# Kung Fu Robot vs The ARC Library

The clearest difference is rating: The ARC Library at 5.0 against Kung Fu Robot's 3.5. The ARC Library also leads on update cadence (every 8 days vs every 3 months) and review sentiment (100% vs 76%). Kung Fu Robot's advantage is iOS requirement (8.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Kung Fu Robot sells 4 one-off in-app purchases and The ARC Library sells 8 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

The ARC Library holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 12 and 12 respectively. Written reviews point the same way: 76% of Kung Fu Robot's written reviews are positive against 100% of The ARC Library's.

Kung Fu Robot ships an update every 3 months, The ARC Library every 8 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Kung Fu Robot | The ARC Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (12 ratings)](https://appshunter.io/ios/app/kung-fu-robot/id650029392/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/the-arc-library/id6759504375/reviews)** |
| Number of ratings | 12 | 12 |
| Positive reviews | 76.2% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 571 MB | 111 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Propaganda3, Inc.](https://appshunter.io/developer/322839673) | [Romana Adamka](https://appshunter.io/developer/1879079829) |

## What reviewers say

### Kung Fu Robot

[App page](https://appshunter.io/ios/app/kung-fu-robot/id650029392)

An interactive comic book adventure for children featuring a robot who loves kung fu. Explore an original storyline with engaging animation, action-packed mini-games, and a fun soundtrack. A free preview includes issue #1 and mini-games, with additional issues available for purchase.

**Highlights:** Interactive comic book interface, Original storyline and animation, Action-packed mini-games, Soundboard with sound effects, Free preview of issue #1, Additional issues available for purchase

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Volume 2 | $0.99 | one-time |
| Volume 3 Part 1 | $0.99 | one-time |
| Volume 3 Part 2 | $0.99 | one-time |
| Buy All | $1.99 | one-time |


### The ARC Library

[App page](https://appshunter.io/ios/app/the-arc-library/id6759504375)

Manage your book ARCs, deadlines, and reviews. Authors can run campaigns, find readers, and organize their books. Features include reading statistics, content creator tools, and a reader database.

**Highlights:** Track ARCs by title, ISBN, or barcode, Log reading progress and pace, Manage deadlines and receive alerts, Write and save reviews with prompts, Generate reading statistics, Run and manage ARC campaigns, Discover ARC readers and opportunities

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ARC Addon (Monthly) | $2.99 | per month |
| ARC Library Premium (Monthly) | $7.99 | per month |
| Authors Monthly | $9.99 | per month |
| Combo Plan Monthly | $12.99 | per month |
| ARC Addon (Yearly) | $29.99 | per year |
| ARC Library Premium (yearly) | $79.99 | per year |
| Author Yearly | $99.99 | per year |
| Combo Yearly | $129.99 | per year |


## Frequently asked questions

### Is Kung Fu Robot free?

Kung Fu Robot is free to download, with in-app purchases available.

### Is The ARC Library free?

The ARC Library is free to download, with in-app purchases available.

### Which has better reviews, Kung Fu Robot or The ARC Library?

The ARC Library is rated higher. Kung Fu Robot averages 3.5 out of 5 from 12 ratings, while The ARC Library averages 5.0 from 12 ratings.

### Do Kung Fu Robot or The ARC Library have ads?

Neither Kung Fu Robot nor The ARC Library shows ads.

### Which is updated more often, Kung Fu Robot or The ARC Library?

Kung Fu Robot ships an update every 3 months, and The ARC Library every 8 days. Most recently, Kung Fu Robot was updated on October 24, 2026 and The ARC Library 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.*