# Deltares Aquality vs Avimap

The clearest difference is iOS requirement: Deltares Aquality at 12.0 against Avimap's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Deltares Aquality ships an update every 2 months, Avimap monthly. The most recent releases landed on May 16, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Deltares Aquality | Avimap |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 85 MB | 19 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stichting Deltares](https://appshunter.io/developer/576389487) | [Sovon Vogelonderzoek Nederland](https://appshunter.io/developer/1068127599) |

## What reviewers say

### Deltares Aquality

[App page](https://appshunter.io/ios/app/deltares-aquality/id1246781089)

**In-app purchases:** none


### Avimap

[App page](https://appshunter.io/ios/app/avimap/id1483063137)

**In-app purchases:** none


## Frequently asked questions

### Is Deltares Aquality free?

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

### Is Avimap free?

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

### Do Deltares Aquality or Avimap have ads?

Neither Deltares Aquality nor Avimap shows ads.

### Which is updated more often, Deltares Aquality or Avimap?

Deltares Aquality ships an update every 2 months, and Avimap monthly. Most recently, Deltares Aquality was updated on May 16, 2026 and Avimap on September 16, 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.*