Nudge vs SkyDuo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nudge
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.
- Send photo requests (nudges)
- Receive photos from friends
- Timed photo capture
- Unique social photo sharing
- No direct camera launch button
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Nudge is a fun little photo app with a different spin, on Nudge you control when your friend takes a photo. Send your friend a nudge and get back a photo of what they are up to. Tips for young nudgers: - There is no launch camera button on Nudge, the camera only launches when a friend first nudges you. - Be quick! Nudges expire so snap that photo before time runs out. There is lots more to discover about Nudge but we won't tell you everything for that is for us to know and you to find out. Enjoy!
SkyDuo
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.
- 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
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SkyDuo is a FREE Video Chat and Messaging App + WiFi Phone App. Live face to face video chat with friends and family for free, even if they are in another country. Get multiple phone numbers for unlimited calling and texting, to any mobile or landline. It's cool and easy, private and secure, reliable and fun. • Free Video Calls across Any Device Work across mobile, tablet or any smart device. Just send an invite link to your friend, then start your free face time video chat. Samsung, LG, Huawei, Xiaomi, Vivo, Oppo, TCL, Micromax, Realme, Motorola, all supported. • Private Second Phone Numbers Tired of giving out your real phone number? Tired of carrying multiple phones with multiple SIM cards? Tired of expensive GSM contracts and bills? Download SIMless SkyDuo, say goodbye to old fashion. One App, Multiple Real US/CA/UK phone numbers for your choice. • Cheap or Free International Calls & Texts Beyond free online video chats, wifi phone call & text to any mobile/landline phone numbers in over 200 countries and regions are provided at super low rates. Earn your daily free credits, then enjoy free wifi phone calls, free sms/mms, free txt now. • Fun Messaging Fun communication should be without limits! Express yourself with customized emoticons, stickers, GIFs, doodles on duo face, play games together while duo video chat, send pictures, voices, videos or locations messages. Camera shy? Make voice calls to anyone, any number in the world. • Private and Secure All calls are end-to-end encrypted. And messages are encrypted in-line with international security standards (TLS). Third parties can never access your messages. And SkyDuo does not store your messages. They will be deleted as soon as they are received by the recipient. Delete your account, without leaving a trace. Enjoy your safe and secure SkyDuo chat. • Low Data Usage Save 40-90% of the vowifi and voip network traffic in real-time calls. Especially on cellular networks, saving your data money a lot. • Is SkyDuo Really FREE ? Yes. Free to make video calls and messages. FREE to get credits everyday. Check-in, watch videos to earn free credits, play games to win free credits, complete various reward tasks to get free credits like making calls or sending texts. All paid premium services could be redeemed by free credits. It's totally free as you use it more. • Amazing Premium Features Upgrade to SkyDuo Premium, enjoy all exclusive features including private numbers, ad-free, call recording, monthly free credits bonus, 2x free daily credits tasks, better price of out call/text, special ringtones and themes, etc. Download the app and enjoy your SkyDuo life right now! Much More Goodies: - Add 2nd, 3rd line to your phone/tablet, turn your devices into real dual mobile phone. Alter the number at any time. Switch a number, switch a life! Deliveries, business, posting online, sales people, business partners, shopping online, selling items on Craigslist, Etsy, Ebay, never embarrassed. Level your living a next plus! - Note: If Push notification is not enabled, you may not receive messages and calls. 911 is not supported. If any area rates are too high, contact us. We will work on it. And you might win a support reward! Subscriptions are for premium, which can be purchased in-app and be renewed weekly, monthly or yearly on your choice. Payment will be charged to your iTunes account. Subscription automatically renews within 24-hours prior to the end of the current period, unless auto-renew is turned off at least 24 hours before that. You may manage your subscriptions and turn off auto-renewal by going to your iTunes Account Settings. No cancellation of the current subscription is allowed during active subscription. See More in Terms and Privacy Policy https://www.phoneduo.app/terms.html, https://www.phoneduo.app/privacy.html. We are excited to hear your feedback on the app! Contact Us: support@phoneduo.app
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Nudge | SkyDuo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (2K ratings) — better |
| Positive reviews | 90.5% of reviews — better | 77.8% of reviews |
| Number of ratings | — | 2K — better |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 109 MB |
| Age rating | 12+ | 12+ |
| Developer | BooYarr | Ningbo Juphoon System Software Co., Ltd. |
Customer experience
Nudge
SkyDuo
Bugs and requests
Nudge
Not enough reviews yet to summarise bugs or requests.
SkyDuo
Reported bugs
3 issues- 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
4 requests- Add group chat option
- Allow texting with WiFi
- Add more options like filters, screen sharing
- Add ability to call two people on one call
In-app purchases
Nudge
No in-app purchases
SkyDuo
- Premium Lite Weekly$2.997 Days
- US Number Plan Weekly$3.997 Days
- 1 Line Unlimited Plan Monthly$4.991 Month
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- US&CA Essential Plan Monthly$4.991 Month
- US&CA Basic Plan Monthly$7.991 Month
- US Number Plan Monthly$7.991 Month
- Premium Monthly$9.991 Month
- Premium Monthly1 Month trial$9.991 Month
- Dual Phone 10000 credits$1.99
- Dual Phone 25000 credits$4.99
