# Sestre Budimir vs Hydro

The clearest difference is in-app purchases: Sestre Budimir at none against Hydro's 2. Sestre Budimir also leads on iOS requirement (15.1 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Hydro sells 2 in-app purchases, starting at $1.99 per month. Sestre Budimir asks for nothing beyond the download.

Sestre Budimir ships an update every 4 weeks, Hydro every 6 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sestre Budimir | Hydro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 6 weeks |
| Size | 199 MB | 12 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Sestre Budimir doo](https://appshunter.io/developer/1794535153) | [Andre Destro](https://appshunter.io/developer/850379919) |

## What reviewers say

### Sestre Budimir

[App page](https://appshunter.io/ios/app/sestre-budimir/id6746510122)

**Features:** Apple Wallet

**In-app purchases:** none


### Hydro

[App page](https://appshunter.io/ios/app/hydro-water-tracker/id6761480955)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydro Premium (Monthly) | $1.99 | per month |
| Hydro Premium (Yearly) | $9.99 | per year |


## Frequently asked questions

### Is Sestre Budimir free?

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

### Is Hydro free?

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

### Do Sestre Budimir or Hydro have ads?

Neither Sestre Budimir nor Hydro shows ads.

### Which is updated more often, Sestre Budimir or Hydro?

Sestre Budimir ships an update every 4 weeks, and Hydro every 6 weeks. Most recently, Sestre Budimir was updated on October 30, 2026 and Hydro on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*