# Onoff Numbers vs iCalcDbit 6

The clearest difference is price: Onoff Numbers at Free against iCalcDbit 6's $3.99. Onoff Numbers also leads on update cadence (fortnightly vs every 31 months) and chart position (#169 vs unranked). iCalcDbit 6's advantage is in-app purchases (none vs 14). On ads, device support and iOS requirement there is nothing between them.

Onoff Numbers is free to download; iCalcDbit 6 costs $3.99 up front. Onoff Numbers sells 10 in-app purchases, starting at $7.99 per month. iCalcDbit 6 asks for nothing beyond the download.

Onoff Numbers ships an update fortnightly, iCalcDbit 6 every 31 months. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Onoff Numbers | iCalcDbit 6 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.6 (790 ratings)](https://appshunter.io/ios/app/onoff-numbers/id942996042/reviews)** | — |
| Number of ratings | **790** | — |
| Positive reviews | 43.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 31 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#169** | — |
| Size | 319 MB | 1 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ONOFFAPP](https://appshunter.io/developer/939656604) | [Fabien NISSEN](https://appshunter.io/developer/498199668) |

## What reviewers say

### Onoff Numbers

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

**Currently charting:** #169 Top Grossing · Utilities (US App Store)

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


### iCalcDbit 6

[App page](https://appshunter.io/ios/app/icalcdbit-6/id1550989744)

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

**In-app purchases:** none


## Frequently asked questions

### Is Onoff Numbers free?

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

### Is iCalcDbit 6 free?

iCalcDbit 6 costs $3.99, with no in-app purchases.

### Do Onoff Numbers or iCalcDbit 6 have ads?

Neither Onoff Numbers nor iCalcDbit 6 shows ads.

### Which is updated more often, Onoff Numbers or iCalcDbit 6?

Onoff Numbers ships an update fortnightly, and iCalcDbit 6 every 31 months. Most recently, Onoff Numbers was updated on October 19, 2026 and iCalcDbit 6 on October 13, 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.*