# Comprehension Builder. vs 1729 SAT

The clearest difference is update cadence: 1729 SAT at every 4 weeks against Comprehension Builder.'s every 47 months. Comprehension Builder.'s advantage is iOS requirement (12.2 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Comprehension Builder. sells 3 one-off in-app purchases and 1729 SAT sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Comprehension Builder. ships an update every 47 months, 1729 SAT every 4 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Comprehension Builder. | 1729 SAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/comprehension-builder/id1238808362/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 9 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Janine Toole](https://appshunter.io/developer/839832427) | [Long Nguyen](https://appshunter.io/developer/6784286884) |

## What reviewers say

### Comprehension Builder.

[App page](https://appshunter.io/ios/app/comprehension-builder/id1238808362)

This app helps users improve reading comprehension, working memory, and the ability to answer questions about text. It features incremental learning with texts that increase in length and difficulty as skills develop, along with a reward system for motivation. Designed for learners of all ages, including those with special needs or learning English.

**Highlights:** Passage comprehension practice, Working memory development, Answering multiple-choice questions, Incremental learning levels, Reward Center for motivation, 200+ fiction and non-fiction texts, Content designed by teachers

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Two Users | $1.99 | one-time |
| All Levels | $3.99 | one-time |
| 10 Users | $3.99 | one-time |


### 1729 SAT

[App page](https://appshunter.io/ios/app/1729-sat-math-and-reading/id6784286882)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access (Monthly) | $5.99 | per month |
| Full Access (Annual) | $35.99 | per year |


## Frequently asked questions

### Is Comprehension Builder. free?

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

### Is 1729 SAT free?

1729 SAT is free to download, with in-app purchases available.

### Do Comprehension Builder. or 1729 SAT have ads?

Neither Comprehension Builder. nor 1729 SAT shows ads.

### Which is updated more often, Comprehension Builder. or 1729 SAT?

Comprehension Builder. ships an update every 47 months, and 1729 SAT every 4 weeks. Most recently, Comprehension Builder. was updated on October 16, 2026 and 1729 SAT on October 4, 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.*