Comparison

TBPS Lite vs NinjaTube

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

Head to head

TBPS Lite

Three-Body Problem Simulator

About

TBPS Lite

Features

Read full description

TBPS is a versatile three-body problem simulator that allows you to explore the fascinating and mysterious dynamics of three-body phenomena. Whether you're an observer marveling at the unpredictable motions of celestial objects or a creator designing unique universes by tweaking various parameters, TBPS offers a compelling experience. Learn more about the three-body problem in mathematics and physics by visiting https://en.wikipedia.org/wiki/Three-body_problem or explore its depiction in literature through the acclaimed novel *The Three-Body Problem* by Liu Cixin at [https://en.wikipedia.org/wiki/The_Three-Body_Problem_(novel)](https://en.wikipedia.org/wiki/The_Three-Body_Problem_(novel)).

About

NinjaTube

Features

Read full description

NinjaTube is an app that lets you watch YouTube videos directly on your Apple Watch. It provides both iOS and watchOS apps for a seamless experience. [watchOS App] ･Play YouTube videos sent from the iOS app ･Standalone video selection and search on watchOS is not supported [iOS App] ･Send YouTube videos to the watchOS app (iPhone app only) ･Watch YouTube videos directly on your iPhone with the built-in browser ･Picture-in-Picture (PiP) playback supported ･Background playback supported ･Desktop site display available in video playback mode ･Browse websites other than YouTube from the address bar ･Bookmark feature ･Dark mode support

Screenshots

TBPS Lite3 screens

NinjaTube3 screens

Verdict

The call

The clearest difference is iOS requirement: TBPS Lite at 12.0 against NinjaTube's 16.6. On price, update cadence, ads and in-app purchases 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

TBPS Lite ships an update weekly, NinjaTube every 5 days. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 5 level

TBPS Lite versus NinjaTube: the parameters behind the verdict, then further details
Parameter	TBPS Lite	NinjaTube
Price	Free	Free
Update frequency	Weekly	Every 5 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, Apple Watch
Requires iOS	12.0 — better	16.6
Further details — not scored
Size	32 MB	15 MB
Age rating	4+	17+
Developer	Wu Bin	Shingo Ueda

In-app purchases

None

TBPS Lite

No in-app purchases

None

NinjaTube

No in-app purchases

Questions

Is TBPS Lite free?

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

Is NinjaTube free?

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

Do TBPS Lite or NinjaTube have ads?

Neither TBPS Lite nor NinjaTube shows ads.

Which is updated more often, TBPS Lite or NinjaTube?

TBPS Lite ships an update weekly, and NinjaTube every 5 days. Most recently, TBPS Lite was updated on October 28, 2026 and NinjaTube on October 30, 2026.