# AI Caption vs OneDay

The clearest difference is update cadence: AI Caption at fortnightly against OneDay's every 4 months. AI Caption also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. AI Caption sells 6 in-app purchases, starting at $6.99 per 7 days and OneDay sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

AI Caption ships an update fortnightly, OneDay every 4 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AI Caption | OneDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-caption-image-caption/id6475199122/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 122 MB | 7 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chuong Le](https://appshunter.io/developer/1602451499) | [文杰 王](https://appshunter.io/developer/1861740986) |

## What reviewers say

### AI Caption

[App page](https://appshunter.io/ios/app/ai-caption-image-caption/id6475199122)

Instantly generate creative and personalized captions for your photos using AI. Choose from multiple tones, styles, and genres to make your social media posts stand out. Customize text directly on images and share effortlessly to various platforms.

**Highlights:** Instant AI-generated captions, Multiple tones and styles, Multilingual caption support, Genre-specific caption options, Caption on image customization, One-tap social media sharing

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Plan | $6.99 | per 7 days |
| Monthly Premium Plan | $19.99 | per month |
| Annual Premium Plan | $199.99 | per year |
| Extra Credit 1 | $0.99 | one-time |
| Extra Credit 2 | $1.99 | one-time |
| Extra Credit 3 | $2.99 | one-time |


### OneDay

[App page](https://appshunter.io/ios/app/oneday-cost-per-use-tracker/id6757146011)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Items | $1.00 | one-time |


## Frequently asked questions

### Is AI Caption free?

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

### Is OneDay free?

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

### Do AI Caption or OneDay have ads?

Neither AI Caption nor OneDay shows ads.

### Which is updated more often, AI Caption or OneDay?

AI Caption ships an update fortnightly, and OneDay every 4 months. Most recently, AI Caption was updated on October 24, 2026 and OneDay on October 25, 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.*