# Lett vs TrendAI

The clearest difference is update cadence: Lett at every 5 days against TrendAI's every 4 months. TrendAI's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Lett sells 7 in-app purchases, starting at $1.99 per 7 days and TrendAI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Lett ships an update every 5 days, TrendAI every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Lett | TrendAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/lett-instagram-carousel-post/id6752947168/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 107 MB | 62 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Moshkov](https://appshunter.io/developer/1500199012) | [Alphaved Private Limited](https://appshunter.io/developer/1473806249) |

## What reviewers say

### Lett

[App page](https://appshunter.io/ios/app/lett-instagram-carousel-post/id6752947168)

Create engaging Instagram carousel posts by adding long text directly onto your photos and videos. The app automatically splits your story across slides, ensuring your message is always clear and perfectly aligned.

**Highlights:** Add long text to carousel posts, Place text on photos and videos, Automatic text splitting across slides, Smart backdrop for text readability, Precise text alignment, Fast and seamless creation

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lett Premium: Text Carousels | $1.99 | per 7 days |
| Lett Premium: Text Carousels | $2.99 | per 7 days |
| Lett Premium: Text Carousels | $3.99 | per month |
| Lett Premium: Text Carousels | $5.99 | per month |
| Lett Premium: Text Carousels | $17.99 | per 3 months |
| Lett Premium IG Text Carousel | $29.99 | per year |
| Lett Premium: Text Carousels | $49.99 | per year |


### TrendAI

[App page](https://appshunter.io/ios/app/trendai-image-generator/id6764760077)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Monthly Pro | $6.99 | per month |


## Frequently asked questions

### Is Lett free?

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

### Is TrendAI free?

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

### Do Lett or TrendAI have ads?

Neither Lett nor TrendAI shows ads.

### Which is updated more often, Lett or TrendAI?

Lett ships an update every 5 days, and TrendAI every 4 months. Most recently, Lett was updated on October 24, 2026 and TrendAI on October 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.*