# Deer Studio vs Fluo

The clearest difference is in-app purchases: Deer Studio at none against Fluo's 2. Fluo's advantage is update cadence (every 4 days vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Fluo sells 2 in-app purchases, starting at $9.99 per month. Deer Studio asks for nothing beyond the download.

Deer Studio ships an update every 3 weeks, Fluo every 4 days. The most recent releases landed on October 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Deer Studio | Fluo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fluo-language-learning/id6759833037/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 90 MB | 54 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [SuperInk](https://appshunter.io/developer/1630108477) | [Fluo Inc](https://appshunter.io/developer/1881057907) |

## What reviewers say

### Deer Studio

[App page](https://appshunter.io/ios/app/deer-studio/id6479632036)

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

**In-app purchases:** none


### Fluo

[App page](https://appshunter.io/ios/app/fluo-language-learning/id6759833037)

Master Chinese vocabulary with AI-powered sentences and spaced repetition. Learn words that matter to you through personalized reviews and interactive exercises. Get instant explanations and track your progress to build lasting language skills.

**Highlights:** AI-generated personalized sentences, Spaced repetition for memory retention, Topic-based vocabulary learning, Active and passive recall modes, Instant grammar and usage explanations, Translate and learn from any text, Progress tracking and daily goals

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fluo Premium Monthly Subscription | $9.99 | per month |
| Fluo Premium Annual Subscription | $59.99 | per year |


## Frequently asked questions

### Is Deer Studio free?

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

### Is Fluo free?

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

### Do Deer Studio or Fluo have ads?

Neither Deer Studio nor Fluo shows ads.

### Which is updated more often, Deer Studio or Fluo?

Deer Studio ships an update every 3 weeks, and Fluo every 4 days. Most recently, Deer Studio was updated on October 12, 2026 and Fluo on September 28, 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.*