Pyunto: Private Diary
In-app purchases
Everyone
info
10+
Downloads
About this app
A place to write how you feel right now, with peace of mind.
Pyunto is a private diary app for one person, two people, or a group. No account or email needed: open it and write. Every entry is encrypted, and the AI assistant runs only on your device. You can even invite an AI agent or a robot into a diary as a member.
WHY PYUNTO
Solo diary, exchange diary for two, group diary - one "space" per relationship
On-device AI: your diary is not sent away to power the assistant
Everything encrypted in transit and in storage
Android, iPhone, Mac, Windows; 17 languages
WRITE AND KEEP
Text, photos and videos, up to 10 per post
Edit after posting: text, photo, date and time
Album: all photos and videos of a space in one grid
Hashtags (outfit, food, concert), offline search
Quick lists: log medicine, meals or books read in one tap, with counts by week, month and year
Mascot stickers, reactions
HOW PEOPLE USE IT
Outfit diary: photograph what you wore. Calendar and album show what you wore on which date and with whom, so you never repeat an outfit when you meet the same person again. Tag entries as date, girls night or office and ask the assistant for outfit tips for today's weather
After-school exchange diary: a secret notebook for best friends, with stickers, reactions and 100 background themes
Fandom, concerts, cafes, travel: relive it all in the album
Study, fitness and skincare logs
Five minutes before bed: one line a day, a weekly reflection on Sunday
Couples: exchange diary with daily missions and anniversaries
Parenting: share feeding and story time
Aging parents: medicine logged in one tap, family reacts
Work: team logs, field photos, care notes
AI ASSISTANT
Runs on your device. The model is a one-time download of several GB (Wi-Fi recommended)
Tap the assistant button on an entry for a reply that fits it - it understands photos too
One-on-one chat when you want to talk
Weekly reflection: your week summarized, with mood per day
Missions (daily writing prompts), up to 20 speaking styles, automatic thread titles
Tools: weather and outfit advice, news, recipes, nearby places, translation
Pyunto Time Management link: "What's on today?", "Book a meeting tomorrow morning"
INVITE AN AI AGENT OR A ROBOT Diary members need not be people. Invite an AI agent or a robot you run yourself by QR code.
AI agent: a language tutor, strength coach, nutrition adviser or study partner. You define its role and character; it replies in the diary and can read meal photos
Robot: write "go and find some sunlight" in plain words. It moves, then reports with photos from its own camera and measurements. No commands to learn. Robots act only on instructions from people
You approve every invitation on your phone Note: running an agent or robot requires a computer you control.
https://github.com/utagoeinc/pyunto-agent/
https://github.com/utagoeinc/pyunto-robotics/
SHARING AND PRIVACY
Join by QR code or invite link
Send with a notification or quietly; mentioning someone notifies only that person
40 original sounds, temporary mute
Passcode lock; minimal data collection
Create a new space and write there to use the latest end-to-end encryption (E2EE) for stronger protection
Optional account: multiple devices, encrypted key backup
No public timeline, no followers, no like counts
PRICE Free forever: diary, sharing, media, on-device assistant, encryption, passcode, quick lists, album, calendar, stickers, all 40 sounds. Pyunto+ (subscription): 100 backgrounds, 20 speaking styles, unlimited reflections and missions, per-space sounds, one agent plus one robot per space. Premium is per space: one subscriber covers every member.
Why not start with a single line about today?
Terms of Service: https://www.utagoe.com/terms/pyunto/terms.html
Privacy Policy: https://www.utagoe.com/privacy/
Pyunto is a private diary app for one person, two people, or a group. No account or email needed: open it and write. Every entry is encrypted, and the AI assistant runs only on your device. You can even invite an AI agent or a robot into a diary as a member.
WHY PYUNTO
Solo diary, exchange diary for two, group diary - one "space" per relationship
On-device AI: your diary is not sent away to power the assistant
Everything encrypted in transit and in storage
Android, iPhone, Mac, Windows; 17 languages
WRITE AND KEEP
Text, photos and videos, up to 10 per post
Edit after posting: text, photo, date and time
Album: all photos and videos of a space in one grid
Hashtags (outfit, food, concert), offline search
Quick lists: log medicine, meals or books read in one tap, with counts by week, month and year
Mascot stickers, reactions
HOW PEOPLE USE IT
Outfit diary: photograph what you wore. Calendar and album show what you wore on which date and with whom, so you never repeat an outfit when you meet the same person again. Tag entries as date, girls night or office and ask the assistant for outfit tips for today's weather
After-school exchange diary: a secret notebook for best friends, with stickers, reactions and 100 background themes
Fandom, concerts, cafes, travel: relive it all in the album
Study, fitness and skincare logs
Five minutes before bed: one line a day, a weekly reflection on Sunday
Couples: exchange diary with daily missions and anniversaries
Parenting: share feeding and story time
Aging parents: medicine logged in one tap, family reacts
Work: team logs, field photos, care notes
AI ASSISTANT
Runs on your device. The model is a one-time download of several GB (Wi-Fi recommended)
Tap the assistant button on an entry for a reply that fits it - it understands photos too
One-on-one chat when you want to talk
Weekly reflection: your week summarized, with mood per day
Missions (daily writing prompts), up to 20 speaking styles, automatic thread titles
Tools: weather and outfit advice, news, recipes, nearby places, translation
Pyunto Time Management link: "What's on today?", "Book a meeting tomorrow morning"
INVITE AN AI AGENT OR A ROBOT Diary members need not be people. Invite an AI agent or a robot you run yourself by QR code.
AI agent: a language tutor, strength coach, nutrition adviser or study partner. You define its role and character; it replies in the diary and can read meal photos
Robot: write "go and find some sunlight" in plain words. It moves, then reports with photos from its own camera and measurements. No commands to learn. Robots act only on instructions from people
You approve every invitation on your phone Note: running an agent or robot requires a computer you control.
https://github.com/utagoeinc/pyunto-agent/
https://github.com/utagoeinc/pyunto-robotics/
SHARING AND PRIVACY
Join by QR code or invite link
Send with a notification or quietly; mentioning someone notifies only that person
40 original sounds, temporary mute
Passcode lock; minimal data collection
Create a new space and write there to use the latest end-to-end encryption (E2EE) for stronger protection
Optional account: multiple devices, encrypted key backup
No public timeline, no followers, no like counts
PRICE Free forever: diary, sharing, media, on-device assistant, encryption, passcode, quick lists, album, calendar, stickers, all 40 sounds. Pyunto+ (subscription): 100 backgrounds, 20 speaking styles, unlimited reflections and missions, per-space sounds, one agent plus one robot per space. Premium is per space: one subscriber covers every member.
Why not start with a single line about today?
Terms of Service: https://www.utagoe.com/terms/pyunto/terms.html
Privacy Policy: https://www.utagoe.com/privacy/
Solo, duo, or group
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
Great news!
- Attach documents: PDF, Word, Excel, PowerPoint, text, CSV and Markdown files (up to 100 MB each). They are encrypted like your photos, and open in the app you already use.
- Bug fixes.
Thank you for your feedback!
- Attach documents: PDF, Word, Excel, PowerPoint, text, CSV and Markdown files (up to 100 MB each). They are encrypted like your photos, and open in the app you already use.
- Bug fixes.
Thank you for your feedback!
App support
About the developer
UTAGOE INC
android-support@utagoe.com
1-28-10, TAKADANOBABA
SANKEI BLDG. 4F. CASE SHINJYUKU
SHINJUKU-KU, 東京都 169-0075
Japan
+81 3-6380-3089