# Nudge vs SkyDuo

The clearest difference is in-app purchases: Nudge at none against SkyDuo's 10. Nudge also leads on review sentiment (90% vs 78%). SkyDuo's advantage is iOS requirement (12.0 vs 14.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SkyDuo sells 10 in-app purchases, starting at $2.99 per 7 days. Nudge asks for nothing beyond the download.

Nudge ships an update every 2 weeks, SkyDuo every 11 days. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Nudge | SkyDuo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (2K ratings)](https://appshunter.io/ios/app/skyduo-video-calling-and-chat/id1574850767/reviews)** |
| Number of ratings | — | **2K** |
| Positive reviews | **90.5% of reviews** | 77.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 109 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [BooYarr](https://appshunter.io/developer/363463299) | [Ningbo Juphoon System Software Co., Ltd.](https://appshunter.io/developer/792612356) |

## What reviewers say

### Nudge

[App page](https://appshunter.io/ios/app/nudge/id609233616)

This app allows you to send a "nudge" to a friend, prompting them to take a photo of their current activity. You then receive the photo, offering a unique way to share moments and see what your friends are up to in real-time.

**Highlights:** Send photo requests (nudges), Receive photos from friends, Timed photo capture, Unique social photo sharing, No direct camera launch button

**In-app purchases:** none


### SkyDuo

[App page](https://appshunter.io/ios/app/skyduo-video-calling-and-chat/id1574850767)

Connect with friends and family globally through free video calls and messaging. This app also provides secondary phone numbers for private calling and texting, offering a secure and cost-effective communication solution.

**Highlights:** Free video calls across devices, Private second phone numbers, Cheap international calls and texts, Fun messaging with stickers and GIFs, End-to-end encrypted calls and messages, Low data usage for calls

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lite Weekly | $2.99 | per 7 days |
| US Number Plan Weekly | $3.99 | per 7 days |
| 1 Line Unlimited Plan Monthly | $4.99 | per month |
| US&CA Essential Plan Monthly | $4.99 | per month |
| US&CA Basic Plan Monthly | $7.99 | per month |
| US Number Plan Monthly | $7.99 | per month |
| Premium Monthly | $9.99 | per month |
| Premium Monthly | $9.99 | per month |
| Dual Phone 10000 credits | $1.99 | one-time |
| Dual Phone 25000 credits | $4.99 | one-time |

**What reviewers like**

- 👍 Good app for Apple to Android calling
- 🚀 Duo has good quality video and allows drawing/doodling
- 👍 Wonderful video chat app
- 👍 Great video and sound quality
- 👍 Highly recommended for communication with family/friends

**What reviewers complain about**

- 🐛 App does not work, phone number does not work, app closes
- 🐛 App won't make any phone calls
- 🐛 Misleading, need to have contacts registered before use
- 🐛 Wrong app, not what was expected
- 🔋 Audio quality could be improved

**Reported bugs**

- App crashes, deletes itself, and doesn't work
- Can't choose or change password
- Payment issues, money deducted but no credit in app

**Requested features**

- Add group chat option
- Allow texting with WiFi
- Add more options like filters, screen sharing
- Add ability to call two people on one call


## Frequently asked questions

### Is Nudge free?

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

### Is SkyDuo free?

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

### Do Nudge or SkyDuo have ads?

Neither Nudge nor SkyDuo shows ads.

### Which is updated more often, Nudge or SkyDuo?

Nudge ships an update every 2 weeks, and SkyDuo every 11 days. Most recently, Nudge was updated on November 1, 2026 and SkyDuo on November 8, 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.*