# Slime Monster Keeper vs Lost Between the Lines

The clearest difference is in-app purchases: Slime Monster Keeper at none against Lost Between the Lines's 2. Slime Monster Keeper also leads on update cadence (every 6 days vs every 2 months) and iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Lost Between the Lines sells 2 one-off in-app purchases. Slime Monster Keeper asks for nothing beyond the download.

Slime Monster Keeper ships an update every 6 days, Lost Between the Lines every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Slime Monster Keeper | Lost Between the Lines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (9 ratings)](https://appshunter.io/ios/app/lost-between-the-lines/id1636447709/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 344 MB | 283 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Mirabo Joint Stock Company](https://appshunter.io/developer/1472303812) | [5dims Inc. / 株式会社5次元](https://appshunter.io/developer/1607235720) |

## What reviewers say

### Slime Monster Keeper

[App page](https://appshunter.io/ios/app/slime-monster-keeper/id1481003533)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lost Between the Lines

[App page](https://appshunter.io/ios/app/lost-between-the-lines/id1636447709)

Experience a high school romance visual novel with beautiful illustrations and branching storylines. Make choices to uncover a secret and explore five different endings. Features voice acting by a popular anime voice actress.

**Highlights:** Branching storylines, Multiple endings, Beautiful illustrations, Voice acting, Choice-based gameplay, High school romance

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase stories | $14.99 | one-time |
| purchase stories | $14.99 | one-time |


## Frequently asked questions

### Is Slime Monster Keeper free?

Slime Monster Keeper is free to download, with no in-app purchases.

### Is Lost Between the Lines free?

Lost Between the Lines is free to download, with in-app purchases available.

### Do Slime Monster Keeper or Lost Between the Lines have ads?

Neither Slime Monster Keeper nor Lost Between the Lines shows ads.

### Which is updated more often, Slime Monster Keeper or Lost Between the Lines?

Slime Monster Keeper ships an update every 6 days, and Lost Between the Lines every 2 months. Most recently, Slime Monster Keeper was updated on October 26, 2026 and Lost Between the Lines on October 24, 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.*