# IELTS Flex vs Clean Flag

The clearest difference is update cadence: Clean Flag at daily against IELTS Flex's fortnightly. IELTS Flex's advantage is iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. IELTS Flex sells 21 in-app purchases, starting at $68.99 per month and Clean Flag sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

IELTS Flex ships an update fortnightly, Clean Flag daily. The most recent releases landed on October 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | IELTS Flex | Clean Flag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ielts-flex/id6476671647/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 105 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 9+ |
| Developer | [Guided e-Learning](https://appshunter.io/developer/651514571) | [Jens Stoeber](https://appshunter.io/developer/6775767539) |

## What reviewers say

### IELTS Flex

[App page](https://appshunter.io/ios/app/ielts-flex/id6476671647)

Prepare for your IELTS exam with AI-powered practice tests, personalized feedback, and live classes. Get accurate score predictions and improve your writing and speaking skills with expert tutors.

**Highlights:** AI-powered IELTS preparation, Realistic mock tests, AI writing and speaking feedback, Live and on-demand classes, 1-to-1 expert tutor sessions, Score predictions

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

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month IELTS Flex Gateway | $68.99 | per month |
| 1 month IELTS Flex Advantage | $69.99 | per month |
| 1 month IELTS Flex Advantage | $88.99 | per month |
| 6 months IELTS Flex Gateway | $269.99 | per 6 months |
| 6 months IELTS Flex Gateway | $329.00 | per 6 months |
| 6 month IELTS Flex Advantage | $329.99 | per 6 months |
| 6 month IELTS Flex Advantage | $419.00 | per 6 months |
| Mock Exam | $3.99 | one-time |
| IELTS Flex Gateway | $9.99 | one-time |
| Feedback for completed work | $14.99 | one-time |
| IELTS Flex Advantage | $14.99 | one-time |
| Advantage mock test | $14.99 | one-time |
| IELTS Flex Gateway Upgrade | $14.99 | one-time |
| IELTS Flex Gateway | $16.00 | one-time |
| IELTS Flex Advantage | $21.00 | one-time |
| 1 Flex Lesson | $24.99 | one-time |
| IELTS Flex Gateway | $24.99 | one-time |
| IELTS Flex Advantage | $39.99 | one-time |
| IELTS Ready Premium Advantage | $69.99 | one-time |
| 3 Flex Lessons | $74.99 | one-time |
| 5 Flex Lessons | $124.99 | one-time |


### Clean Flag

[App page](https://appshunter.io/ios/app/clean-flag/id6775767537)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stern 300 | $0.99 | one-time |
| Stern 1000 | $2.00 | one-time |
| Clean Flag Pro | $3.99 | one-time |


## Frequently asked questions

### Is IELTS Flex free?

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

### Is Clean Flag free?

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

### Do IELTS Flex or Clean Flag have ads?

Neither IELTS Flex nor Clean Flag shows ads.

### Which is updated more often, IELTS Flex or Clean Flag?

IELTS Flex ships an update fortnightly, and Clean Flag daily. Most recently, IELTS Flex was updated on October 14, 2026 and Clean Flag on September 24, 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.*