Rocket Protector vs IRoHa de Sudoku!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Rocket Protector
Test your reflexes and precision by defending a planet from incoming asteroids. Launch rockets to destroy threats and upgrade your arsenal to survive longer. The goal is to see how long you can protect your world.
- Planet rotation via swipe
- Rocket launching by tap
- Asteroid destruction
- Missile upgrades
- Reaction and accuracy testing
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Check your reaction and accuracy. Find out how long you can protect the planet from asteroids by launching rockets. Improve the missiles and last longer. Swipe to rotate the planet. Tap to launch the rocket. Destroy everything that approaches the planet.
IRoHa de Sudoku!
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Sudoku (Number Place) is a puzzle game played all over the world. The rules are simple: Fill all cells in a vertical row, a horizontal column, and a 3x3 box with 9 different characters so that there are no duplicates. In this application, instead of the usual Sudoku numbers, the nine Japanese hiragana characters "い(i)", "ろ(ro)", "は(ha)", "に(ni)", "ほ(ho)", "へ(he)", "と(to)", "ち(chi)", and "り(ri)" are used to play. These characters are taken from Japanese Iroha-uta. At first, you can play the Training stage and the Easy stage. Unlocking unlocks all features. - Normal stage - Hard stage - Expert Stage - Daily mode It is recommended for brain training, so please play it!
Screenshots
Verdict
The clearest difference is ads: IRoHa de Sudoku! at none against Rocket Protector's shown. IRoHa de Sudoku! also leads on update cadence (every 3 months vs every 24 months). Rocket Protector's advantage is iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Rocket Protector sells 3 one-off in-app purchases and IRoHa de Sudoku! sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Rocket Protector ships an update every 24 months, IRoHa de Sudoku! every 3 months. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.
| Parameter | Rocket Protector | IRoHa de Sudoku! |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 24 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 42 MB | 158 MB |
| Age rating | 4+ | 4+ |
| Developer | ALEXEY KOZLOV | Kouji Mori |
In-app purchases
Rocket Protector
- Remove Ads$0.99
- 100 mineral$0.99
- 500 mineral$1.99
IRoHa de Sudoku!
- Unlock$1.99
Questions
Is Rocket Protector free?
Is IRoHa de Sudoku! free?
Do Rocket Protector or IRoHa de Sudoku! have ads?
Which is updated more often, Rocket Protector or IRoHa de Sudoku!?
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