# SENTENCE READING MAGIC 2 vs Stack Up

The clearest difference is rating: Stack Up at 5.0 against SENTENCE READING MAGIC 2's 3.9. Stack Up also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 69 months). SENTENCE READING MAGIC 2's advantage is device support (3 vs 1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. SENTENCE READING MAGIC 2 sells 1 one-off in-app purchase. Stack Up asks for nothing beyond the download.

Stack Up holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 12 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

SENTENCE READING MAGIC 2 ships an update every 69 months, Stack Up every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SENTENCE READING MAGIC 2 | Stack Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (12 ratings)](https://appshunter.io/ios/app/sentence-reading-magic-2/id781732134/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/stack-up-stack-items-bottom-up-to-build-a-tower/id1135865797/reviews)** |
| Number of ratings | **12** | 6 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 69 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 163 MB | 65 MB |
| Requires iOS | 15 | **7.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [PRESCHOOL UNIVERSITY](https://appshunter.io/developer/404048727) | [STEP BY STEP](https://appshunter.io/developer/961412234) |

## What reviewers say

### SENTENCE READING MAGIC 2

[App page](https://appshunter.io/ios/app/sentence-reading-magic-2/id781732134)

This app helps emerging readers transition from single words to reading full sentences. It uses a Science of Reading approach with interactive games to build foundational literacy skills. The full version offers an extensive library of sentences and personalized learning options.

**Highlights:** Build sentence reading skills, Based on Reading Science, Interactive sentence games, High-frequency word focus, Progressive learning with multisyllable words, Extensive sentence library (full version)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deluxe Upgrade | $2.99 | one-time |


### Stack Up

[App page](https://appshunter.io/ios/app/stack-up-stack-items-bottom-up-to-build-a-tower/id1135865797)

This educational app helps children aged 2.5 and up learn to arrange items by width. It fosters visual perception and primary math skills through engaging, simple activities. Designed for young learners, it avoids distractions and offers progress tracking for educators.

**Highlights:** Arranging items by width, Develops visual perception, Teaches primary math concepts, Progress tracking for educators, Safe for children, Simple and intuitive design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SENTENCE READING MAGIC 2 free?

SENTENCE READING MAGIC 2 is free to download, with in-app purchases available.

### Is Stack Up free?

Stack Up is free to download, with no in-app purchases.

### Which has better reviews, SENTENCE READING MAGIC 2 or Stack Up?

Stack Up is rated higher. SENTENCE READING MAGIC 2 averages 3.9 out of 5 from 12 ratings, while Stack Up averages 5.0 from 6 ratings.

### Do SENTENCE READING MAGIC 2 or Stack Up have ads?

Neither SENTENCE READING MAGIC 2 nor Stack Up shows ads.

### Which is updated more often, SENTENCE READING MAGIC 2 or Stack Up?

SENTENCE READING MAGIC 2 ships an update every 69 months, and Stack Up every 2 months. Most recently, SENTENCE READING MAGIC 2 was updated on November 1, 2026 and Stack Up on November 6, 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.*