# Spark Reading for Kids vs Strings Learning Lab

Spark Reading for Kids and Strings Learning Lab are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Spark Reading for Kids sells 6 in-app purchases, starting at $3.99 per month and Strings Learning Lab sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Spark Reading for Kids | Strings Learning Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (7.9K ratings)](https://appshunter.io/ios/app/spark-reading-for-kids/id739985631/reviews)** | — |
| Number of ratings | **7.9K** | — |
| Positive reviews | 77.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 350 MB | 146 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peekaboo Studios LLC](https://appshunter.io/developer/375031868) | [Online Learning](https://appshunter.io/developer/1790866777) |

## What reviewers say

### Spark Reading for Kids

[App page](https://appshunter.io/ios/app/spark-reading-for-kids/id739985631)

This app offers a digital library of age-appropriate books for children in grades 2-8 to improve reading skills. It features interactive comprehension questions, progress tracking, and stories aligned with school curricula. Users can listen to stories and follow along, making reading practice engaging and accessible.

**Highlights:** Age-appropriate books (grades 2-8), Interactive comprehension questions, Listen and follow along feature, Progress and score tracking, Aligned with school curriculum, Offline access

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $3.99 | per month |
| Monthly Subscription | $3.99 | per month |
| All Access | $6.99 | per 3 months |
| Annual Subscription | $23.99 | per year |
| All Access | $23.99 | per year |
| All Access | $23.99 | per year |

**What reviewers like**

- 👍 Helpful for reading comprehension
- 🚀 Engaging and interactive
- 💡 Customizable reading levels
- 🤩 Fun and educational

**What reviewers complain about**

- 💰 Paid content/subscription required
- 🐛 Occasional crashes and bugs
- 🤔 Limited content for higher grade levels
- 🤖 Robotic/monotonous reading voices

**Reported bugs**

- Login/account issues
- Compatibility problems on older devices
- Syncing issues across multiple devices

**Requested features**

- More free content and books
- Ability to highlight/take notes
- Customizable reading difficulty
- Support for dyslexic readers


### Strings Learning Lab

[App page](https://appshunter.io/ios/app/strings-learning-lab/id6752326257)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - AT | $34.99 | one-time |
| Package - AY | $39.99 | one-time |
| Package - BB | $39.99 | one-time |
| Package - BC | $39.99 | one-time |
| Package - BD | $39.99 | one-time |
| Package - AZ | $39.99 | one-time |
| Package - BE | $44.99 | one-time |
| Package - BG | $49.99 | one-time |
| Package - BF | $49.99 | one-time |
| Package - BH | $49.99 | one-time |


## Frequently asked questions

### Is Spark Reading for Kids free?

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

### Is Strings Learning Lab free?

Strings Learning Lab is free to download, with in-app purchases available.

### Do Spark Reading for Kids or Strings Learning Lab have ads?

Neither Spark Reading for Kids nor Strings Learning Lab shows ads.

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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.*