# Grim Reader vs Flappy Board Controller

Grim Reader and Flappy Board Controller are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Grim Reader | Flappy Board Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/grim-reader/id6782366876/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 15 MB | 1 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maarten de Kreij](https://appshunter.io/developer/6774006735) | [General Futurics LLC](https://appshunter.io/developer/560612440) |

## What reviewers say

### Grim Reader

[App page](https://appshunter.io/ios/app/grim-reader/id6782366876)

Organize and enrich your personal library of e-books, comics, and audiobooks. This app allows you to manage your collection locally or via your own servers, adding details like covers and author information. Enjoy a seamless reading and listening experience across all your content.

**Highlights:** Library management for e-books, comics, and audiobooks, Enrich library with online book and author data, Supports local files and personal servers (WebDAV, OPDS), Cross-device reading and listening progress tracking, Organize by author, series, and genre, Mark favorites

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

**In-app purchases:** none


### Flappy Board Controller

[App page](https://appshunter.io/ios/app/flappy-board-controller/id6786935728)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grim Reader free?

Grim Reader is free to download, with no in-app purchases.

### Is Flappy Board Controller free?

Flappy Board Controller is free to download, with no in-app purchases.

### Do Grim Reader or Flappy Board Controller have ads?

Neither Grim Reader nor Flappy Board Controller shows ads.

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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.*