Comparison

Number Time vs ISUD Zero

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

Head to head
About

Number Time

Read full description

1. About this game Number Time is a simple puzzle game where players match and erase blocks with number from 0 to 6. - Numbers Change by Addition Overlapping two blocks will change the number of the moved block to the sum of their numbers. - How to Erase Blocks If you match two blocks or more and tap one of them, a rectangular frame will appear, then if you tap it, you can erase the blocks in it and get points. - How to Play You can play the game in the score attack mode and the time attack mode. - Two Games There are “All Numbers” and “Number 6” games. In the former you can erase all types of blocks, but in the later you can erase only “number 6 blocks”. Each game tutorial will teach you each rule in the app. - Support Rankings If you sign in to Game Center and play this game, you can compete with players around the world for score and time. Aim for the top rankings! - Ad Display In order to make the app available for free except for some features, ads are displayed within the app. 2. In-App Purchase Items - Remove Ad This item removes the ad. Furthermore, You will be able to play games offline: you will need to be online to participate in the rankings. - Unlock 7 Game Modes This item unlocks 7 special game modes. A specific block does not appear in these modes. - Unlock Endless Mode This item unlocks endless mode. In standard mode, you end the game by erasing 480 blocks, but in endless mode, you can push the envelope for the score without ending the game. For your information, there is also a theoretical upper limit in this mode. - Unlock No-Drop Mode This item unlocks no-drop mode. In standard mode, blocks drop after the block operation, but in no-drop mode, those don't drop. This item is only valid for the game "Number 6”. This software includes the works that are distributed in the Apache License 2.0.

About

ISUD Zero

Features
Read full description

Dodge readable bullet patterns, graze for Phase Pulse, and chase clean weekly scores against the Pattern Engine. Description: I.S.U.D. Zero is a portrait bullet-hell boss rush built around clean reads, a tiny fair hitbox, and fast retry mastery. Enter the simulation chamber, learn each boss pattern, graze close calls to charge Phase Pulse, and chase cleaner clears across The Instructor, Mirror Cadet, Twin Array, and The Cartographer. Every run is short, sharp, and score-driven. Bosses move, mutate, and escalate through multiple phases. The ship only takes damage at the red core, so the chaos stays readable even when the screen blooms with bullets. Features: - Precision drag controls for portrait play - Fair red-core hitbox with optional callout - Graze scoring and Phase Pulse screen clears - Four multi-phase bosses with distinct patterns and visual escalation - Five additional boss slots marked Coming Soon - Difficulty options, persistent best scores, and ranks - Game Center weekly and all-time high score leaderboards - Neon arcade presentation with original audio hooks

Screenshots

Number Time2 screens
ISUD Zero4 screens

Verdict

The call

The clearest difference is in-app purchases: ISUD Zero at none against Number Time's 4. ISUD Zero also leads on ads (none vs shown). On price, 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. Number Time sells 4 one-off in-app purchases. ISUD Zero asks for nothing beyond the download.

Scorecard2 real differences · 4 level
Number Time versus ISUD Zero: the parameters behind the verdict, then further details
ParameterNumber TimeISUD Zero
PriceFreeFree
Update frequencyFortnightly—
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size65 MB119 MB
Age rating4+12+
DeveloperMasaru KimuraSuwitcha Sugthana

In-app purchases

4 purchases

Number Time

One-time4
  • Remove Ad$0.99
  • Unlock Endless Mode$0.99
  • Unlock No-Drop Mode$0.99
Show 1 more
  • Unlock 7 Game Modes$1.99
None

ISUD Zero

No in-app purchases

Questions

Is Number Time free?
Number Time is free to download, with in-app purchases available.
Is ISUD Zero free?
ISUD Zero is free to download, with no in-app purchases.
Do Number Time or ISUD Zero have ads?
Number Time shows ads; ISUD Zero does not.

Other comparisons