Comparison

Missing Num vs Classroom Spinners

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

Head to head

brain workout

About

Missing Num

Features

Read full description

Simple Game. Finding a Missing Number is an excellent way to reinforce number recognition. Time Trial.

About

Classroom Spinners

Features

Read full description

Classroom Spinners is a collection of spinners specifically designed for educators. Using a slider the spinner can be changed to accommodate a variety of setups: 3, 4, 5, 6, 8 or 10 sections. Sections can be labelled with either numbers or letters. Use Classroom Spinners to conduct probability experiments by spinning the spinner a specific number of times. With your students compare how the experimental probability compares with the theoretical probability?

Screenshots

Missing Num4 screens

Verdict

The call

The clearest difference is price: Missing Num at Free against Classroom Spinners's $0.99. Classroom Spinners's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.6). On update cadence, 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

Missing Num is free to download; Classroom Spinners costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Missing Num ships an update every 11 months, Classroom Spinners every 21 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 3 level

Missing Num versus Classroom Spinners: the parameters behind the verdict, then further details
Parameter	Missing Num	Classroom Spinners
Price	Free — better	$0.99
Update frequency	Every 11 months — better	Every 21 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPad, Apple TV
Requires iOS	15.6	12.0 — better
Further details — not scored
Size	8 MB	7 MB
Age rating	4+	4+
Developer	Yasuyoshi Ota	Ventura Educational Systems

In-app purchases

None

Missing Num

No in-app purchases

None

Classroom Spinners

No in-app purchases

Questions

Is Missing Num free?

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

Is Classroom Spinners free?

Classroom Spinners costs $0.99, with no in-app purchases.

Do Missing Num or Classroom Spinners have ads?

Missing Num shows ads; Classroom Spinners does not.

Which is updated more often, Missing Num or Classroom Spinners?

Missing Num ships an update every 11 months, and Classroom Spinners every 21 months. Most recently, Missing Num was updated on October 29, 2026 and Classroom Spinners on October 26, 2026.