Comparison

Onoff Numbers vs nGeneCrypto

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Onoff Numbers

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
Read full description

What if you could get a second number in minutes, without the hassle of using a second phone or a second SIM card, but just by downloading an app? You dreamed of it, Onoff made it happen! You will want to use a second number for: Having a separate professional line - separate your professional and personal life Protecting your privacy when you are online - your safety is our priority Selling goods online in total confidence - safely communicating with your potential buyers Carrying only one phone on you - less weight in your pocket, less hassle between switching the phones Being able to use your phone number from any smartphone and even from your web browser - we want you to have a number as flexible as your email! Make low-cost international calls - the world is just one call away With Onoff, you also have: -Calls and SMS -Integrated visual voicemail -Voice messages -Synchronization of all your contacts list -Possibility of porting an existing number, in order to use it in the Onoff App -An app compatible with all SIM cards to always call on the best network -Numbers from more than 30 countries available And there’s much more ! You can follow us on: Facebook - Linkedin - Twitter - Instagram In the application, you can subscribe to a number or a calling plan, the prices of which vary depending on the nationality or region chosen, as well as the duration (1, 3 or 12 months). Payment will be made through your iTunes account after confirmation of purchase, and will be withdrawn 24 hours before the end of each billing cycle. You can deactivate automatic renewal in the settings of the App Store after purchase, at least 24 hours before the end of the current subscription period. With your Onoff number, you can make unlimited calls throughout Europe. For communication outside of Europe, you can also purchase credits, valid for any destination! Any demonstration product offered within promotions will be automatically terminated upon first purchase. We cannot guarantee the systematic compatibility of numbers with verification services by SMS. Onoff: several numbers in one application, without changing the SIM card! See https://www.onoff.app/en/privacy-policy for the Privacy Policy. Onoff app Terms and Conditions can be found at https://www.onoff.app/en/terms-conditions/

About

nGeneCrypto

Features
Read full description

nGeneCrypto is a native iPhone and Apple Watch market research workspace for crypto-focused users, researchers, and software builders. Monitor crypto assets alongside macro, liquidity, rates, foreign-exchange, metals, and equity indicators that can influence digital-asset markets. Build custom groups, star Favorites, compare compact charts, open focused dashboards, and carry selected items onto iPhone widgets and Apple Watch complications. MARKETS AND DASHBOARDS • Market board for Bitcoin, Ethereum, Solana, XRP, and user-added assets • Focused dashboards for Bitcoin, Ethereum, Solana, XRP, and liquidity conditions • Inline charts with 24H, 1W, 1M, 3M, 6M, 1Y, and All ranges • Macro context including DXY, VIX, repo rates, U.S. Treasury yields and spreads, FX, metals, and equities • Custom groups with reordering, hiding, reset, search, Favorites, and swipe-to-remove controls • Manual refresh and configurable chart-loading behavior IPHONE FAVORITE WIDGETS • Medium and large Home Screen widgets for starred market items • Inline, circular, and rectangular Lock Screen widgets • Compact single-line layouts that use available vertical space efficiently • Automatic rotation only when the number of Favorites exceeds the current widget capacity • Configurable 5, 10, 15, 30, or 60-minute rotation intervals • Optional background price refresh with 15, 30, or 60-minute earliest-request settings • Last-known-good values remain available when a refresh is delayed, cancelled, unavailable, or unsuccessful • iOS and WidgetKit control exact background and widget update timing APPLE WATCH • Companion app for viewing and selecting iPhone Favorites • Rotating Favorites complication with up to three items • Fixed Favorites complication with left, middle, and right positions • Threshold alarms with haptic patterns, optional notifications, custom thresholds, and intervals • Favorite data sync from the paired iPhone; watchOS and WidgetKit control exact update timing BTC KEYS • Local BIP39 mnemonic generation • Bitcoin key derivation and address verification • Personal-custody education • Generated secrets are not transmitted • Not a wallet and not intended for real-fund use OPTIONAL ETHEREUM LABS Enable individual add-ons in Settings > Ethereum Labs: • ETH ERP — Ethereum standards and deterministic workflow simulations • Sepolia — testnet onboarding, live public-state reads, Native ETH dry runs, and ERC-20 dry runs • Mainnet Lab — read-only Ethereum Mainnet ERC-20 state inspection and EVM dry runs Ethereum Labs use public addresses and RPC endpoints only. They do not request private keys or seed phrases, connect to a wallet, sign transactions, broadcast transactions, move ETH or tokens, pay gas, create transaction hashes, or change blockchain state. nGeneCrypto is designed for research, education, software exploration, and market context. It does not provide financial, investment, tax, legal, brokerage, exchange, trading, custody, or money-transmission services. Market, dealer, widget, and public-chain data may be delayed, unavailable, inconsistent, cached, or provider-dependent. Dealer pages may require manual browser verification. Important information should be independently verified.

Screenshots

Onoff Numbers4 screens
nGeneCrypto4 screens

Verdict

The call

The clearest difference is in-app purchases: nGeneCrypto at none against Onoff Numbers's 14. Onoff Numbers's advantage is chart position (#186 vs unranked) and iOS requirement (16.0 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Onoff Numbers ships an update fortnightly, nGeneCrypto every 2 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 8 level
Onoff Numbers versus nGeneCrypto: the parameters behind the verdict, then further details
ParameterOnoff NumbersnGeneCrypto
PriceFreeFree
Rating4.6 (790 ratings) — better—
Positive reviews43.4% of reviews—
Number of ratings790 — better—
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#186 — better—
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS16.0 — better26.0
Further details — not scored
Size319 MB12 MB
Age rating4+4+
DeveloperONOFFAPPHyunsuk Roh

Bugs and requests

Onoff Numbers

Reported bugs

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

Requested features

4 requests
  • Add more country support
  • Improve call and SMS reliability
  • Introduce VoIP calling
  • Offer better customer support

nGeneCrypto

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Onoff Numbers

Subscriptions4
  • Onoff Premium7 Days trial$7.991 Month
  • 1 month$10.991 Month
  • 1 month$17.991 Month
Show 1 more
  • 1 month$21.491 Month
One-time6
  • 100 credits$1.99
  • 1000 credits$9.99
  • 1 month$10.99
Show 3 more
  • 1 month$12.99
  • 3 month$12.99
  • 1 month2 variants$17.99
None

nGeneCrypto

No in-app purchases

Questions

Is Onoff Numbers free?
Onoff Numbers is free to download, with in-app purchases available.
Is nGeneCrypto free?
nGeneCrypto is free to download, with no in-app purchases.
Do Onoff Numbers or nGeneCrypto have ads?
Neither Onoff Numbers nor nGeneCrypto shows ads.
Which is updated more often, Onoff Numbers or nGeneCrypto?
Onoff Numbers ships an update fortnightly, and nGeneCrypto every 2 weeks. Most recently, Onoff Numbers was updated on October 15, 2026 and nGeneCrypto on October 14, 2026.

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