# Reading for Details II vs Comprehension Builder

The clearest difference is update cadence: Reading for Details II at every 11 months against Comprehension Builder's every 40 months. Reading for Details II also leads on price ($3.99 vs $7.99) and iOS requirement (9.0 vs 12.2). On ads, in-app purchases and device support there is nothing between them.

Reading for Details II costs $3.99 and Comprehension Builder $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Reading for Details II ships an update every 11 months, Comprehension Builder every 40 months. The most recent releases landed on October 17, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Reading for Details II | Comprehension Builder |
| --- | --- | --- |
| Price | **$3.99** | $7.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 40 months |
| Size | 6 MB | 50 MB |
| Requires iOS | **9.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Learning Fundamentals, Inc.](https://appshunter.io/developer/454061076) | [Janine Toole](https://appshunter.io/developer/839832427) |

## What reviewers say

### Reading for Details II

[App page](https://appshunter.io/ios/app/reading-for-details-ii/id756969003)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Comprehension Builder

[App page](https://appshunter.io/ios/app/comprehension-builder/id1238803041)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reading for Details II free?

Reading for Details II costs $3.99, with no in-app purchases.

### Is Comprehension Builder free?

Comprehension Builder costs $7.99, with no in-app purchases.

### Do Reading for Details II or Comprehension Builder have ads?

Neither Reading for Details II nor Comprehension Builder shows ads.

### Which is updated more often, Reading for Details II or Comprehension Builder?

Reading for Details II ships an update every 11 months, and Comprehension Builder every 40 months. Most recently, Reading for Details II was updated on October 17, 2026 and Comprehension Builder on October 27, 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.*