# SIMPlus vs WatchPower

The clearest difference is rating: SIMPlus at 3.6 against WatchPower's 2.5. SIMPlus also leads on update cadence (fortnightly vs every 3 months) and review sentiment (41% vs 17%). WatchPower's advantage is in-app purchases (none vs 10) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. SIMPlus sells 10 one-off in-app purchases. WatchPower asks for nothing beyond the download.

SIMPlus holds the better App Store score, 3.6 against 2.5. Both are backed by a comparable volume of ratings — 157 and 73 respectively. Written reviews point the same way: 41% of SIMPlus's written reviews are positive against 17% of WatchPower's.

SIMPlus ships an update fortnightly, WatchPower every 3 months. The most recent releases landed on September 21, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | SIMPlus | WatchPower |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (157 ratings)](https://appshunter.io/ios/app/simplus/id1122489699/reviews)** | [2.5 (73 ratings)](https://appshunter.io/ios/app/watchpower/id1487569321/reviews) |
| Number of ratings | **157** | 73 |
| Positive reviews | **41.2% of reviews** | 17.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 27 MB | 22 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [均 魏](https://appshunter.io/developer/686984880) | [祥梯 孟](https://appshunter.io/developer/1070155084) |

## What reviewers say

### SIMPlus

[App page](https://appshunter.io/ios/app/simplus/id1122489699)

This app enables dual SIM functionality on your iPhone, allowing you to use two numbers simultaneously. It also provides mobile phone capabilities for iPads and iPods, with integrated VoIP-PSTN calling for when Bluetooth devices are not connected.

**Highlights:** Dual SIM iPhone functionality, Mobile functionality for iPad/iPod, BLE-enabled connectivity, VoIP-PSTN call integration, Use two numbers simultaneously

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 minutes VOIP on SIMPlus | $0.99 | one-time |
| SIMPlus Widget | $0.99 | one-time |
| 20 minutes VOIP on SIMPlus | $1.99 | one-time |
| Remote Device Server Access 30 Days | $1.99 | one-time |
| 60 minutes VOIP on SIMPlus | $4.99 | one-time |
| 100 minutes voice call | $7.99 | one-time |
| 120 minutes VOIP on SIMPlus | $7.99 | one-time |
| 270 minutes VOIP on SIMPlus | $14.99 | one-time |
| Remote Device Server Access 1 Year | $19.99 | one-time |
| Remote Device Lifetime Access | $49.99 | one-time |

**What reviewers like**

- 📱 Dual SIM functionality on iPhone
- 🚀 Fast call and message delivery
- 💰 Saves money on roaming charges
- 🎨 Improved UI design in recent updates
- 📞 Call recording feature

**What reviewers complain about**

- 🔌 Requires app to stay open in background
- 🔊 Poor call audio quality and voice issues
- 📉 Frequent disconnections
- 🐛 Multiple connectivity problems
- 📱 Incompatible with some iOS versions

**Reported bugs**

- Call audio not working or distorted
- Device disconnects automatically after 1-2 minutes
- Bluetooth connection drops during calls
- Microphone not working with Bluetooth devices
- Network settings revert after saving

**Requested features**

- USSD code support for balance checks
- Apple Watch app integration
- Dark mode theme
- Conference call functionality
- Call waiting feature


### WatchPower

[App page](https://appshunter.io/ios/app/watchpower/id1487569321)

Monitor off-grid inverters remotely via Wi-Fi. View device status, configure settings, receive alerts for warnings or alarms, and record historical data.

**Highlights:** Monitor inverter status, Configure device settings, Receive warning/alarm notifications, Record device data history, Wi-Fi module integration

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💻 Useful for monitoring and configuring solar/battery systems
- 🔧 Allows remote configuration of inverter settings
- 🤖 Reliable when it works

**What reviewers complain about**

- 🐛 Frequent connection issues and data delays
- 🕰️ Slow refresh rate and outdated information
- 🤔 Inconsistent and unreliable performance
- 📊 Lack of historical data and graphing features
- 🤯 Difficult setup and registration process

**Reported bugs**

- Devices disappearing from the app
- Incorrect battery capacity and power readings
- Crashes and freezes when trying to access data

**Requested features**

- Add real-time monitoring and updates
- Improve user interface and add more visualizations
- Implement push notifications for important events
- Allow password recovery and account management
- Add support for Bluetooth connectivity


## Frequently asked questions

### Is SIMPlus free?

SIMPlus is free to download, with in-app purchases available.

### Is WatchPower free?

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

### Which has better reviews, SIMPlus or WatchPower?

SIMPlus is rated higher. SIMPlus averages 3.6 out of 5 from 157 ratings, while WatchPower averages 2.5 from 73 ratings.

### Do SIMPlus or WatchPower have ads?

Neither SIMPlus nor WatchPower shows ads.

### Which is updated more often, SIMPlus or WatchPower?

SIMPlus ships an update fortnightly, and WatchPower every 3 months. Most recently, SIMPlus was updated on September 21, 2026 and WatchPower on August 31, 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.*