# Watt for Smart Devices vs Sullivan County Library

The clearest difference is in-app purchases: Sullivan County Library at none against Watt for Smart Devices's 7. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Watt for Smart Devices sells 7 in-app purchases, starting at $0.49 per month. Sullivan County Library asks for nothing beyond the download.

Watt for Smart Devices ships an update fortnightly, Sullivan County Library every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Watt for Smart Devices | Sullivan County Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (73 ratings)](https://appshunter.io/ios/app/watt-for-smart-devices/id1465004830/reviews)** | — |
| Number of ratings | **73** | — |
| Positive reviews | 51.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 63 MB | 49 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tiago Mendes](https://appshunter.io/developer/1235886918) | [Sullivan County Library](https://appshunter.io/developer/1738474619) |

## What reviewers say

### Watt for Smart Devices

[App page](https://appshunter.io/ios/app/watt-for-smart-devices/id1465004830)

Unify control of your TP-Link Kasa and Tapo smart devices in one intuitive app. Monitor energy usage with detailed charts, manage devices with Siri voice commands, and utilize features like Night Mode and custom spaces for effortless smart home management.

**Highlights:** Unified Kasa & Tapo device control, Energy consumption monitoring with charts, Siri voice control for devices, Night Mode for device LEDs, Organize devices by spaces/rooms, Home screen widgets for quick access

**Features:** Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Marshmallow | $0.49 | per month |
| Buy Me a Chocolate Bar | $0.99 | per month |
| Buy Me a Coffee | $1.99 | per month |
| Buy Me a Bag of Marshmallows | $4.99 | per year |
| Buy Me a Pack of Chocolate Bar | $8.99 | per year |
| Yearly 4x more support to App! | $18.49 | per year |
| Buy Me a Bag of Coffee | $18.49 | per year |

**What reviewers like**

- 📊 Better energy monitoring than official Kasa app
- 🎤 Siri integration for voice control
- 👍 Intuitive user interface and easy setup
- 💡 Advanced graphical data visualization
- 🔄 Multi-device control in single app

**What reviewers complain about**

- 💰 Requires subscription for full functionality
- 🐛 Frequent device recognition failures
- 📷 No camera support (Tapo/Kasa cameras)
- 🔐 Requires sharing TP-Link login credentials
- 📉 Unreliable data display and chart rendering

**Reported bugs**

- Voice commands return 'Something went wrong' error
- Devices disappear after app updates
- Session expiration errors requiring re-login
- Chart data only displays in year view
- Graphs curve back on themselves and show nonsense

**Requested features**

- Camera support for Tapo and Kasa cameras
- One-time purchase option instead of subscription
- Hourly power consumption data granularity
- Peak and off-peak electricity rate configuration
- Device renaming with custom names


### Sullivan County Library

[App page](https://appshunter.io/ios/app/sullivan-county-library/id6480207681)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Watt for Smart Devices free?

Watt for Smart Devices is free to download, with in-app purchases available.

### Is Sullivan County Library free?

Sullivan County Library is free to download, with no in-app purchases.

### Do Watt for Smart Devices or Sullivan County Library have ads?

Neither Watt for Smart Devices nor Sullivan County Library shows ads.

### Which is updated more often, Watt for Smart Devices or Sullivan County Library?

Watt for Smart Devices ships an update fortnightly, and Sullivan County Library every 3 weeks. Most recently, Watt for Smart Devices was updated on October 31, 2026 and Sullivan County Library 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.*