# The Jerks vs RYUKIN

The clearest difference is price: The Jerks at Free against RYUKIN's $3.49. The Jerks also leads on in-app purchases (none vs 10) and update cadence (every 2 days vs every 8 days). RYUKIN's advantage is rating (4.9 vs 4.2) and ratings volume (62 vs 5). On ads, device support and iOS requirement there is nothing between them.

The Jerks is free to download; RYUKIN costs $3.49 up front. RYUKIN sells 10 one-off in-app purchases. The Jerks asks for nothing beyond the download.

RYUKIN holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: RYUKIN has 62 ratings behind it against 5, so its average is the more settled of the two.

The Jerks ships an update every 2 days, RYUKIN every 8 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | The Jerks | RYUKIN |
| --- | --- | --- |
| Price | **Free** | $3.49 |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/the-jerks/id1641004380/reviews) | **[4.9 (62 ratings)](https://appshunter.io/ios/app/ryukin/id6471839445/reviews)** |
| Number of ratings | 5 | **62** |
| Positive reviews | — | 94.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 8 days |
| Monetization | **Free** | Paid |
| Size | 60 MB | 229 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IORAMA AB](https://appshunter.io/developer/933451747) | [Masataka Hakozaki](https://appshunter.io/developer/323346554) |

## What reviewers say

### The Jerks

[App page](https://appshunter.io/ios/app/the-jerks/id1641004380)

Experience a live motion capture experiment with quirky characters. Watch as they hilariously attempt to replicate human movements in entertaining ways.

**Highlights:** Live motion capture, Jerky character animations, Mimics human movements, Entertaining experiments, Suitable for all ages

**In-app purchases:** none


### RYUKIN

[App page](https://appshunter.io/ios/app/ryukin/id6471839445)

Experience the serene beauty of a virtual goldfish aquarium. Customize your tank, interact with the fish, and enjoy soothing sounds. Features a special mode for young children and a sleep timer for relaxation.

**Highlights:** Interactive goldfish that respond to touch, Customizable tank shape and background, Soothing water sounds and visuals, Cat & Baby Mode for safe play, Sleep timer for bedtime, Clock and date display

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ROBO FISH 02 | $1.99 | one-time |
| GHOST TRANSLUCENT | $1.99 | one-time |
| GHOST BLACK | $1.99 | one-time |
| RED RYUKIN | $1.99 | one-time |
| RED-WHITE RYUKIN | $1.99 | one-time |
| CALICO RED/WHITE/BLACK | $1.99 | one-time |
| YELLOW GOLD RYUKIN | $1.99 | one-time |
| CALICO KITTY FISH | $1.99 | one-time |
| SKELETON FISH | $1.99 | one-time |
| PANDA TELESCOPE | $1.99 | one-time |

**What reviewers like**

- 💎 Gorgeous and lifelike fish
- 🎨 Beautiful and customizable environments
- 🎶 Soothing water sounds
- 🕰️ Useful clock feature
- 👍 Immersive and relaxing experience

**What reviewers complain about**

- 🔋 High battery consumption on max settings
- 💰 Additional fish require paid purchases
- 🌱 Lack of plant/natural decor options
- 🐟 Limited variety of standard goldfish

**Reported bugs**

- Occasional crashing on high-end devices

**Requested features**

- Ability to change fish colors
- Add more fish species (e.g. bettas, tetras)
- Implement fish breeding/growth mode
- Allow customizing fish placement in tank
- Add desktop/widget mode for always-on display


## Frequently asked questions

### Is The Jerks free?

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

### Is RYUKIN free?

RYUKIN costs $3.49, and also offers in-app purchases.

### Which has better reviews, The Jerks or RYUKIN?

RYUKIN is rated higher. The Jerks averages 4.2 out of 5 from 5 ratings, while RYUKIN averages 4.9 from 62 ratings.

### Do The Jerks or RYUKIN have ads?

Neither The Jerks nor RYUKIN shows ads.

### Which is updated more often, The Jerks or RYUKIN?

The Jerks ships an update every 2 days, and RYUKIN every 8 days. Most recently, The Jerks was updated on November 3, 2026 and RYUKIN on November 4, 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.*