# AquaCalculator vs iFieldSurvey

The clearest difference is device support: AquaCalculator at 4 against iFieldSurvey's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. AquaCalculator sells 5 in-app purchases, starting at $3.99 per month and iFieldSurvey sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | AquaCalculator | iFieldSurvey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (12 ratings)](https://appshunter.io/ios/app/aquacalculator/id1449511522/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Subscription | — |
| Size | 49 MB | 5 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thallos](https://appshunter.io/developer/544488594) | [Naihe Hu](https://appshunter.io/developer/564180065) |

## 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 |


### iFieldSurvey

[App page](https://appshunter.io/ios/app/ifieldsurvey/id6793979432)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonthlyPro | $2.99 | per month |
| YearlyPro | $24.99 | per year |
| ClassicLifetimePro | $39.99 | one-time |


## Frequently asked questions

### Is AquaCalculator free?

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

### Is iFieldSurvey free?

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

### Do AquaCalculator or iFieldSurvey have ads?

Neither AquaCalculator nor iFieldSurvey shows ads.

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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.*