# Spark vs Science Libs

The clearest difference is ads: Science Libs at none against Spark's shown. Science Libs also leads on rating (5.0 vs 4.8) and iOS requirement (13.4 vs 16.0). Spark's advantage is ratings volume (2.7K vs 2) and chart position (#145 vs unranked). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Spark sells 10 in-app purchases, starting at $2.99 per month and Science Libs sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Science Libs holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spark has 2.7K ratings behind it against 2, so its average is the more settled of the two.

Spark ships an update weekly, Science Libs every 9 days. The most recent releases landed on September 27, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Spark | Science Libs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (2.7K ratings)](https://appshunter.io/ios/app/spark-daily-learning-puzzles/id6744417372/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/science-libs/id6748157618/reviews)** |
| Number of ratings | **2.7K** | 2 |
| Positive reviews | 92.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#145** | — |
| Size | 145 MB | 41 MB |
| Requires iOS | 16.0 | **13.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Mind Company](https://appshunter.io/developer/875063459) | [Aaran Solh](https://appshunter.io/developer/1731393478) |

## What reviewers say

### Spark

[App page](https://appshunter.io/ios/app/spark-daily-learning-puzzles/id6744417372)

**Currently charting:** #145 Top Grossing · Education, #178 Top Free · Education (US App Store)

Engage with daily learning puzzles centered around a single theme. Explore history, science, and pop culture through four unique, human-crafted games designed for discovery and fun.

**Highlights:** Daily themed puzzles, Four unique game modes, Human-crafted puzzles, Explore history, science, and pop culture, Archive of past puzzles, No timers or tests

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spark Plus | $2.99 | per month |
| Spark Plus | $4.99 | per month |
| Spark+ | $9.99 | per month |
| Spark+ | $39.99 | per year |
| Spark Plus | $39.99 | per year |
| Spark Plus | $39.99 | per year |
| Spark Plus | $39.99 | per year |
| Spark+ | $59.99 | per year |
| Spark+ | $59.99 | per year |
| Spark+ | $79.99 | per year |

**What reviewers like**

- 🚀 Fun and free way to fight brainrot
- 👍 Engaging and educational puzzles
- 💡 Innovative and interesting themes
- 👍 Clean visuals and smooth design
- 👍 Balanced challenge and learning

**What reviewers complain about**

- 🐛 Potential inaccurate information in puzzles

**Reported bugs**

- AT&T blocking the website as potentially malicious

**Requested features**

- More games and puzzles
- Dark mode option


### Science Libs

[App page](https://appshunter.io/ios/app/science-libs/id6748157618)

This app makes learning science fun for kids aged 6-12 through Mad Libs-style stories. Children fill in blanks to create hilarious tales, then read engaging articles explaining the real science. It encourages vocabulary, creativity, and curiosity in a safe, ad-free environment.

**Highlights:** Mad Libs-style science stories, Vocabulary and creativity building, Engaging science articles, Reflective questions for discussion, Kid-friendly design, Optional social sharing with parental controls, Ad-free environment

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase all Science Libs | $2.99 | one-time |
| Workbook download | $2.99 | one-time |
| Category Purchase | $4.99 | one-time |
| Purchase Four Categories | $9.99 | one-time |


## Frequently asked questions

### Is Spark free?

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

### Is Science Libs free?

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

### Which has better reviews, Spark or Science Libs?

Science Libs is rated higher. Spark averages 4.8 out of 5 from 2.7K ratings, while Science Libs averages 5.0 from 2 ratings.

### Do Spark or Science Libs have ads?

Spark shows ads; Science Libs does not.

### Which is updated more often, Spark or Science Libs?

Spark ships an update weekly, and Science Libs every 9 days. Most recently, Spark was updated on September 27, 2026 and Science Libs on September 18, 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.*