itself a self-help tool for lifelong learners, never a therapeutic service.
The analysis comes in three layers. The first is root states — the site names three, flow, heightened and low — which Mynd claims to identify from your very first entry. The second is Mynd Patterns: once several entries exist, the tool begins to surface the recurring motifs behind those states, on the argument that patterns are precisely what a person writing alone tends not to see. The third is emotional tracking, which follows the intensity of emotions across entries rather than treating each one in isolation.
The technical chain behind this is disclosed, which is unusual at this scale. The privacy policy and the terms both name OpenAI and Hume.ai as third-party providers handling artificial intelligence operations and language processing. Hume.ai specialises in measuring emotional expression, which lines up with the emotional-pattern feature. Your private content is sent to them, and once disclosed it falls under their policies rather than Mynd's — a point worth weighing against the homepage claim that entries are encrypted and cannot be read by B612 staff.
Delivery is deliberately limited. Mynd runs as a web application at app.mynd.so behind a login: there is no mobile app, no public API, no integration with anything else. Entries must be written in English, and the Terms of Use provide the service for people located in the United States only. Users keep the intellectual property in what they write and can delete any data or the whole account at will.
The site has not visibly moved since December 2024: the banner advertises a release dated 12/12/2024, and both legal documents are version 3.0 dated 10 December 2024.
What it does
- Write journal entries in a private, encrypted space
- Identify your root state — flow, heightened or low — from the very first entry
- Surface the recurring patterns behind those states once you have written several entries
- Track the intensity of your emotions as it shifts over time
- Delete individual data or your whole account at any moment
When to use Mynd / When not to
A quick filter to help you decide if Mynd is the right fit.
When to use Mynd
- People who already keep a journal and want something to read the recurring shape of it back to them
- Self-directed learners working on personal growth without a coach or a therapist
- English-speaking users based in the United States, the only audience the terms actually cover
- Anyone on a tight budget: the paid tier costs USD 5.55 a month and the free tier never expires
- Solo users who want a private, encrypted writing space with no team, sharing or collaboration layer
When not to use Mynd
- Anyone in crisis or writing about self-harm: the site states plainly that Mynd is not designed for those topics
- People looking for clinical support — Mynd offers no diagnosis, no treatment and no licensed practitioner
- Users outside the United States, whom the terms explicitly place outside the intended audience
- People who want to write in a language other than English, the only one entries support
- Teams, businesses and developers: there is no API, no integration, no mobile app and commercial use is forbidden
How to use Mynd
A typical end-to-end flow, from setup to results.
- Open app.mynd.so from the Sign in / Sign Up link on the homepage and create an account
- Skip any setup: there is nothing to install, configure or connect
- Write your first entry, in English
- Read the root state Mynd assigns to that entry — flow, heightened or low
- Keep writing: the free tier allows three entries per month
- Wait for patterns to form — they need several entries before Mynd can surface anything
- Unlock your first pattern, which is what starts the seven-day Mynd+ trial
- Review your emotional patterns and how their intensity moves across entries
- Upgrade to Mynd+ if the monthly entry cap becomes the limiting factor
- Delete individual data or close the account entirely whenever you choose
Pros & Cons
Pros
- Entry price of USD 5.55 a month, among the lowest in this category
- A permanent free plan rather than a trial that expires into nothing
- The homepage states the product's limits openly, which very few tools in this space do
- The terms confirm in writing that you own the intellectual property in what you write
- Data and account deletion available at any time, with no stated conditions
- AI subprocessors named outright — OpenAI and Hume.ai — instead of hidden behind generic wording
- Legal documents are dated and version-numbered, so you can tell what you agreed to
Cons
- The GDPR is never mentioned anywhere on the site, on a product built around intimate writing
- Use is contractually restricted to people located in the United States
- English is the only language entries support
- The free plan caps you at three entries a month, which is thin for a journaling habit
- Subscriptions renew automatically without prior notice and are non-refundable
- No figure is given for data retention, no DPA, no certification and no hosting location
- Nothing on the site has visibly changed since December 2024
Pricing & Plans
A permanent free plan is available, limited to three entries per month with restricted root states and access to patterns. The cheapest paid option is Mynd+ at USD 5.55 per month, which lifts the limits on entries, root states and patterns. A seven-day Mynd+ trial is granted, triggered when the first pattern is unlocked rather than at sign-up. No annual rate is published, and subscriptions renew automatically and are non-refundable.
- 3 entries per month
- limited root states
- access to patterns
- unlimited entries
- unlimited root states
- unlimited patterns
Data, GDPR & hosting
A consolidated view of how Mynd handles your data.
GDPR overview
There is no GDPR framework on this site, and the wording matters: this is total silence, not a refusal. Across the homepage, the privacy policy and the terms, the words GDPR, EEA, European Union and data protection never appear once. No Article 27 representative is named, no data protection officer is designated, no legal basis for processing is stated, and no Data Processing Agreement is published or offered. The terms restrict use to people located in the United States, which partly explains the absence. Some equivalent rights do exist contractually: you may request access, correction or deletion of your data by writing to info@mynd.so, subject to identity verification, and you may delete your account at any time. The applicable law is that of Washington State.
Who owns the data?
Under the Terms of Use dated 10 December 2024, you keep full ownership of the intellectual property in the private content you write; B612, Inc. only receives permission to store it on your behalf. That permission is not exclusive to B612. Your private content may be sent to OpenAI and Hume.ai for language processing and emotional analysis, and once disclosed those companies handle it under their own policies rather than Mynd's. B612 also reserves the right to share information inside its corporate group, with service providers, with acquirers in a merger or bankruptcy, and with authorities on legal request. It states it does not sell personal information.
Reuse rights
Two different things are governed here and they should not be confused. Your own entries remain yours: you own the intellectual property, you can delete any item or your entire account whenever you want, and you need no permission from B612 to reuse what you wrote. The site's own material is the opposite. The Terms of Use grant a personal, non-commercial licence only. You may cache pages in your browser and print or download a single copy of a reasonable number of pages for personal use; you may not reproduce, redistribute, modify, republish or build derivative works from Mynd's content, strip its copyright notices, use automated tools to copy it, or exploit any part of the site commercially. Deep linking is restricted to the homepage. Anything beyond that requires written permission, requested at info@mynd.so.
Data retention & training
Hosting summary
The publisher declares nothing about where data is hosted. No hosting country, no region, no infrastructure provider and no certification such as SOC 2 or ISO 27001 appears anywhere on the site, and no Data Processing Agreement is published or offered. What is established is the jurisdiction rather than the storage: B612, Inc. is a Delaware corporation operating from Seattle, the Terms of Use are governed by the law of Washington State, disputes go to the federal or state courts in King County, Seattle, and the publisher may require arbitration under American Arbitration Association rules. The service is offered to people located in the United States only. Two named subprocessors handle private content — OpenAI and Hume.ai — but their own hosting arrangements are not described. Technical observation places the site's front end on Amazon infrastructure, though the publisher makes no such claim itself and that indication says nothing about where journal entries are actually stored.
Where Mynd works
Country-level availability.
Available in
Not available in
Things to keep in mind
Risks and trade-offs to weigh before adopting Mynd.
- A journal invites your most private writing, yet this site never mentions the GDPR, names no data protection officer and publishes no processing agreement
- The encryption claim on the homepage does not stop your entries being sent to OpenAI and Hume.ai, where the receiving company's own policies take over
- No published position on whether entries are used to train AI models, and no opt-out offered for that specific use
- No retention period is given in figures, and aggregated or de-identified data is placed outside the privacy policy altogether, so outside its deletion regime
- Subscriptions renew automatically without prior notice and are non-refundable, a combination that punishes inattention
- The minimum age is 13 in the terms and 16 in the privacy policy; a teenager, a parent and the publisher could each read this differently
- Being told which state of mind you are in can become a substitute for noticing it yourself — and the tool is explicitly not built for the hardest entries a journal attracts
Setup & Integrations
Technical difficulty
Essentially none. Mynd runs entirely in the browser: create an account at app.mynd.so and start writing. There is nothing to install, no API key to generate, no integration to configure and no technical prerequisite beyond a web browser. The only real friction is behavioural rather than technical — patterns do not appear until several entries have been written, so the tool asks for a writing habit before it returns anything of substance, and the free plan's three entries per month slow that down.
Deployment
Supported languages
Behind Mynd
Social
Resources
All the official URLs gathered for verification and reference.
Frequently asked questions
What does Mynd actually do with what I write?
Is there a free version, and what does the paid one cost?
How does the free trial work?
Can I use Mynd from Europe?
Who can read my entries?
Are my entries used to train AI models?
Can I delete my data?
What is the minimum age?
Is there a mobile app or an API?
Can Mynd replace therapy or counselling?
Should you pick Mynd?
Mynd is a deliberately narrow product, and it does not pretend otherwise. One use case, one language, one territory, one delivery mode: you write in English, from the United States, in a browser, and the software gives you back root states, patterns and emotional trends. Within that perimeter it is coherent and inexpensive, with a permanent free plan and a paid tier at USD 5.55 a month that undercuts most of the category.
What sets it apart is candour about its own boundaries. Very few tools in personal wellbeing state on their homepage that they are not designed for self-harm topics, point users to a crisis service, disclaim any medical value, and name their AI subprocessors — OpenAI and Hume.ai — instead of hiding behind generic language about service providers. The terms confirm you keep the intellectual property in what you write and can delete everything at will.
The counterweight is what is not written down. There is no mention of the GDPR anywhere, no retention period expressed in figures, no published position on whether entries feed model training, no DPA, no certification and no declared hosting location. Aggregated or de-identified data is explicitly placed outside the privacy policy. Billing renews automatically without prior notice and is non-refundable, and the documents contradict each other on the minimum age — 13 in the terms, 16 in the privacy policy.
One last thing to weigh: nothing on the site appears to have changed since December 2024. For a low-cost, US-based, English-language journaling habit, Mynd is a reasonable and honest proposition. For anyone in Europe, or anyone who needs to know exactly where intimate writing is stored and for how long, the published documentation does not answer the question.
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