See the change you want to Be in the world.

Bigsys Journal reads every entry you write and turns your raw thoughts into charts, trends, and patterns you can actually learn from.

Mood trend (7 days)
6
7
5
7
8
9
5
MonTueWedThuFriSatSun
Top themes
Work
22
Health
14
Family
11
Money
8
Goals
6
Energy score
67%
6.8
avg this week
+0.9 from last week
This week vs last
5.9
6.8

See Bigsys Journal in action

A quick walkthrough of writing an entry, seeing the analysis, and exploring your patterns.

Write. Analyse. Discover.

Three steps from raw thought to actionable insight. No fluff.

1
Write freely

Open the editor and type. a stream of consciousness, bullet points or morning thoughts then pick your mood in one tap.

2
Bigsys Journal analyses it

AI surfaces a mood tag, energy score, themes, entities, and a reflection thought. Every entry. Every time. In seconds.

3
See the charts

Weekly digests turn your entries into mood trends, theme frequency bars, and correlations. Your life, datafied.

Every pattern, charted.

Your entries feed into a live dashboard that shows you what matters.

June 2026 - entry activity
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Mood vs Energy (last 14 days)
6
5
5
6
7
7
8
6
8
7
9
8
9
8
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Mood Energy
16
journal entries
+3 vs last week
4
patterns found
+2 new this week

No paywalls. No limits.

Every feature is yours Free from day one.

Mood tracking

Tag entries by mood. Bigsys Journal reads between the lines too, catching tones you missed.

Theme detection

AI extracts topics from every entry. See what occupies your mind week by week.

Reflection thoughts

Each entry gets a reflective question. "You mentioned work stress - what part?"

Pattern digests

Weekly charts of your emotional arc, themes, and hidden correlations.

Calendar view

Activity heatmap and mood dots. See your journaling consistency at a glance.

Full export

All entries, analyses, and digests as JSON. Your data, yours to take anywhere.

Encrypted at rest

Every entry encrypted with AES-256-GCM before it touches the database. Your words stay yours.

Cross-table search

Search entries, digests, and pattern discoveries in one go. Find anything instantly.

Entity tracking

People, places, and topics tracked across entries. See sentiment and trends for each one.

Always free

No subscription, no trial, no gates. Donate if it helps you. No pressure.

Your week, visualised

Bigsys Journal works seamlessly in the background to generate your weekly/monthly pattern digests.

Weekly digest - 28 Jun 2026
6.8
avg mood
4
top themes
16
entries

Pattern found: "Your energy dips mid-week every week for the last 4 weeks. Wednesday entries consistently mention fatigue. You also write 40% less on Thursdays."

Question for you: "You haven't mentioned your creative project in 12 days. Is it on hold, or is there something you're avoiding?"

Insights this month
Mood avg
6.8
Energy
6.2
Consistency
53%
Reflection
42%
Correlations found
Morning journaling → 20% higher mood scores
Exercise mentions → +1.5 energy next day
Late-night entries → lower mood scores (-0.8)

Your words, encrypted.

Your journal is private by design. Every layer is built to keep it that way.

AES-256-GCM encryption

Every word you write is encrypted before it reaches the database. AES-256 in GCM mode with a unique key and random nonce per entry. Even if the database were compromised, your words are unreadable without you logging into your account, even our dev team cannot read what you write.

No data training

Your entries are never used to train AI models. The LLM that analyses your writing has a strict no-retention policy. What you write stays between you and Bigsys Journal.

Full export & deletion

Download your complete journal as JSON anytime. Delete your account and everything - entries, analyses, digests - is permanently removed.

Whats the cost? You decide!

No tiers, no trials, no feature gates. Every analysis, every digest, every chart - yours at no cost. If it brings value, donate what you can.

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