NativeScript Preview vs NumBan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NativeScript Preview
Instantly preview your NativeScript projects directly on your mobile device. See your native UI elements, from buttons to complex 2D/3D canvas renderings, come to life as you develop.
- Live preview on device
- Native UI element rendering
- 2D canvas rendering
- 3D canvas rendering
- Cross-platform development tool
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Preview NativeScript projects on your device – from basic native user interface elements like buttons, switches and sliders, to 2d/3d canvas renderings.
NumBan
This app helps you combat scam callers by reporting suspicious callback numbers. It extracts numbers from voicemails, generates reports, and tracks successful disconnections. Compete on a leaderboard for confirmed 'kills' and help take down scam operations.
- Extracts callback numbers from voicemails
- Generates verified abuse reports
- Routes reports through a NumBan alias
- Tracks reported numbers for disconnection
- Public leaderboard for confirmed kills
- Provides links to FTC and FCC complaint sites
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NumBan hits the callback number a scam voicemail asks you to dial. Caller ID is easy to spoof. The number that the scammers need you to call back is not. Share the voicemail or a screenshot of one from the iPhone Phone app. NumBan extracts that spoken number, prepares a verified abuse report, and routes it through a NumBan-managed alias. Your personal contact info is never included. After enough independent reports, the complaint is sent to the carrier or RespOrg that hosts the number. NumBan re-checks periodically. When the number reports that it has been disconnected, that is a kill. Kills rank you on the leaderboard. How to file a hit • Open Phone and find the voicemail • Tap Share and choose NumBan • Sign in with your US mobile number if you have not already • Confirm the callback number when asked • Optionally share a screenshot to verify the timestamp when the voicemail was received What you get • A report history for every number you have hit • Push when a number you reported looks dead • A public leaderboard ranked by confirmed kills, not raw filings • Copy-ready notes plus Safari links to FTC ReportFraud and FCC consumer complaints NumBan Pro Free accounts can file 3 verified reports per calendar month. Pro removes that cap and unlocks extra reporting tools in the app. • NumBan Pro Monthly — $0.99 per month • NumBan Pro Yearly — $9.99 per year Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel in Settings → Apple ID → Subscriptions, or in the app under Manage subscription. Privacy Reports go out from a NumBan relay address. Voicemail audio and screenshots stay private evidence and is never published. Public number pages on numban.com show only aggregate, redacted data. NumBan is a consumer reporting tool, not a law firm, and does not guarantee that a carrier will disconnect a number. Support: https://numban.com/help Privacy: https://numban.com/privacy Terms: https://numban.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: NativeScript Preview at none against NumBan's 2. NativeScript Preview also leads on ratings volume (5 vs 1) and device support (4 vs 1). NumBan's advantage is update cadence (every 5 days vs every 3 weeks) and rating (5.0 vs 4.8). On price and ads 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. NumBan sells 2 in-app purchases, starting at $0.99 per month. NativeScript Preview asks for nothing beyond the download.
NumBan holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: NativeScript Preview has 5 ratings behind it against 1, so its average is the more settled of the two.
NativeScript Preview ships an update every 3 weeks, NumBan every 5 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | NativeScript Preview | NumBan |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 19.4% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod, Vision Pro — better | iPhone |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 151 MB | 23 MB |
| Age rating | 4+ | 9+ |
| Developer | nStudio LLC | Ammon Brown |
Customer experience
NativeScript Preview
NumBan
In-app purchases
NativeScript Preview
No in-app purchases
NumBan
- English$0.991 Month
- English$9.991 Year
