STELLRAID vs ISUD Zero
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
STELLRAID
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Blast through space with ghost allies! 5 mechs, one epic side-scrolling shooter! - Epic side-scrolling mech action in space! - Easy tap controls – jump and shoot with just one finger! - Dodge waves of enemy fire and take down powerful bosses! - Destroyed? Keep fighting as a ghost! Your ghost copies your moves and attacks with you! - Up to 5 mechs at once! Feels like co-op, even when playing solo! - Gather resources to power up your mecha! Build the ultimate machine! - Climb the score rankings and prove you’re the best pilot! - Fast, thrilling stages – perfect for quick play anytime! [Materials Provided By] BGM: “Free BGM and Music Materials MusMus” https://musmus.main.jp VOICE "©ondoku3.com" https://ondoku3.com/
ISUD Zero
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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
Verdict
The clearest difference is in-app purchases: ISUD Zero at none against STELLRAID's 1. 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
Both are free to download. STELLRAID sells 1 one-off in-app purchase. ISUD Zero asks for nothing beyond the download.
| Parameter | STELLRAID | ISUD Zero |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 177 MB | 119 MB |
| Age rating | 4+ | 12+ |
| Developer | MITSUHARU SAIKAWA | Suwitcha Sugthana |
In-app purchases
STELLRAID
- Remove Ads$0.99
ISUD Zero
No in-app purchases









