# Berkeley Carroll Pool vs Tankly

The clearest difference is update cadence: Tankly at daily against Berkeley Carroll Pool's every 2 months. Berkeley Carroll Pool's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Berkeley Carroll Pool ships an update every 2 months, Tankly daily. The most recent releases landed on October 5, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Berkeley Carroll Pool | Tankly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tankly/id6756762304/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | — | Free |
| Size | 194 MB | 3 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [The Berkeley Carroll School](https://appshunter.io/developer/1766974766) | [Ethan Feldman](https://appshunter.io/developer/858339922) |

## What reviewers say

### Berkeley Carroll Pool

[App page](https://appshunter.io/ios/app/berkeley-carroll-pool/id1233541465)

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

**In-app purchases:** none


### Tankly

[App page](https://appshunter.io/ios/app/tankly/id6756762304)

This app makes drinking water enjoyable by letting you build and interact with a virtual aquarium. Log your intake, set goals, and earn new sea creatures as you stay hydrated. It offers reminders and progress tracking to help build healthy habits.

**Highlights:** Log water intake with quick-tap buttons, Personalized daily hydration goals, Animated aquarium visualizes progress, Syncs with Apple Health, Unlock and collect sea creatures, Daily reminders and streak system, Apple Watch companion app

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

**In-app purchases:** none


## Frequently asked questions

### Is Berkeley Carroll Pool free?

Berkeley Carroll Pool is free to download, with no in-app purchases.

### Is Tankly free?

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

### Do Berkeley Carroll Pool or Tankly have ads?

Neither Berkeley Carroll Pool nor Tankly shows ads.

### Which is updated more often, Berkeley Carroll Pool or Tankly?

Berkeley Carroll Pool ships an update every 2 months, and Tankly daily. Most recently, Berkeley Carroll Pool was updated on October 5, 2026 and Tankly on October 19, 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.*