# KaCa翻译, AI Translator App vs 闪念Spark

The clearest difference is iOS requirement: KaCa翻译, AI Translator App at 15.6 against 闪念Spark's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. KaCa翻译, AI Translator App sells 2 in-app purchases, starting at $5.99 per 7 days and 闪念Spark sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KaCa翻译, AI Translator App ships an update weekly, 闪念Spark every 8 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | KaCa翻译, AI Translator App | 闪念Spark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kaca-ai-translator-app/id6776530763/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 40 MB | 2 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bamboo Tech Co.,Ltd](https://appshunter.io/developer/1646272147) | [Weiqing Lin](https://appshunter.io/developer/6811265748) |

## What reviewers say

### KaCa翻译, AI Translator App

[App page](https://appshunter.io/ios/app/kaca-ai-translator-app/id6776530763)

Instantly translate on-screen text from foreign language websites, videos, games, and chats without switching apps. This AI-powered tool offers real-time translation directly on your screen, supports image translation, and recognizes over 100 languages.

**Highlights:** Real-time screen translation, Floating translation window, Image and screenshot translation, AI-powered contextual translation, Automatic language detection, Supports 100+ languages, Translate games, videos, chats, and more

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周订阅 | $5.99 | per 7 days |
| 年订阅 | $17.99 | per year |


### 闪念Spark

[App page](https://appshunter.io/ios/app/spark/id6811265746)

Capture fleeting thoughts instantly with voice or text. This app prioritizes speed and simplicity, offering offline transcription and seamless export to Obsidian. Enhance your notes with AI-powered text refinement.

**Highlights:** Instant voice recording and transcription, Offline transcription on device, Lock screen widget for quick capture, Automatic saving, Full-text search, Export to Obsidian (Markdown), AI-powered text refinement (in-app purchase)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spark Notes | $2.99 | one-time |


## Frequently asked questions

### Is KaCa翻译, AI Translator App free?

KaCa翻译, AI Translator App is free to download, with in-app purchases available.

### Is 闪念Spark free?

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

### Do KaCa翻译, AI Translator App or 闪念Spark have ads?

Neither KaCa翻译, AI Translator App nor 闪念Spark shows ads.

### Which is updated more often, KaCa翻译, AI Translator App or 闪念Spark?

KaCa翻译, AI Translator App ships an update weekly, and 闪念Spark every 8 days. Most recently, KaCa翻译, AI Translator App was updated on October 31, 2026 and 闪念Spark on October 31, 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.*