# AquaCalculator vs EggHatching

The clearest difference is price: AquaCalculator at Free against EggHatching's $3.99. AquaCalculator also leads on rating (3.7 vs 1.0) and update cadence (every 3 weeks vs every 4 months). EggHatching's advantage is in-app purchases (none vs 5). On ads and iOS requirement there is nothing between them.

AquaCalculator is free to download; EggHatching costs $3.99 up front. AquaCalculator sells 5 in-app purchases, starting at $3.99 per month. EggHatching asks for nothing beyond the download.

AquaCalculator holds the better App Store score, 3.7 against 1.0. That said, the two scores are not equally well evidenced: AquaCalculator has 12 ratings behind it against 1, so its average is the more settled of the two.

AquaCalculator ships an update every 3 weeks, EggHatching every 4 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | AquaCalculator | EggHatching |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[3.7 (12 ratings)](https://appshunter.io/ios/app/aquacalculator/id1449511522/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/egghatching/id6748214231/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Subscription | **Paid** |
| Size | 49 MB | 1 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thallos](https://appshunter.io/developer/544488594) | [Henning Weitner](https://appshunter.io/developer/1824493504) |

## What reviewers say

### AquaCalculator

[App page](https://appshunter.io/ios/app/aquacalculator/id1449511522)

This app helps dedicated marine aquarists manage and document their aquariums. It tracks water parameters, manages animal stock, and calculates precise salt and nutrient additions. It also offers tools for adjusting calcium, alkalinity, and magnesium levels.

**Highlights:** Manage multiple aquariums, Water value documentation with graphs and tables, Animal administration with notes and pictures, Recurrent memory for care tasks, Salt quantity estimation, Nutrient and chemical adjustment calculators, Extensive setting options

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AquaCalculator monthly | $3.99 | per month |
| AquaCalculator yearly | $19.99 | per year |
| A large coffee | $3.99 | one-time |
| Ice Tead and a Sandwich | $9.99 | one-time |
| Something to learn | $39.99 | one-time |


### EggHatching

[App page](https://appshunter.io/ios/app/egghatching/id6748214231)

Easily track egg incubation with daily reminders for turning and candling. Document key dates from start to hatch. Ideal for hobby breeders aiming for successful chick hatching.

**Highlights:** Incubation process tracking, Daily turning reminders, Candling documentation, Important date tracking, Hatching planning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AquaCalculator free?

AquaCalculator is free to download, with in-app purchases available.

### Is EggHatching free?

EggHatching costs $3.99, with no in-app purchases.

### Which has better reviews, AquaCalculator or EggHatching?

AquaCalculator is rated higher. AquaCalculator averages 3.7 out of 5 from 12 ratings, while EggHatching averages 1.0 from 1 ratings.

### Do AquaCalculator or EggHatching have ads?

Neither AquaCalculator nor EggHatching shows ads.

### Which is updated more often, AquaCalculator or EggHatching?

AquaCalculator ships an update every 3 weeks, and EggHatching every 4 months. Most recently, AquaCalculator was updated on October 26, 2026 and EggHatching on October 8, 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.*