# Kinnu vs Think Again

The clearest difference is rating: Kinnu at 4.8 against Think Again's 2.7. Kinnu also leads on review sentiment (87% vs 50%) and update cadence (every 6 days vs every 2 months). Think Again's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Kinnu sells 4 in-app purchases, starting at $1.99 per month and Think Again sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Kinnu holds the better App Store score, 4.8 against 2.7. That said, the two scores are not equally well evidenced: Kinnu has 518 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 87% of Kinnu's written reviews are positive against 50% of Think Again's.

Kinnu ships an update every 6 days, Think Again every 2 months. The most recent releases landed on November 12, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Kinnu | Think Again |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (518 ratings)](https://appshunter.io/ios/app/kinnu-general-knowledge/id1625333066/reviews)** | [2.7 (3 ratings)](https://appshunter.io/ios/app/think-again/id6755461521/reviews) |
| Number of ratings | **518** | 3 |
| Positive reviews | **87.2% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 101 MB | 17 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Kinnu Limited](https://appshunter.io/developer/1625333068) | [Jeremy Stangroom](https://appshunter.io/developer/1854054002) |

## What reviewers say

### Kinnu

[App page](https://appshunter.io/ios/app/kinnu-general-knowledge/id1625333066)

This app offers bite-sized learning content across a wide range of subjects, from psychology and science to history and technology. It utilizes cognitive science and a unique "Memory Shield" technology to help users retain information effectively, making learning engaging and fun.

**Highlights:** Bite-sized, expert-edited content, Memory Shield technology for retention, Gamified learning sessions, Community-driven content development, Knowledge Bank progress tracking, Interactive, adaptive questions, Audio versions of content

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Kinnu Certificate | $7.99 | one-time |
| Kinnu Certificate | $14.99 | one-time |
| Kinnu Certificate | $19.99 | one-time |

**What reviewers like**

- 👍 Engaging learning experience
- 🚀 Efficient micro-learning format
- 🔒 No ads or subscriptions
- 💡 Wide range of interesting topics
- 👍 Gamified learning approach

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🐛 Syncing and progress issues
- 🐛 Inaccurate or incomplete information
- 🐛 AI-generated content quality concerns
- 🐛 Inability to contact developers

**Reported bugs**

- Frequent app crashes
- Progress and data loss issues
- Syncing problems
- Compatibility issues with older devices

**Requested features**

- Ability to highlight or take notes
- More in-depth content and sources
- Customization options (e.g., dark mode)
- Ability to connect with others
- Improved notification and reminder system


### Think Again

[App page](https://appshunter.io/ios/app/think-again/id6755461521)

Explore classic philosophical thought experiments to challenge your thinking, uncover biases, and compare your reasoning with others. Analyze your patterns and gain deeper insights into your worldview. Designed for discovery with a distraction-free interface and offline functionality.

**Highlights:** Classic philosophical thought experiments, Analyze reasoning and cognitive biases, Compare responses with global averages, Detailed analysis of user responses, Offline access to completed experiments, Privacy-focused data storage

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | one-time |


## Frequently asked questions

### Is Kinnu free?

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

### Is Think Again free?

Think Again is free to download, with in-app purchases available.

### Which has better reviews, Kinnu or Think Again?

Kinnu is rated higher. Kinnu averages 4.8 out of 5 from 518 ratings, while Think Again averages 2.7 from 3 ratings.

### Do Kinnu or Think Again have ads?

Neither Kinnu nor Think Again shows ads.

### Which is updated more often, Kinnu or Think Again?

Kinnu ships an update every 6 days, and Think Again every 2 months. Most recently, Kinnu was updated on November 12, 2026 and Think Again on October 30, 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.*