Comparison

Physics Heist By Professor vs Math 9

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

Head to head

Physics Heist By Professor

Grade 9 math offline

About

Physics Heist By Professor

Read full description

Access video lectures anytime, anywhere, and learn at your own pace without sacrificing quality.

About

Math 9

Features

Read full description

Math 9 is an offline-first Grade 9 math coach built with Flutter. All theory, practice, and tests are stored in local JSON assets, delivering a fast, reliable experience without backend or media dependencies.

Screenshots

Physics Heist By Professor4 screens

Math 94 screens

Verdict

The call

The clearest difference is in-app purchases: Math 9 at none against Physics Heist By Professor's 1. Math 9 also leads on update cadence (every 2 days vs every 6 months) and iOS requirement (13.0 vs 16.6). 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. Physics Heist By Professor sells 1 one-off in-app purchase. Math 9 asks for nothing beyond the download.

UpkeepUpdate frequency

Physics Heist By Professor ships an update every 6 months, Math 9 every 2 days. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 3 level

Physics Heist By Professor versus Math 9: the parameters behind the verdict, then further details
Parameter	Physics Heist By Professor	Math 9
Price	Free	Free
Update frequency	Every 6 months	Every 2 days — better
Ads	No	No
In-app purchases	Yes	No — better
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	16.6	13.0 — better
Further details — not scored
Size	322 MB	22 MB
Age rating	4+	4+
Developer	Spayee Labs	Dung Do Tri

In-app purchases

1 purchases

Physics Heist By Professor

One-time1

Training Course P$9.99

None

Math 9

No in-app purchases

Questions

Is Physics Heist By Professor free?

Physics Heist By Professor is free to download, with in-app purchases available.

Is Math 9 free?

Math 9 is free to download, with no in-app purchases.

Do Physics Heist By Professor or Math 9 have ads?

Neither Physics Heist By Professor nor Math 9 shows ads.

Which is updated more often, Physics Heist By Professor or Math 9?

Physics Heist By Professor ships an update every 6 months, and Math 9 every 2 days. Most recently, Physics Heist By Professor was updated on September 10, 2026 and Math 9 on September 9, 2026.