# Hydrosolar 24 vs ABC Track

The clearest difference is iOS requirement: ABC Track at 12.0 against Hydrosolar 24's 15.0. 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.

Hydrosolar 24 ships an update every 10 months, ABC Track every 9 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Hydrosolar 24 | ABC Track |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 9 months** |
| Size | 3 MB | 25 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [HYDROSOLAR](https://appshunter.io/developer/662898422) | [2P-INFO](https://appshunter.io/developer/1437499688) |

## What reviewers say

### Hydrosolar 24

[App page](https://appshunter.io/ios/app/hydrosolar-24/id662898419)

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

**In-app purchases:** none


### ABC Track

[App page](https://appshunter.io/ios/app/abc-track/id1437499689)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hydrosolar 24 free?

Hydrosolar 24 is free to download, with no in-app purchases.

### Is ABC Track free?

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

### Do Hydrosolar 24 or ABC Track have ads?

Neither Hydrosolar 24 nor ABC Track shows ads.

### Which is updated more often, Hydrosolar 24 or ABC Track?

Hydrosolar 24 ships an update every 10 months, and ABC Track every 9 months. Most recently, Hydrosolar 24 was updated on October 24, 2026 and ABC Track on October 26, 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.*