# Kalley's Machine Plus Cats vs Snap Science

The clearest difference is in-app purchases: Kalley's Machine Plus Cats at none against Snap Science's 1. Kalley's Machine Plus Cats also leads on ratings volume (38 vs 3) and iOS requirement (11.0 vs 17.6). Snap Science's advantage is rating (5.0 vs 4.7) and update cadence (every 10 days vs every 5 weeks). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Snap Science sells 1 in-app purchase, starting at $3.99 per month. Kalley's Machine Plus Cats asks for nothing beyond the download.

Snap Science holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Kalley's Machine Plus Cats has 38 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 93% of Kalley's Machine Plus Cats's written reviews are positive against 100% of Snap Science's.

Kalley's Machine Plus Cats ships an update every 5 weeks, Snap Science every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Kalley's Machine Plus Cats | Snap Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (38 ratings)](https://appshunter.io/ios/app/kalleys-machine-plus-cats/id905722643/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/snap-science-learn-anything/id6739454340/reviews)** |
| Number of ratings | **38** | 3 |
| Positive reviews | 92.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 35 MB | 29 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RocketWagon, LLC](https://appshunter.io/developer/905722646) | [Tappity, Inc.](https://appshunter.io/developer/669186592) |

## What reviewers say

### Kalley's Machine Plus Cats

[App page](https://appshunter.io/ios/app/kalleys-machine-plus-cats/id905722643)

An interactive storybook where a child's imaginative drawing of a machine comes to life. Explore playful interactions, help the machine perform various actions, and engage with whimsical cats. Features include read-to-me and touch-to-read options for young readers.

**Highlights:** Interactive machine play, Smash, inflate, shrink, and mold objects, Interact with cats, Read-to-me narration, Touch-to-read word highlighting, Child-friendly controls

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Highly engaging and fun
- 🎨 Creative and imaginative
- 📚 Great for reading skills
- 👨‍👩‍👧‍👦 Family-friendly entertainment
- 💡 Educational value (science, cause/effect)

**What reviewers complain about**

- 👎 Limited content/replayability
- 🤏 Frustrating swipe gestures
- 💰 Perceived as not worth the price

**Reported bugs**

- Cannot get past the first page
- No sound at all
- Navigation issues on older devices

**Requested features**

- Disable swipe feature
- More interactive elements on the last page
- More content/sequels/series
- More interaction with cats
- More interactive elements in general


### Snap Science

[App page](https://appshunter.io/ios/app/snap-science-learn-anything/id6739454340)

This app uses an AI-powered science buddy to answer children's questions and identify objects from photos. It encourages daily curiosity with fun facts and is built by science education experts.

**Highlights:** AI science buddy answers questions, Identify objects from photos, Safe, kid-friendly AI, Encourage daily curiosity, Built by science education experts

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Explorer Membership | $3.99 | per month |


## Frequently asked questions

### Is Kalley's Machine Plus Cats free?

Kalley's Machine Plus Cats is free to download, with no in-app purchases.

### Is Snap Science free?

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

### Which has better reviews, Kalley's Machine Plus Cats or Snap Science?

Snap Science is rated higher. Kalley's Machine Plus Cats averages 4.7 out of 5 from 38 ratings, while Snap Science averages 5.0 from 3 ratings.

### Do Kalley's Machine Plus Cats or Snap Science have ads?

Neither Kalley's Machine Plus Cats nor Snap Science shows ads.

### Which is updated more often, Kalley's Machine Plus Cats or Snap Science?

Kalley's Machine Plus Cats ships an update every 5 weeks, and Snap Science every 10 days. Most recently, Kalley's Machine Plus Cats was updated on October 24, 2026 and Snap Science on October 24, 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.*