# Doku vs CastLoop

The clearest difference is in-app purchases: Doku at none against CastLoop's 8. Doku also leads on ads (none vs shown) and update cadence (every 3 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CastLoop sells 8 one-off in-app purchases. Doku asks for nothing beyond the download.

Doku ships an update every 3 days, CastLoop fortnightly. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Doku | CastLoop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/castloop/id6790343232/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Best chart rank | **#181** | — |
| Size | 113 MB | 96 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Kuma Stories Ltd](https://appshunter.io/developer/6784085617) | [X Original](https://appshunter.io/developer/1766426467) |

## What reviewers say

### Doku

[App page](https://appshunter.io/ios/app/doku-binge-create-repeat/id6784118272)

**Currently charting:** #181 Top Free · Entertainment (US App Store)

**In-app purchases:** none


### CastLoop

[App page](https://appshunter.io/ios/app/castloop/id6790343232)

Engage in AI-powered interactive story games where your choices shape the narrative. Watch cinematic scenes, make critical decisions, or even write your own responses to influence the plot and discover multiple endings across various genres.

**Highlights:** AI interactive story games, Cinematic scenes, Choice-based branching narratives, User-written responses, Multiple paths and endings, Diverse genres (romance, mystery, fantasy, thriller, drama)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diamond Pack 1 | $0.99 | one-time |
| Limited Deal | $0.99 | one-time |
| Unlock Full Story | $0.99 | one-time |
| Diamond Pack 2 | $2.99 | one-time |
| Diamond Pack 3 | $5.99 | one-time |
| Diamond Pack 4 | $9.99 | one-time |
| Diamond Pack 5 | $19.99 | one-time |
| Diamond Pack 6 | $69.99 | one-time |


## Frequently asked questions

### Is Doku free?

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

### Is CastLoop free?

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

### Do Doku or CastLoop have ads?

CastLoop shows ads; Doku does not.

### Which is updated more often, Doku or CastLoop?

Doku ships an update every 3 days, and CastLoop fortnightly. Most recently, Doku was updated on September 14, 2026 and CastLoop on September 9, 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.*