# Kinnu vs OE

The clearest difference is in-app purchases: OE at none against Kinnu's 4. OE also leads on iOS requirement (15.5 vs 17.0). On price, ads 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. OE asks for nothing beyond the download.

## The numbers

| Metric | Kinnu | OE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (515 ratings)](https://appshunter.io/ios/app/kinnu-general-knowledge/id1625333066/reviews)** | — |
| Number of ratings | **515** | — |
| Positive reviews | 87.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 101 MB | 63 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Kinnu Limited](https://appshunter.io/developer/1625333068) | [Octopus Energy Ltd](https://appshunter.io/developer/1877679927) |

## 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


### OE

[App page](https://appshunter.io/ios/app/oe-spark-together/id6784345422)

**In-app purchases:** none


## Frequently asked questions

### Is Kinnu free?

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

### Is OE free?

OE is free to download, with no in-app purchases.

### Do Kinnu or OE have ads?

Neither Kinnu nor OE shows ads.

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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.*