# Sketch Viewer UP vs Cooing

The clearest difference is rating: Cooing at 5.0 against Sketch Viewer UP's 1.6. Sketch Viewer UP's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (10 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sketch Viewer UP sells 3 one-off in-app purchases and Cooing sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Cooing holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: Sketch Viewer UP has 10 ratings behind it against 1, so its average is the more settled of the two.

Sketch Viewer UP ships an update every 8 days, Cooing fortnightly. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sketch Viewer UP | Cooing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (10 ratings)](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cooing/id6504428228/reviews)** |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 40 MB | 9 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [骁宇 陈](https://appshunter.io/developer/1836429187) | [DigitsFn, LLC](https://appshunter.io/developer/1676362730) |

## What reviewers say

### Sketch Viewer UP

[App page](https://appshunter.io/ios/app/sketch-viewer-up-model-browser/id6447847214)

This application allows users to import and view 3D models from various professional design software. It supports a wide range of file formats, making it convenient for designers, engineers, and students to access and analyze 3D drawings on their mobile devices.

**Highlights:** Import and view 3D drawings, Supports multiple professional 3D file formats, Collection of standard industry libraries, Mobile 3D viewing software, Professional CAD drawing and modeling

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一季度会员 | $9.99 | one-time |
| 一年会员 | $24.99 | one-time |
| 永久会员 | $29.99 | one-time |


### Cooing

[App page](https://appshunter.io/ios/app/cooing/id6504428228)

This app helps you organize your tasks and express yourself through writing. It combines to-do lists with journaling features, allowing you to add text, photos, and moods to your entries. Secure your data with advanced encryption and biometric locks.

**Highlights:** Task organization with lists and priorities, Journaling with text, photos, and mood tagging, Smart reminders and repeating schedules, End-to-end encryption for data security, Biometric login (Face ID/Touch ID/Passcode), Subtasks for breaking down goals

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is Sketch Viewer UP free?

Sketch Viewer UP is free to download, with in-app purchases available.

### Is Cooing free?

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

### Which has better reviews, Sketch Viewer UP or Cooing?

Cooing is rated higher. Sketch Viewer UP averages 1.6 out of 5 from 10 ratings, while Cooing averages 5.0 from 1 ratings.

### Do Sketch Viewer UP or Cooing have ads?

Neither Sketch Viewer UP nor Cooing shows ads.

### Which is updated more often, Sketch Viewer UP or Cooing?

Sketch Viewer UP ships an update every 8 days, and Cooing fortnightly. Most recently, Sketch Viewer UP was updated on October 22, 2026 and Cooing on October 14, 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.*