# Onoff Numbers vs OpusTel

The clearest difference is review sentiment: OpusTel at 80% against Onoff Numbers's 43%. OpusTel also leads on in-app purchases (none vs 14) and rating (5.0 vs 4.6). Onoff Numbers's advantage is update cadence (fortnightly vs every 14 months) and ratings volume (788 vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Onoff Numbers sells 10 in-app purchases, starting at $7.99 per month. OpusTel asks for nothing beyond the download.

OpusTel holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Onoff Numbers has 788 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 43% of Onoff Numbers's written reviews are positive against 80% of OpusTel's.

Onoff Numbers ships an update fortnightly, OpusTel every 14 months. The most recent releases landed on September 28, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | Onoff Numbers | OpusTel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (788 ratings)](https://appshunter.io/ios/app/onoff-numbers/id942996042/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/opustel/id945641896/reviews)** |
| Number of ratings | **788** | 6 |
| Positive reviews | 43.4% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 14 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 318 MB | 98 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ONOFFAPP OU](https://appshunter.io/developer/939656604) | [OpusTel](https://appshunter.io/developer/945641895) |

## What reviewers say

### Onoff Numbers

[App page](https://appshunter.io/ios/app/onoff-numbers/id942996042)

Get a second phone number instantly through an app, without needing a new SIM card or device. Keep your personal and professional lives separate, protect your privacy, and make international calls at low costs. Manage calls, SMS, and voicemail all in one place.

**Highlights:** Second phone number, Separate professional and personal lines, Privacy protection, Low-cost international calls, Integrated visual voicemail, Port existing numbers, Numbers from 30+ countries

**Features:** Siri integration, Apple Wallet, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Onoff Premium | $7.99 | per month |
| 1 month | $10.99 | per month |
| 1 month | $17.99 | per month |
| 1 month | $21.49 | per month |
| 100 credits | $1.99 | one-time |
| 1000 credits | $9.99 | one-time |
| 1 month | $10.99 | one-time |
| 1 month | $12.99 | one-time |
| 3 month | $12.99 | one-time |
| 1 month | $17.99 | one-time |

**What reviewers like**

- 💯 Excellent app
- 🚀 Simple and easy to use
- 🔒 Secure and private
- 📱 Great for business/travel

**What reviewers complain about**

- 🐛 Unreliable service
- 🔒 Privacy concerns
- 💰 Expensive pricing
- 🚫 Limited functionality

**Reported bugs**

- Calls and texts not going through
- Account validation issues
- Frequent app crashes
- Syncing problems with contacts

**Requested features**

- Add more country support
- Improve call and SMS reliability
- Introduce VoIP calling
- Offer better customer support


### OpusTel

[App page](https://appshunter.io/ios/app/opustel/id945641896)

This app provides a real Swiss international telephone number for secure VoIP calls on iOS devices. It offers HD audio quality, free global calls between users, and call recording capabilities, all with a focus on user privacy.

**Highlights:** Real Swiss international telephone number, Secure VoIP calls, HD high-definition audio quality, Free global calls between users, Call recording, Conference calls, Automatic language selection

**In-app purchases:** none


## Frequently asked questions

### Is Onoff Numbers free?

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

### Is OpusTel free?

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

### Which has better reviews, Onoff Numbers or OpusTel?

OpusTel is rated higher. Onoff Numbers averages 4.6 out of 5 from 788 ratings, while OpusTel averages 5.0 from 6 ratings.

### Do Onoff Numbers or OpusTel have ads?

Neither Onoff Numbers nor OpusTel shows ads.

### Which is updated more often, Onoff Numbers or OpusTel?

Onoff Numbers ships an update fortnightly, and OpusTel every 14 months. Most recently, Onoff Numbers was updated on September 28, 2026 and OpusTel on August 29, 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.*