Comparison

Slime Monster Keeper vs Lost Between the Lines

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Slime Monster Keeper

Features
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Slime Monster – Lucky Character in Fantasy Game. Do you want to bring up a Slime Monster like that? Slime Monster Keeper– An interesting and relaxing nourishing pet game Let’s own a Slime Monster and keep a super cute Slime Monster then give lucky for you. Just press Install, you will get Slime Monster and become the lucky Slime Monster Keeper if you can. Increase happiness index for Slime Monster. Take a bath for Slime Monster. Play with Slime Monster. Help Slime Monster to evolve. Play mini game with Slime Monster. Bring Slime Monster to the real world through AR Camera in the game. Let’s explore a lot of Game’s functions. You will realize a lot of hidden operations in-game. Your Slime Monster will be happy and grow up! Download and play with Slime Monster Keeper!

About

Lost Between the Lines

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
Read full description

[A large-volume romantic drama with beautiful illustrations by a popular artist!] As to what exactly is starting, it's a perfectly normal high school love story starring a somewhat abnormal girl! The cool, intellectual Suzumiya Rion. She usually keeps her distance from her classmates, but for some reason, she invited me out on a date! And the secret Rion's hiding will finally be revealed… If you clear all five endings, you'll find out your future with her. Try out all the different choices and see where you end up. [The game system is a simple novel-type adventure] The choices that appear here and there in the story change the distance between you and your girlfriend! The story will branch into one of five different endings accordingly. Restart the game again and again to complete all the endings! [Main character:Suzumiya Rion] She is the most elegant, serious, and studious high school girl in the school! Rine Suzumiya, who is the most popular madonna in the school, is suddenly approaching you, a girl with whom she has little contact! However, her eyes sometimes glaze over with a lonely look. ...... When her secret is revealed, their romance begins! [Voice: Hikaru Ueda] Rion is voiced by Hikaru Ueda, who also played the lead role in the Japanese animation! TwitterID:@o4novel

Screenshots

Slime Monster Keeper4 screens
Lost Between the Lines4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Slime Monster Keeper versus Lost Between the Lines: the parameters behind the verdict, then further details
ParameterSlime Monster KeeperLost Between the Lines
PriceFreeFree
Rating—3.9 (9 ratings) — better
Positive reviews—42.9% of reviews
Number of ratings—9 — better
Update frequencyEvery 6 days — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size344 MB283 MB
Age rating4+12+
DeveloperMirabo Joint Stock Company5dims Inc. / 株式会社5次元

In-app purchases

None

Slime Monster Keeper

No in-app purchases

2 purchases

Lost Between the Lines

One-time2
  • Purchase stories$14.99
  • purchase stories$14.99

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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