# RU Library e vs SparkJoy

The clearest difference is in-app purchases: RU Library e at none against SparkJoy's 10. RU Library e also leads on iOS requirement (8.0 vs 15). SparkJoy's advantage is update cadence (every 3 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. SparkJoy sells 10 one-off in-app purchases. RU Library e asks for nothing beyond the download.

RU Library e ships an update monthly, SparkJoy every 3 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RU Library e | SparkJoy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sparkjoy/id6711340183/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 9 MB | 155 MB |
| Requires iOS | **8.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [STAQ Technologies Co., Ltd.](https://appshunter.io/developer/506659247) | [SPK JOY CO., LTD.](https://appshunter.io/developer/1890187060) |

## What reviewers say

### RU Library e

[App page](https://appshunter.io/ios/app/ru-library-e-book/id933694543)

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

**In-app purchases:** none


### SparkJoy

[App page](https://appshunter.io/ios/app/sparkjoy/id6711340183)

Connect with a community of writers and readers. Publish your stories, discover new narratives, and engage with fellow enthusiasts. Monetize your work through reader donations and support your favorite authors.

**Highlights:** Write and publish stories, Organize stories into chapters, Develop characters, Engage with readers via comments, Monetize work through donations, Access diverse story content, Follow favorite writers

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 SparkCoin Bundle | $0.99 | one-time |
| 35 SparkCoin Bundle | $0.99 | one-time |
| SparkCoin Bundle 70 | $1.99 | one-time |
| 100 SparkCoin Bundle | $2.99 | one-time |
| SparkCoin Bundle 200 | $4.99 | one-time |
| 250 SparkCoin Bundle | $6.99 | one-time |
| SparkCoin Bundle 290 | $7.99 | one-time |
| 500 SparkCoin Bundle | $12.99 | one-time |
| SparkCoin Bundle 490 | $12.99 | one-time |
| SparkCoin Bundle 990 | $29.99 | one-time |


## Frequently asked questions

### Is RU Library e free?

RU Library e is free to download, with no in-app purchases.

### Is SparkJoy free?

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

### Do RU Library e or SparkJoy have ads?

Neither RU Library e nor SparkJoy shows ads.

### Which is updated more often, RU Library e or SparkJoy?

RU Library e ships an update monthly, and SparkJoy every 3 days. Most recently, RU Library e was updated on October 29, 2026 and SparkJoy on October 30, 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.*