# Voxly vs Grumpy Old Tech Robot Control

The clearest difference is in-app purchases: Grumpy Old Tech Robot Control at none against Voxly's 11. Grumpy Old Tech Robot Control also leads on ads (none vs shown) and iOS requirement (10.3 vs 12.0). Voxly's advantage is update cadence (every 5 weeks vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Voxly sells 11 in-app purchases, starting at $7.99 per month. Grumpy Old Tech Robot Control asks for nothing beyond the download.

Voxly ships an update every 5 weeks, Grumpy Old Tech Robot Control every 9 months. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Voxly | Grumpy Old Tech Robot Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (29K ratings)](https://appshunter.io/ios/app/voxly-color-by-number/id1326107151/reviews)** | — |
| Number of ratings | **29K** | — |
| Positive reviews | 77.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 266 MB | 14 MB |
| Requires iOS | 12.0 | **10.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [byss mobile](https://appshunter.io/developer/327447624) | [Inzant Australia PTY LTD](https://appshunter.io/developer/1491875116) |

## What reviewers say

### Voxly

[App page](https://appshunter.io/ios/app/voxly-color-by-number/id1326107151)

Explore a magical world of colors with this 3D coloring game. Relax and get creative by coloring numerous pictures by number. Share your creations with a vibrant community and enjoy offline play.

**Highlights:** 3D coloring by number, Vast library of pictures, Offline play supported, Share creations with community, User-friendly interface, Regularly updated content

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Voxly: Monthly Access | $7.99 | per month |
| 3D color by number Weekly | $9.99 | per 7 days |
| 3D color by number Monthly | $19.99 | per month |
| 3D color by number Yearly | $29.99 | per year |
| Voxly: One Year Access | $29.99 | per year |
| Super Spin! | $0.99 | one-time |
| Small Pack of Gems | $1.99 | one-time |
| Special Offer | $2.99 | one-time |
| Medium Pack of Gems | $4.99 | one-time |
| Unlock All Premium Models | $4.99 | one-time |
| Big Pack of Gems | $7.99 | one-time |

**What reviewers like**

- 👍 Fun and therapeutic
- 🎨 Easy and smooth coloring experience
- 🎨 Vibrant colors
- 🎨 Satisfying to complete pictures

**What reviewers complain about**

- 💰 Many pictures locked behind paywall
- 📺 Too many ads interrupting gameplay
- 🐛 Occasional glitches and bugs
- 🔒 Limited free content

**Reported bugs**

- Numbers showing as complete before all areas are colored
- Daily pictures already colored when opened
- App crashing or freezing on launch
- Inconsistent experience across devices

**Requested features**

- Ability to rotate and view 3D models from all angles
- More free pictures and content
- Reduced ad frequency or ad-free option
- Lower subscription pricing


### Grumpy Old Tech Robot Control

[App page](https://appshunter.io/ios/app/grumpy-old-tech-robot-control/id1379828627)

**In-app purchases:** none


## Frequently asked questions

### Is Voxly free?

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

### Is Grumpy Old Tech Robot Control free?

Grumpy Old Tech Robot Control is free to download, with no in-app purchases.

### Do Voxly or Grumpy Old Tech Robot Control have ads?

Voxly shows ads; Grumpy Old Tech Robot Control does not.

### Which is updated more often, Voxly or Grumpy Old Tech Robot Control?

Voxly ships an update every 5 weeks, and Grumpy Old Tech Robot Control every 9 months. Most recently, Voxly was updated on October 28, 2026 and Grumpy Old Tech Robot Control on October 26, 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.*