Comparison

Minus vs Murf Planet

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

Head to head

Minus

Learn to subtract from 1 to 10

Smart AI companion for family

Free

📚 Education

No ratingsView app →

About

Minus

Features

Read full description

With this little app you child will learn very easily minus arithmetic tasks. The app collect no data, do not need any internet connection and never use any advertising.

About

Murf Planet

Read full description

Welcome to Murf Planet – now with AI for curious kids! Murf Planet turns everyday family life into an adventure. Kids earn diamonds by helping out, learning, or being creative. They can exchange them for rewards that parents define in the app. New: smart AI features made for kids. They can ask questions, identify and learn about objects, create images and stories – all powered by Murf AI Credits. Murf encourages independence, makes learning fun, and offers a safe space to explore and participate. Term of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Minus3 screens

Murf Planet4 screens

Verdict

The call

The clearest difference is in-app purchases: Minus at none against Murf Planet's 10. On price, update cadence, 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. Murf Planet sells 10 in-app purchases, starting at $4.99 per month. Minus asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

Scorecard1 real difference · 5 level

Minus versus Murf Planet: the parameters behind the verdict, then further details
Parameter	Minus	Murf Planet
Price	Free	Free
Update frequency	Every 2 weeks	Every 2 weeks
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	14.3 — better	15.1
Further details — not scored
Size	0 MB	104 MB
Age rating	4+	4+
Developer	Michael Hohlfeld	Al now AG

In-app purchases

None

Minus

No in-app purchases

10 purchases

Murf Planet

Subscriptions2

Basic$4.991 Month
Premium$9.991 Month

One-time8

15 Diamonds$0.49
50 Diamonds$0.99
100 Diamonds$1.99

Show 5 more

100 Credits$2.99
200 Diamonds$3.99
300 Diamonds$4.99
250 Credits$5.99
500 Credits$9.99

Questions

Is Minus free?

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

Is Murf Planet free?

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

Do Minus or Murf Planet have ads?

Neither Minus nor Murf Planet shows ads.

Which is updated more often, Minus or Murf Planet?

Minus ships an update every 2 weeks, and Murf Planet every 2 weeks. Most recently, Minus was updated on October 4, 2026 and Murf Planet on October 17, 2026.