# Summer smiles vs NirvanaHP

The clearest difference is review sentiment: Summer smiles at 80% against NirvanaHP's 28%. Summer smiles also leads on rating (5.0 vs 1.3) and iOS requirement (12.0 vs 14.0). NirvanaHP's advantage is update cadence (every 2 months vs every 17 months) and ratings volume (6 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Summer smiles holds the better App Store score, 5.0 against 1.3. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews point the same way: 80% of Summer smiles's written reviews are positive against 28% of NirvanaHP's.

Summer smiles ships an update every 17 months, NirvanaHP every 2 months. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Summer smiles | NirvanaHP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/summer-smiles/id627016784/reviews)** | [1.3 (6 ratings)](https://appshunter.io/ios/app/nirvanahp/id862234265/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | **80.0% of reviews** | 28.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 6 MB | 10 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sani-Marc Inc.](https://appshunter.io/developer/627016787) | [Nirvana Heat Pumps](https://appshunter.io/developer/862234268) |

## What reviewers say

### Summer smiles

[App page](https://appshunter.io/ios/app/summer-smiles/id627016784)

Easily maintain balanced pool or spa water with instant product recommendations. Input your water analysis results to receive precise guidance on the exact amount of chemicals needed for optimal water quality. Create profiles for multiple pools or spas and manage your water care efficiently.

**Highlights:** Water analysis input, Instant product recommendations, Chemical dosage calculation, Pool and spa profiles, Product purchasing list

**Features:** macOS Compatibility

**In-app purchases:** none


### NirvanaHP

[App page](https://appshunter.io/ios/app/nirvanahp/id862234265)

This app allows you to remotely control your Nirvana heat pump using your iPhone or iPad. It requires the optional WIFI interface board to be installed in your heat pump for wireless functionality.

**Highlights:** Wireless heat pump control, iPhone and iPad compatibility, Remote temperature adjustment, Requires WIFI interface board

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Summer smiles free?

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

### Is NirvanaHP free?

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

### Which has better reviews, Summer smiles or NirvanaHP?

Summer smiles is rated higher. Summer smiles averages 5.0 out of 5 from 2 ratings, while NirvanaHP averages 1.3 from 6 ratings.

### Do Summer smiles or NirvanaHP have ads?

Neither Summer smiles nor NirvanaHP shows ads.

### Which is updated more often, Summer smiles or NirvanaHP?

Summer smiles ships an update every 17 months, and NirvanaHP every 2 months. Most recently, Summer smiles was updated on September 16, 2026 and NirvanaHP on September 18, 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.*