# Littlebird AI vs Second Brain

Littlebird AI and Second Brain both sit at 4.3 stars, but that hides the real split: 100% of Second Brain's written reviews are positive against 79% of Littlebird AI's. Littlebird AI's advantage is ratings volume (66 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Littlebird AI sells 9 in-app purchases, starting at $19.99 per month and Second Brain sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Second Brain holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Littlebird AI has 66 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 79% of Littlebird AI's written reviews are positive against 100% of Second Brain's.

Littlebird AI ships an update weekly, Second Brain every 9 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Littlebird AI | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (66 ratings)](https://appshunter.io/ios/app/littlebird-ai/id6737920045/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340/reviews)** |
| Number of ratings | **66** | 2 |
| Positive reviews | 78.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | Freemium |
| Size | 64 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Little Bird Software, LLC](https://appshunter.io/developer/1778525821) | [Liwei Xie](https://appshunter.io/developer/1106616046) |

## What reviewers say

### Littlebird AI

[App page](https://appshunter.io/ios/app/littlebird-ai/id6737920045)

This AI-powered assistant allows you to chat with your AI on the go and access files, notes, and conversations from your Mac. It keeps your conversations in sync across devices, ensuring you can pick up where you left off.

**Highlights:** AI-powered personal assistant, Chat on the go, Access desktop context, Recall files and notes, Stay in sync across devices

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Littlebird Plus Monthly | $19.99 | per month |
| Littlebird Power Monthly | $49.99 | per month |
| Littlebird Pro | $99.99 | per month |
| Littlebird Pro (More Usage) | $199.99 | per month |
| Littlebird Plus | $204.99 | per year |
| Littlebird Power Annual | $509.99 | per year |
| Usage Credits (Small) | $49.99 | one-time |
| Usage Credits (Medium) | $249.99 | one-time |
| Usage Credits (Large) | $999.99 | one-time |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340)

Capture your thoughts and get weekly insights into your week's focus, changes, and actionable advice. Search your notes by meaning, manage contacts, and set reminders with ease. Your personal reflection tool, designed for daily use.

**Highlights:** Weekly self-insight reports, Search notes by meaning, Contact management, Automated titling and tagging, Reminders and checklists, On-device and cloud AI options, Data export (JSON/Markdown)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro | $4.99 | per month |
| Second Brain Pro | $39.99 | per year |


## Frequently asked questions

### Is Littlebird AI free?

Littlebird AI is free to download, with in-app purchases available.

### Is Second Brain free?

Second Brain is free to download, with in-app purchases available.

### Which has better reviews, Littlebird AI or Second Brain?

Second Brain is rated higher. Littlebird AI averages 4.3 out of 5 from 66 ratings, while Second Brain averages 4.5 from 2 ratings.

### Do Littlebird AI or Second Brain have ads?

Neither Littlebird AI nor Second Brain shows ads.

### Which is updated more often, Littlebird AI or Second Brain?

Littlebird AI ships an update weekly, and Second Brain every 9 days. Most recently, Littlebird AI was updated on October 30, 2026 and Second Brain on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*