# Sutro vs Aiper

The clearest difference is review sentiment: Sutro at 73% against Aiper's 47%. Sutro also leads on iOS requirement (12.4 vs 14.0). Aiper's advantage is rating (4.1 vs 3.9) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, 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.

Aiper holds the better App Store score, 4.1 against 3.9. Both are backed by a comparable volume of ratings — 175 and 260 respectively. Written reviews complicate that: 73% of Sutro's written reviews are positive against 47% of Aiper's, so the app with the better star average is not the one people write more warmly about.

Sutro ships an update every 2 months, Aiper every 3 weeks. The most recent releases landed on June 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sutro | Aiper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (175 ratings)](https://appshunter.io/ios/app/sutro/id1439627399/reviews) | **[4.1 (260 ratings)](https://appshunter.io/ios/app/aiper/id6474955418/reviews)** |
| Number of ratings | 175 | **260** |
| Positive reviews | **72.9% of reviews** | 46.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 39 MB | 232 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sutro Connect Inc](https://appshunter.io/developer/1439627398) | [AIPER GLOBAL PTE. LTD.](https://appshunter.io/developer/1722906035) |

## What reviewers say

### Sutro

[App page](https://appshunter.io/ios/app/sutro/id1439627399)

Effortlessly manage your pool or spa water quality. This app works with a smart monitor to automatically track pH, free chlorine, alkalinity, and temperature, providing insights that make sense for optimal water conditions.

**Highlights:** Automatic water quality monitoring, pH tracking, Free chlorine measurement, Alkalinity tracking, Temperature monitoring, Seamless app integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 👍 Accurate water testing
- 💡 Helpful notifications and recommendations
- 🔒 Reliable customer support
- 🚀 Convenient pool monitoring

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 Inaccurate readings
- 🐛 Buggy app performance
- 🔋 Expensive subscription
- 🐛 Setup difficulties

**Reported bugs**

- App crashes and freezes
- Disconnection issues with hub
- Calibration failures
- Inaccurate water chemistry readings

**Requested features**

- Measure total hardness and CYA
- Customizable notification settings
- Ability to cancel subscription easily
- Improved app stability and user experience


### Aiper

[App page](https://appshunter.io/ios/app/aiper/id6474955418)

Manage your pool cleaners and irrigation devices from one app. Create custom scenes for different areas, schedule cleanings, and optimize watering for a vibrant landscape while conserving water.

**Highlights:** Unified pool and irrigation device management, Multi-yard scenario support, Intelligent pool cleaning automation, AI Navium™ and Visual Mode for pool cleaning, Customized irrigation schedules, Water conservation features

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 🚀 Effective pool cleaning performance
- ⚡ Cordless and autonomous operation
- ☀️ Solar charging capability
- 🎯 Reliable hardware quality

**What reviewers complain about**

- 🐛 Frequent forced logouts requiring re-authentication
- 🔒 Excessive privacy requirements and data collection
- 📱 Single device login restriction (kicks off other users)
- 📢 Persistent intrusive advertisements and pop-ups
- 🔌 App disconnects when robot is underwater

**Reported bugs**

- Login credentials not recognized after updates
- App fails to connect to devices
- Cleaning records not displaying or disappearing after updates
- Account registration impossible or code validation timeout
- Firmware update failures

**Requested features**

- Scheduling/timer functionality for automated operation
- Multi-device simultaneous login support
- Manual control when robot is underwater
- Pause/stop operation from app
- Customizable watering zones and amounts


## Frequently asked questions

### Is Sutro free?

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

### Is Aiper free?

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

### Which has better reviews, Sutro or Aiper?

Aiper is rated higher. Sutro averages 3.9 out of 5 from 175 ratings, while Aiper averages 4.1 from 260 ratings.

### Do Sutro or Aiper have ads?

Neither Sutro nor Aiper shows ads.

### Which is updated more often, Sutro or Aiper?

Sutro ships an update every 2 months, and Aiper every 3 weeks. Most recently, Sutro was updated on June 10, 2026 and Aiper on September 24, 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.*