# Tidal Tank vs K Cast

The clearest difference is review sentiment: K Cast at 100% against Tidal Tank's 27%. K Cast also leads on rating (4.6 vs 2.2) and update cadence (every 2 weeks vs every 6 weeks). Tidal Tank's advantage is price (Free vs $3.99) and ratings volume (31 vs 7). On ads, in-app purchases and device support there is nothing between them.

Tidal Tank is free to download; K Cast costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

K Cast holds the better App Store score, 4.6 against 2.2. Both are backed by a comparable volume of ratings — 31 and 7 respectively. Written reviews point the same way: 27% of Tidal Tank's written reviews are positive against 100% of K Cast's.

Tidal Tank ships an update every 6 weeks, K Cast every 2 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Tidal Tank | K Cast |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [2.2 (31 ratings)](https://appshunter.io/ios/app/tidal-tank/id1592124481/reviews) | **[4.6 (7 ratings)](https://appshunter.io/ios/app/k-cast/id6479280679/reviews)** |
| Number of ratings | **31** | 7 |
| Positive reviews | 26.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 65 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tidal Tank](https://appshunter.io/developer/1592124483) | [Randal Haehnel](https://appshunter.io/developer/1735424124) |

## What reviewers say

### Tidal Tank

[App page](https://appshunter.io/ios/app/tidal-tank/id1592124481)

This app provides how-to guides and exercise videos to enhance your full-body workouts using an unstable water-filled weight. It offers a fun and challenging way to train, activating smaller muscles for balance and power, and is portable for use anywhere.

**Highlights:** Full body workout through instability, Adjustable weight up to 49 lbs, Portable and easy to set up, Online training center access, Water level to weight indicator

**In-app purchases:** none


### K Cast

[App page](https://appshunter.io/ios/app/k-cast/id6479280679)

This app allows baseball pitchers and catchers to communicate pitch calls securely and efficiently using a phone and AirPods. It eliminates the need for traditional signs, speeding up games and preventing stolen signals.

**Highlights:** Secure pitch communication, Uses phone and AirPods, Optional Apple Watch integration, Eliminates traditional signs, Speeds up game play, Prevents stolen signals

**In-app purchases:** none


## Frequently asked questions

### Is Tidal Tank free?

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

### Is K Cast free?

K Cast costs $3.99, with no in-app purchases.

### Which has better reviews, Tidal Tank or K Cast?

K Cast is rated higher. Tidal Tank averages 2.2 out of 5 from 31 ratings, while K Cast averages 4.6 from 7 ratings.

### Do Tidal Tank or K Cast have ads?

Neither Tidal Tank nor K Cast shows ads.

### Which is updated more often, Tidal Tank or K Cast?

Tidal Tank ships an update every 6 weeks, and K Cast every 2 weeks. Most recently, Tidal Tank was updated on November 3, 2026 and K Cast on October 30, 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.*