# WaterCal vs AquaLog

The clearest difference is price: AquaLog at Free against WaterCal's $0.99. AquaLog also leads on update cadence (every 10 days vs every 4 months) and iOS requirement (15.1 vs 18.6). WaterCal's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

AquaLog is free to download; WaterCal costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WaterCal ships an update every 4 months, AquaLog every 10 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | WaterCal | AquaLog |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 10 days** |
| Size | 9 MB | 27 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nicely Dressed Code](https://appshunter.io/developer/1559095502) | [Blas Prieto](https://appshunter.io/developer/1878084920) |

## What reviewers say

### WaterCal

[App page](https://appshunter.io/ios/app/watercal/id1559095500)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### AquaLog

[App page](https://appshunter.io/ios/app/aqualog-hydration-tracker/id6760383266)

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

**In-app purchases:** none


## Frequently asked questions

### Is WaterCal free?

WaterCal costs $0.99, with no in-app purchases.

### Is AquaLog free?

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

### Do WaterCal or AquaLog have ads?

AquaLog shows ads; WaterCal does not.

### Which is updated more often, WaterCal or AquaLog?

WaterCal ships an update every 4 months, and AquaLog every 10 days. Most recently, WaterCal was updated on October 25, 2026 and AquaLog on October 25, 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.*