Comparison

EarthProject vs Memstar Book

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

Head to head

EarthProject

Reduce Carbon & Plastic waste!

Free

📚 Education

★ 3.04 ratingsView app →

Audio guide / AR

About

EarthProject

Learn and get motivated to reduce your carbon and plastic footprint. This educational app provides tools and encouragement for sustainable living.

Highlights

Learn waste reduction techniques
Motivation for sustainable living
Carbon footprint tracking
Plastic waste reduction guidance
Educational content

Features

Read full description

The EarthProject app will teach you and motivate you to reduce your carbon and plastic waste!

About

Memstar Book

Features

Read full description

The app offers an audio guide feature that allows users to translate related book content into another language. It also offers an augmented reality feature that allows users to view certain illustrations in the book using their mobile device's camera.

Screenshots

EarthProject4 screens

Memstar Book4 screens

Verdict

The call

The clearest difference is update cadence: EarthProject at every 3 weeks against Memstar Book's every 3 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EarthProject ships an update every 3 weeks, Memstar Book every 3 months. The most recent releases landed on June 1, 2026 and December 3, 2025 respectively.

Scorecard1 real difference · 9 level

EarthProject versus Memstar Book: the parameters behind the verdict, then further details
Parameter	EarthProject	Memstar Book
Price	Free	Free
Rating	3.0 (4 ratings) — better	—
Positive reviews	60.0% of reviews	—
Number of ratings	4 — better	—
Update frequency	Every 3 weeks — better	Every 3 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	12.0 — better	13.4
Further details — not scored
Size	93 MB	79 MB
Age rating	4+	4+
Developer	TAKE ACTION GLOBAL Inc	66 ORIGIN

In-app purchases

None

EarthProject

No in-app purchases

None

Memstar Book

No in-app purchases

Questions

Is EarthProject free?

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

Is Memstar Book free?

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

Do EarthProject or Memstar Book have ads?

Neither EarthProject nor Memstar Book shows ads.

Which is updated more often, EarthProject or Memstar Book?

EarthProject ships an update every 3 weeks, and Memstar Book every 3 months. Most recently, EarthProject was updated on June 1, 2026 and Memstar Book on December 3, 2025.