# SIMPlus vs SLS Echon

The clearest difference is rating: SLS Echon at 5.0 against SIMPlus's 3.6. SLS Echon also leads on in-app purchases (none vs 10) and update cadence (daily vs fortnightly). SIMPlus's advantage is ratings volume (167 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

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

SLS Echon holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: SIMPlus has 167 ratings behind it against 1, so its average is the more settled of the two.

SIMPlus ships an update fortnightly, SLS Echon daily. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SIMPlus | SLS Echon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (167 ratings)](https://appshunter.io/ios/app/simplus/id1122489699/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sls-echon/id6782618500/reviews)** |
| Number of ratings | **167** | 1 |
| Positive reviews | 41.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 41 MB | 11 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [均 魏](https://appshunter.io/developer/686984880) | [XINGYU LIANG](https://appshunter.io/developer/6782618502) |

## What reviewers say

### SIMPlus

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

This app transforms your iPhone into a dual SIM device, enabling mobile phone functionality on your iPad and iPod. It also offers VoIP-PSTN calling when a BLE device isn't connected.

**Highlights:** Dual SIM functionality on iPhone, Mobile functionality for iPad and iPod, VoIP-PSTN calling, BLE device integration, Call recording, International travel savings

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


### SLS Echon

[App page](https://appshunter.io/ios/app/sls-echon/id6782618500)

Easily buy tickets and schedule appointments for Echon Studio. Manage your visits and plan your experience with this convenient utility.

**Highlights:** Purchase tickets, Book appointments, Visit Echon Studio, Manage visits

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SIMPlus free?

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

### Is SLS Echon free?

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

### Which has better reviews, SIMPlus or SLS Echon?

SLS Echon is rated higher. SIMPlus averages 3.6 out of 5 from 167 ratings, while SLS Echon averages 5.0 from 1 ratings.

### Do SIMPlus or SLS Echon have ads?

Neither SIMPlus nor SLS Echon shows ads.

### Which is updated more often, SIMPlus or SLS Echon?

SIMPlus ships an update fortnightly, and SLS Echon daily. Most recently, SIMPlus was updated on November 11, 2026 and SLS Echon on October 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.*