# PoolTherm vs Lava Clock

The clearest difference is price: PoolTherm at Free against Lava Clock's $0.99. PoolTherm also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 17.0). Lava Clock's advantage is update cadence (every 2 days vs every 24 months). On ads and device support there is nothing between them.

PoolTherm is free to download; Lava Clock costs $0.99 up front. Lava Clock sells 1 one-off in-app purchase. PoolTherm asks for nothing beyond the download.

PoolTherm ships an update every 24 months, Lava Clock every 2 days. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PoolTherm | Lava Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 241 MB | 42 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dantherm](https://appshunter.io/developer/1368468352) | [Maxime Pontoire](https://appshunter.io/developer/525396222) |

## What reviewers say

### PoolTherm

[App page](https://appshunter.io/ios/app/pooltherm/id1511669038)

Remotely manage your pool's heating system from your mobile device. Control power, modes, temperature, and set timers. Includes weather forecasts to optimize heating schedules.

**Highlights:** Remote heat pump control, On/Off functionality, Whisper/Boost mode selection, Water temperature setting, Timer scheduling, Weather forecast integration

**In-app purchases:** none


### Lava Clock

[App page](https://appshunter.io/ios/app/lava-clock/id6744017027)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Features | $3.99 | one-time |


## Frequently asked questions

### Is PoolTherm free?

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

### Is Lava Clock free?

Lava Clock costs $0.99, and also offers in-app purchases.

### Do PoolTherm or Lava Clock have ads?

Neither PoolTherm nor Lava Clock shows ads.

### Which is updated more often, PoolTherm or Lava Clock?

PoolTherm ships an update every 24 months, and Lava Clock every 2 days. Most recently, PoolTherm was updated on October 9, 2026 and Lava Clock 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.*