The mood tracker that explains what is moving you

Who Nuju is for

• Self-awareness seekers who want to understand emotional patterns instead of just logging them.
• Daylio users who have outgrown emoji-only logging and want AI that interprets the data.
• People between therapy sessions who want grounded mood data to bring into the next appointment.
• Anxiety and overthinking patterns where seeing the rhythm of your week makes the spirals less surprising.

How Nuju tracks mood in 10 seconds

1. Tap a mood (Rough to Great) and slide your energy level.
2. Add a sentence of context if you want, so the AI can read for trends and themes.
3. Patterns build over weeks: 30-day charts, weekly summaries, and AI-detected cycles show up after a few entries.

What you actually get from Nuju

• 30-day mood and energy trend charts.
• Pixel calendar of your full month, color-coded by mood.
• Weekly AI summaries that interpret what changed, not just plot it.
• Pattern detection across moods, themes, and people.
• Mood paired with optional reflection so trends carry context.
• Encrypted storage, signed media URLs, no mood data sold, no AI training on your entries.

What you get free vs paid

Free

• 10-second mood and energy check-ins.
• Five-mood scale plus optional written reflection.
• Recent mood history at a glance.
• Basic AI insight on each entry.

Paid

• 30-day mood and energy trend charts.
• Pixel calendar of your full month.
• Weekly AI summaries of what changed.
• Pattern detection across themes and people.
• Relationship mood map: who shifts your mood.
• Full mood history, no week cap.

Nuju vs other mood tracker apps

Mood data is yours, not a product

Mood entries live in encrypted storage with private access controls. Media URLs are signed. Mood data is not sold and is not used to train AI models. Read the full handling on the privacy page.

Frequently asked questions

What is a mood tracker app?

A mood tracker app is a tool for logging how you feel over time so you can spot patterns, triggers, and trends. The good ones do more than collect data - they pair mood with context like written reflection or activities and surface what is actually moving your emotional baseline.

Is Nuju free to use as a mood tracker?

Yes. The 10-second mood and energy check-in and basic recent insight are free. Paid access unlocks 30-day trend charts, the pixel calendar, weekly AI summaries, pattern detection, and the relationship mood map.

How is Nuju different from Daylio?

Daylio is fast emoji and activity logging. Nuju adds optional written reflection, AI summaries that interpret what changed, and pattern detection that connects mood to themes and people. Use Daylio if you want pure speed; use Nuju if you want understanding.

Will my mood data be private?

Yes. Mood entries live in encrypted storage with private access controls, media URLs are signed, mood data is not sold, and your entries are not used to train AI models.