Comparison

DoubtBuddy vs MZI Classes

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

Head to head

About

DoubtBuddy

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Doubt Buddy – Snap a doubt, get instant AI explanations or connect with expert tutors 24/7—designed to boost confidence and clarity in school and competitive exam prep.

About

MZI Classes

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Get Personalized Learning Outcomes for everyone. An in-depth performance analysis, where you can know your strong and weak points, your all India rank, your state rank etc. You will also get a virtual tutor who is completely dedicated to bringing out the best in you. It will prioritize your concepts, chapters, topics, and questions through machine learning. Get this innovative learning experience only on MZI-Sai Parjanya Classes Test Series!!

Screenshots

DoubtBuddy4 screens

MZI Classes4 screens

Verdict

The call

The clearest difference is in-app purchases: DoubtBuddy at none against MZI Classes's 10. DoubtBuddy also leads on update cadence (monthly vs every 8 months). On price, ads, device support and iOS requirement 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. MZI Classes sells 10 one-off in-app purchases. DoubtBuddy asks for nothing beyond the download.

UpkeepUpdate frequency

DoubtBuddy ships an update monthly, MZI Classes every 8 months. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 4 level

DoubtBuddy versus MZI Classes: the parameters behind the verdict, then further details
Parameter	DoubtBuddy	MZI Classes
Price	Free	Free
Update frequency	Monthly — better	Every 8 months
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.0 — better	15.5
Further details — not scored
Size	94 MB	147 MB
Age rating	17+	4+
Developer	Anuj Gupta	Online Learning

In-app purchases

None

DoubtBuddy

No in-app purchases

10 purchases

MZI Classes

One-time10

Package - AG$22.99
Package - AJ$24.99
Package - AP$29.99

Show 7 more

Package - AV$34.99
Package - BB$39.99
Package - AY$39.99
Package - BE$44.99
Package - BH$49.99
Package - BG$49.99
Package - BF$49.99

Questions

Is DoubtBuddy free?

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

Is MZI Classes free?

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

Do DoubtBuddy or MZI Classes have ads?

Neither DoubtBuddy nor MZI Classes shows ads.

Which is updated more often, DoubtBuddy or MZI Classes?

DoubtBuddy ships an update monthly, and MZI Classes every 8 months. Most recently, DoubtBuddy was updated on October 10, 2026 and MZI Classes on September 30, 2026.