# captions.ai vs SunBloc

The clearest difference is in-app purchases: SunBloc at none against captions.ai's 3. SunBloc also leads on update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. captions.ai sells 3 in-app purchases, starting at $2.99 per 7 days. SunBloc asks for nothing beyond the download.

captions.ai ships an update every 3 weeks, SunBloc every 5 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | captions.ai | SunBloc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/captionsai-caption-generator/id6499187142/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 73 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Tiny Leo Co., Ltd](https://appshunter.io/developer/1660777736) | [William Silwera](https://appshunter.io/developer/1834004862) |

## What reviewers say

### captions.ai

[App page](https://appshunter.io/ios/app/captionsai-caption-generator/id6499187142)

This AI-powered tool helps you craft engaging captions for your photos. Customize length, tone, and audience to personalize your posts and enhance social media engagement. Effortlessly generate and share captions for any occasion.

**Highlights:** AI-powered caption generation, Multi-photo upload, Customizable caption length and tone, Audience targeting, Emoji integration, Instant social media sharing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Weekly Trial | $2.99 | per 7 days |
| Yearly Premium | $29.99 | per year |


### SunBloc

[App page](https://appshunter.io/ios/app/sunbloc/id6751211362)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is captions.ai free?

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

### Is SunBloc free?

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

### Do captions.ai or SunBloc have ads?

Both captions.ai and SunBloc show ads.

### Which is updated more often, captions.ai or SunBloc?

captions.ai ships an update every 3 weeks, and SunBloc every 5 days. Most recently, captions.ai was updated on October 15, 2026 and SunBloc on October 7, 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.*