AI Diary vs Mentalio (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: AI Diary does not list a price
Free plan
Tie
Both have one
Higher rating
AI Diary
3.1 against 3.0
Same job?
Yes
Both are Fitness & Wellness AI tools

Side by side

Compared on	AI Diary	Mentalio
Our rating	3.1Better	3.0
Starts at	Free	Free
Free plan	Yes	Yes
Category	Fitness & Wellness AI	Fitness & Wellness AI
Plans	Free	Free
Key features	GPT-powered conversation based on your own diary entries Automatic mood tracking with graphical visualization Writing analysis - readability, vocabulary, grammar, structure Voice narration and spoken AI responses AI-generated summaries and poems from entries	AI-powered mood tracker with personalized graphs and insights Guided breathing exercises for in-the-moment stress relief Self-assessment tests and educational mental health materials Weekly statistics to spot patterns in mood over time Free to download on both iOS and Android
Pros	Named, real underlying model (OpenAI GPT) rather than vague AI claims Genuinely multi-modal - text, voice, mood visualization, and generated content together Privacy emphasized with encryption and separate data storage	Free to download with no upfront cost to try Combines mood tracking, breathing exercises and education in one app Available on both major mobile platforms
Cons	Free tier is quite limited - 5 daily messages, no mood analysis or history Emotional/mood analysis from an AI should complement, not replace, real mental health support Value depends on consistent daily journaling habit to build up useful history	Not a clinical treatment or diagnostic tool; serious symptoms need a professional Only 8 App Store ratings, a thin evidence base for real-world use No update since November 2023, roughly three years before this review
Company	AI Diary	Bitsens

Prices come from each vendor's pricing page, last checked 20260923. Check the vendor before you buy.

FAQ

Questions people ask

Is AI Diary better than Mentalio?

In our reviews AI Diary scores 3.1 and Mentalio scores 3.0. The better pick depends on the job. AI Diary: Write your entry, then talk it through with an AI that knows your diary's mood history - GPT-powered conversation, emotion tracking, and voice interaction built around personal journaling. Mentalio: AI-powered mood journal and self-help app from Bitsens with breathing exercises, self-tests and educational materials for stress and anxiety.

Which is cheaper, AI Diary or Mentalio?

AI Diary: free. Mentalio: free.

Do AI Diary and Mentalio have free plans?

Yes, both have a free plan.

More comparisons

AI Diary compared with

All AI Diary alternatives

Mentalio compared with

All Mentalio alternatives