# FlashFlex vs Raena AI

The clearest difference is update cadence: Raena AI at every 11 days against FlashFlex's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FlashFlex sells 2 in-app purchases, starting at $1.99 per month and Raena AI sells 11 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FlashFlex ships an update every 3 months, Raena AI every 11 days. The most recent releases landed on October 4, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | FlashFlex | Raena AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (855 ratings)](https://appshunter.io/ios/app/raena-ai-flashcards-and-notes/id6746026925/reviews)** |
| Number of ratings | — | **855** |
| Positive reviews | — | 46.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | — | Freemium |
| Size | 219 MB | 119 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zhuoyao lu](https://appshunter.io/developer/894406093) | [A.C.N. 643 454 086 Pty Ltd](https://appshunter.io/developer/1814774225) |

## What reviewers say

### FlashFlex

[App page](https://appshunter.io/ios/app/flashflex/id6502081911)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $19.99 | per year |


### Raena AI

[App page](https://appshunter.io/ios/app/raena-ai-flashcards-and-notes/id6746026925)

Transform study materials into interactive learning tools like quizzes, flashcards, and summaries using AI. This app helps students learn more effectively and retain information faster, offering features like AI tutors and study podcasts.

**Highlights:** AI Quiz Generator, Smart Summaries, Flashcards, Study Podcasts, AI Tutor, Brainrot Mode, Study Games

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $6.99 | per 7 days |
| Pro Plan | $6.99 | per 7 days |
| Pro Plan | $6.99 | per 7 days |
| Pro Plan | $13.99 | per month |
| Pro Plan | $13.99 | per month |
| Pro Plan | $13.99 | per month |
| Pro Plan | $33.49 | per year |
| Pro Plan | $79.99 | per year |
| Pro Plan | $83.99 | per year |
| Pro Plan | $83.99 | per year |
| Pro Plan | $89.99 | per year |

**What reviewers like**

- 👍 Good app
- 🚀 Helps improve grades
- 🚀 Saves time
- 🚀 Helpful features
- 👍 Love the app

**What reviewers complain about**

- 🔒 Need to pay to access
- 🔒 Blocked without subscription
- 🔒 Asks for credit card
- 🐛 Yucky pictures and naked people

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Dark mode option
- Improve marketing content


## Frequently asked questions

### Is FlashFlex free?

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

### Is Raena AI free?

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

### Do FlashFlex or Raena AI have ads?

Neither FlashFlex nor Raena AI shows ads.

### Which is updated more often, FlashFlex or Raena AI?

FlashFlex ships an update every 3 months, and Raena AI every 11 days. Most recently, FlashFlex was updated on October 4, 2026 and Raena AI on October 21, 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.*