# EDGE21 vs AnomalyAquarium

The clearest difference is rating: EDGE21 at 5.0 against AnomalyAquarium's 3.0. EDGE21 also leads on review sentiment (100% vs 83%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EDGE21 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of EDGE21's written reviews are positive against 83% of AnomalyAquarium's.

EDGE21 ships an update fortnightly, AnomalyAquarium daily. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | EDGE21 | AnomalyAquarium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/edge21/id6757775188/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/anomalyaquarium/id6781497329/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | Free |
| Size | 24 MB | 348 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Mark Baumrind](https://appshunter.io/developer/1868868237) | [YU HIRATA](https://appshunter.io/developer/1703247347) |

## What reviewers say

### EDGE21

[App page](https://appshunter.io/ios/app/edge21/id6757775188)

Master blackjack strategy with this educational tool. Learn basic strategy, practice card counting, and identify mistakes with detailed explanations and engaging game modes. Designed for entertainment and skill improvement.

**Highlights:** Learn Basic Strategy, Speedrun Mode, Boss Hand Mode, Card Counting Practice, Mistake Identification, Detailed Explanations

**Features:** macOS Compatibility

**In-app purchases:** none


### AnomalyAquarium

[App page](https://appshunter.io/ios/app/anomalyaquarium/id6781497329)

Explore a deserted aquarium at night as a security guard, spotting over 40 unique anomalies. Make correct decisions to light lamps and complete your shift. Enjoy simple controls and random events for endless replayability.

**Highlights:** Anomaly spotting gameplay, Over 40 unique anomalies, Randomly appearing anomalies, Simple mobile controls, Automatic saving, Offline play

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

**In-app purchases:** none


## Frequently asked questions

### Is EDGE21 free?

EDGE21 is free to download, with no in-app purchases.

### Is AnomalyAquarium free?

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

### Which has better reviews, EDGE21 or AnomalyAquarium?

EDGE21 is rated higher. EDGE21 averages 5.0 out of 5 from 2 ratings, while AnomalyAquarium averages 3.0 from 1 ratings.

### Do EDGE21 or AnomalyAquarium have ads?

Neither EDGE21 nor AnomalyAquarium shows ads.

### Which is updated more often, EDGE21 or AnomalyAquarium?

EDGE21 ships an update fortnightly, and AnomalyAquarium daily. Most recently, EDGE21 was updated on October 28, 2026 and AnomalyAquarium on October 31, 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.*