# ProfiSignal 20 vs Poolify

The clearest difference is price: ProfiSignal 20 at Free against Poolify's $4.99. ProfiSignal 20 also leads on iOS requirement (17.0 vs 26.0). Poolify's advantage is update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

ProfiSignal 20 is free to download; Poolify costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProfiSignal 20 ships an update every 4 months, Poolify every 3 weeks. The most recent releases landed on September 15, 2026 and June 21, 2026 respectively.

## The numbers

| Metric | ProfiSignal 20 | Poolify |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 408 MB | 3 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Delphin Technology AG](https://appshunter.io/developer/804641016) | [STRICS IT GmbH](https://appshunter.io/developer/1498799328) |

## What reviewers say

### ProfiSignal 20

[App page](https://appshunter.io/ios/app/profisignal-20/id1494152331)

**In-app purchases:** none


### Poolify

[App page](https://appshunter.io/ios/app/poolify-pool-helper/id1519592860)

Easily monitor your swimming pool's chemical levels by inputting measurements from your preferred device. Receive clear feedback on whether your readings are within the optimal range or require adjustment.

**Highlights:** Track pool chemical levels, Input measurements from any device, Receive adjustment feedback, Share data across iOS devices, Simple user interface, Value attention indicator

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProfiSignal 20 free?

ProfiSignal 20 is free to download, with no in-app purchases.

### Is Poolify free?

Poolify costs $4.99, with no in-app purchases.

### Do ProfiSignal 20 or Poolify have ads?

Neither ProfiSignal 20 nor Poolify shows ads.

### Which is updated more often, ProfiSignal 20 or Poolify?

ProfiSignal 20 ships an update every 4 months, and Poolify every 3 weeks. Most recently, ProfiSignal 20 was updated on September 15, 2026 and Poolify on June 21, 2026.

---

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