# Knightlite vs ReadyLine Apparatus

The clearest difference is price: Knightlite at Free against ReadyLine Apparatus's $4.99. ReadyLine Apparatus's advantage is in-app purchases (none vs 10). On update cadence, ads, device support and iOS requirement there is nothing between them.

Knightlite is free to download; ReadyLine Apparatus costs $4.99 up front. Knightlite sells 10 one-off in-app purchases. ReadyLine Apparatus asks for nothing beyond the download.

Knightlite ships an update every 9 days, ReadyLine Apparatus every 6 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Knightlite | ReadyLine Apparatus |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (19 ratings)](https://appshunter.io/ios/app/knightlite/id6742388561/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Monetization | Free | — |
| Size | 81 MB | 2 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Knightlite Software](https://appshunter.io/developer/1792829603) | [ReadyLine Response Solutions LLC](https://appshunter.io/developer/6804051765) |

## What reviewers say

### Knightlite

[App page](https://appshunter.io/ios/app/knightlite/id6742388561)

This app offers a comprehensive study system for firefighters preparing for exams. It features an extensive question bank, voice-assisted learning, detailed notes, and customizable tests to help users master material and identify weaknesses.

**Highlights:** Extensive question bank by chapter, Voice Assist reads questions aloud, Detailed notes with page references, Customizable randomized tests, Hands-free review mode, Vocabulary definitions, Tracks incorrectly answered questions

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FD Incident Safety 3.0 | $44.99 | one-time |
| F/O Principles And Practice 4 | $44.99 | one-time |
| Building Construction 5.0 | $49.99 | one-time |
| Company Officer 7.0 | $49.99 | one-time |
| F/O Principles and Practice 5 | $49.99 | one-time |
| Company Officer 6.0 | $49.99 | one-time |
| Brannigan's Building Con. 6.0 | $49.99 | one-time |
| F/O Handbook of Tactics 5.0 | $49.99 | one-time |
| Pumping & Aerial Apparatus D/O 4.0 | $59.99 | one-time |
| Pumping & Aerial Apparatus 3.0 | $59.99 | one-time |


### ReadyLine Apparatus

[App page](https://appshunter.io/ios/app/readyline-apparatus/id6804540401)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Knightlite free?

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

### Is ReadyLine Apparatus free?

ReadyLine Apparatus costs $4.99, with no in-app purchases.

### Do Knightlite or ReadyLine Apparatus have ads?

Neither Knightlite nor ReadyLine Apparatus shows ads.

### Which is updated more often, Knightlite or ReadyLine Apparatus?

Knightlite ships an update every 9 days, and ReadyLine Apparatus every 6 days. Most recently, Knightlite was updated on November 4, 2026 and ReadyLine Apparatus on October 31, 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.*