# Dotty Maths vs Rolly Vortex

The clearest difference is in-app purchases: Dotty Maths at none against Rolly Vortex's 10. Dotty Maths also leads on iOS requirement (9.1 vs 14.0). Rolly Vortex's advantage is device support. On price there is nothing between them.

Both are free to download. Rolly Vortex sells 10 one-off in-app purchases. Dotty Maths asks for nothing beyond the download.

## The numbers

| Metric | Dotty Maths | Rolly Vortex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (305K ratings)](https://appshunter.io/ios/app/rolly-vortex/id1231932402/reviews)** |
| Number of ratings | — | **305K** |
| Positive reviews | — | 52.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 4 months |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 203 MB |
| Requires iOS | **9.1** | 14.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Katherine Whitaker](https://appshunter.io/developer/1026973174) | [Voodoo](https://appshunter.io/developer/714804730) |

## What reviewers say

### Dotty Maths

[App page](https://appshunter.io/ios/app/dotty-maths-multiplication/id1071466534)

**In-app purchases:** none


### Rolly Vortex

[App page](https://appshunter.io/ios/app/rolly-vortex/id1231932402)

Navigate a rolling ball through an ever-changing obstacle course. Test your reflexes and precision to achieve high scores and compete with friends.

**Highlights:** Fast-paced rolling gameplay, Obstacle avoidance challenges, High score tracking, Challenge friends, Intuitive controls

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deer | $0.99 | one-time |
| The Panda | $0.99 | one-time |
| The Elephant | $0.99 | one-time |
| The Giraffe | $0.99 | one-time |
| The Lion | $0.99 | one-time |
| The Lioness | $0.99 | one-time |
| The Rhino | $0.99 | one-time |
| The Zebra | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Unlock The Zoo Characters | $4.99 | one-time |

**What reviewers like**

- 🚀 Addictive and fun gameplay
- 👍 Relaxing and stress-relieving
- 🎨 Customizable balls and vortexes

**What reviewers complain about**

- 🔍 Too many ads and pop-ups
- 🐛 Frequent glitches and crashes
- 🔋 Vibration issues causing distraction
- 🤯 Frustratingly difficult at times

**Reported bugs**

- Game freezing and crashing
- Leaderboard and progress not saving properly
- Ads playing even after paying to remove them

**Requested features**

- More challenging levels and modes
- Ability to turn off vibrations completely
- Offline play without ads
- Additional customization options


## Frequently asked questions

### Is Dotty Maths free?

Dotty Maths is free to download, with no in-app purchases.

### Is Rolly Vortex free?

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

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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.*