# Robots On vs PIYON'S GUARDIAN

The clearest difference is price: Robots On at Free against PIYON'S GUARDIAN's $0.99. PIYON'S GUARDIAN's advantage is rating (5.0 vs 1.0) and ads (none vs shown). On review sentiment, ratings volume, update cadence and in-app purchases there is nothing between them.

Robots On is free to download; PIYON'S GUARDIAN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PIYON'S GUARDIAN holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Robots On ships an update every 31 months, PIYON'S GUARDIAN every 19 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Robots On | PIYON'S GUARDIAN |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/robots-on/id1296560480/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/piyons-guardian/id1516139319/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 31 months | **Every 19 months** |
| Monetization | **Ad-supported** | Paid |
| Size | 62 MB | 44 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Galatic Droids](https://appshunter.io/developer/806182439) | [Hideki Kubo](https://appshunter.io/developer/1512674908) |

## What reviewers say

### Robots On

[App page](https://appshunter.io/ios/app/robots-on/id1296560480)

Engage in a fast-paced arcade shooter where you must blast through waves of killer robots. Utilize power-ups and strategic targeting to survive increasingly difficult levels in this retro-inspired game.

**Highlights:** Intensive arcade gameplay, Multiple camera angles, AI-powered robot enemies, Power-up collection, Retro 2D mode, Rapid fire controls

**Features:** macOS Compatibility

**In-app purchases:** none


### PIYON'S GUARDIAN

[App page](https://appshunter.io/ios/app/piyons-guardian/id1516139319)

Experience a retro electronic game with unique characters and gameplay variations. Recreate a nostalgic atmosphere with authentic instructions and visual elements. Enjoy a classic gaming experience designed for a simpler time.

**Highlights:** Unlockable characters with unique rules, Easier 'Game B' mode without companion, Nostalgic atmosphere recreation, Authentic retro instructions, Deteriorating reflectors and polarizers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Robots On free?

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

### Is PIYON'S GUARDIAN free?

PIYON'S GUARDIAN costs $0.99, with no in-app purchases.

### Which has better reviews, Robots On or PIYON'S GUARDIAN?

PIYON'S GUARDIAN is rated higher. Robots On averages 1.0 out of 5 from 1 ratings, while PIYON'S GUARDIAN averages 5.0 from 1 ratings.

### Do Robots On or PIYON'S GUARDIAN have ads?

Robots On shows ads; PIYON'S GUARDIAN does not.

### Which is updated more often, Robots On or PIYON'S GUARDIAN?

Robots On ships an update every 31 months, and PIYON'S GUARDIAN every 19 months. Most recently, Robots On was updated on November 3, 2026 and PIYON'S GUARDIAN on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*