# Mechanical Clock 3D vs Rivers 4K

The clearest difference is in-app purchases: Mechanical Clock 3D at none against Rivers 4K's 2. Mechanical Clock 3D also leads on iOS requirement (8.0 vs 15.0). Rivers 4K's advantage is update cadence (every 3 months vs every 37 months). On price, ads and device support there is nothing between them.

Mechanical Clock 3D costs $0.99 and Rivers 4K $0.99 up front. Rivers 4K sells 2 in-app purchases, starting at $0.99 per month. Mechanical Clock 3D asks for nothing beyond the download.

Mechanical Clock 3D ships an update every 37 months, Rivers 4K every 3 months. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Mechanical Clock 3D | Rivers 4K |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.8 (259 ratings)](https://appshunter.io/ios/app/mechanical-clock-3d/id458575545/reviews)** | — |
| Number of ratings | **259** | — |
| Positive reviews | 69.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 26 MB | 60 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Igor Panichev](https://appshunter.io/developer/435142557) | [KISSAPP, S.L.](https://appshunter.io/developer/552812711) |

## What reviewers say

### Mechanical Clock 3D

[App page](https://appshunter.io/ios/app/mechanical-clock-3d/id458575545)

Explore the intricate workings of a mechanical clock with realistic 3D graphics. Witness its internal gears and mechanisms in motion, and enjoy hourly chimes and authentic tick-tock sounds. Customize the visual experience with two distinct color schemes.

**Highlights:** High-quality 3D graphics, Shows current time, Hourly and half-hourly chimes, Tick-tock sound effect, Two color schemes

**In-app purchases:** none

**What reviewers like**

- ✨ Visually stunning design
- 🎵 Excellent sound quality
- ⚙️ Intricate mechanical details
- 🕰️ Accurate timepiece
- 🔊 Selective volume control

**What reviewers complain about**

- ⚠️ Hands hard to see
- 🤔 Limited functionality
- 🚫 No alarm function
- 3️⃣ Not truly 3D
- 📱 Not ideal for mobile

**Reported bugs**

- Settings collapsing
- App crashes constantly on iPhone 4s
- App freezes on startup
- App stays black on iPhone 5
- Does not chime when not on screen

**Requested features**

- Add Apple Watch support
- Add tourbillon function
- Allow background sound playback
- Add alarm feature
- Make hands more visible (glow, contrast, closed face)


### Rivers 4K

[App page](https://appshunter.io/ios/app/rivers-4k/id6472048082)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rivers Full Version | $0.99 | per month |
| Rivers Full Version | $8.99 | per year |


## Frequently asked questions

### Is Mechanical Clock 3D free?

Mechanical Clock 3D costs $0.99, with no in-app purchases.

### Is Rivers 4K free?

Rivers 4K costs $0.99, and also offers in-app purchases.

### Do Mechanical Clock 3D or Rivers 4K have ads?

Neither Mechanical Clock 3D nor Rivers 4K shows ads.

### Which is updated more often, Mechanical Clock 3D or Rivers 4K?

Mechanical Clock 3D ships an update every 37 months, and Rivers 4K every 3 months. Most recently, Mechanical Clock 3D was updated on October 16, 2026 and Rivers 4K on October 1, 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.*