# Reading for Details vs Comprehension Builder

The clearest difference is update cadence: Reading for Details at every 8 months against Comprehension Builder's every 40 months. Reading for Details 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 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 ships an update every 8 months, Comprehension Builder every 40 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Reading for Details | Comprehension Builder |
| --- | --- | --- |
| Price | **$3.99** | $7.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 40 months |
| Size | 7 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

[App page](https://appshunter.io/ios/app/reading-for-details-iii/id880261788)

**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 free?

Reading for Details 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 or Comprehension Builder have ads?

Neither Reading for Details nor Comprehension Builder shows ads.

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

Reading for Details ships an update every 8 months, and Comprehension Builder every 40 months. Most recently, Reading for Details was updated on November 11, 2026 and Comprehension Builder on November 8, 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.*