Comparison

Topup BTC vs Nova Mare YachtOS

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

Head to head
About

Topup BTC

Easily recharge any Flow phone or purchase plans using your credit/debit card or PayPal. Select a destination, choose an amount or plan, and enter payment details in a few simple steps.

Highlights
  • Recharge Flow phones
  • Purchase Flow plans
  • Credit/debit card payment
  • PayPal payment
  • Simple 3-step process
  • Repeat top-ups
Features
Read full description

Official Flow app to easily recharge any Flow phone or purchase plans using your credit/debit card or PayPal account Top up any Flow number in a new and simple way. You will be able to Top up an amount or select a plan as you wish. Top up the Flow number in just 3 simple steps: 1- Select Destination 2- Choose Amount or Plan 3- Enter your Payment details (Credit Card or Paypal) That's all. Your phone will be topped up faster than ever. Once you have made your first Top Up you will be able to repeat it just entering your payment details.

About

Nova Mare YachtOS

Features
Read full description

Nova Mare is the intelligent marine operating system built to make managing a vessel simpler, smarter, and more connected. Designed for captains, engineers, owners, and marine professionals, Nova Mare brings vessel intelligence, maintenance, diagnostics, documentation, parts, service, and operational information together in one powerful platform. Instead of searching through manuals, spreadsheets, service records, websites, and disconnected systems, Nova Mare puts the information you need at your fingertips. NOVA SENTINEL Monitor vessel health and gain intelligent insights into equipment, systems, maintenance needs, and potential issues before they become bigger problems. ASK NOVA Ask questions about your vessel, equipment, systems, maintenance, troubleshooting, or marine operations and get intelligent, context-aware assistance. BOATMD Troubleshoot marine equipment and system problems with AI-assisted diagnostics designed to help identify possible causes and guide you toward the next step. NOVA MAINTENANCE Organize equipment, service history, maintenance schedules, checklists, findings, and upcoming maintenance from one connected system. NOVA PARTS Search for marine parts and equipment without wasting hours jumping between suppliers and websites. NOVA SERVICE Find marine technicians, contractors, specialists, and service providers for the work your vessel needs. LIVE VESSEL Bring compatible vessel information into Nova Mare to create a more connected view of your vessel and its systems. VESSEL LIBRARY Keep manuals, documentation, service information, equipment records, and vessel knowledge organized and accessible. NOVA EXECUTIVE The intelligent command center that gives owners and management clear, real-time oversight of vessel performance, risk, operations, and financials in one place. ONE VESSEL. ONE SOURCE OF INTELLIGENCE. Nova Mare is designed around a simple idea: your vessel already generates an enormous amount of information. That information should not be scattered everywhere. Nova Mare brings it together so you can understand your vessel, maintain it, troubleshoot it, find what you need, and make better-informed decisions from one place. Less searching. Less fragmentation. More intelligence. Welcome to Nova Mare. Bringing Intelligence to the Seas.

Screenshots

Topup BTC4 screens
Nova Mare YachtOS4 screens

Verdict

The call

Topup BTC and Nova Mare YachtOS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Topup BTC ships an update fortnightly, Nova Mare YachtOS every 3 weeks. The most recent releases landed on October 27, 2026 and October 18, 2026 respectively.

ScorecardNo meaningful differences
Topup BTC versus Nova Mare YachtOS: the parameters behind the verdict, then further details
ParameterTopup BTCNova Mare YachtOS
PriceFreeFree
Rating4.5 (1.3K ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings1.3K — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.5 — better
Further details — not scored
Size71 MB14 MB
Age rating4+4+
DeveloperCable & Wireless Holdings, Inc.Gabriel Attenborough

Bugs and requests

Topup BTC

Reported bugs

2 issues
  • Login and payment processing issues
  • Incorrect plan and balance information

Requested features

2 requests
  • Allow custom data top-up amounts
  • Improve data rollover and expiration policies

Nova Mare YachtOS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Topup BTC

No in-app purchases

None

Nova Mare YachtOS

No in-app purchases

Questions

Is Topup BTC free?
Topup BTC is free to download, with no in-app purchases.
Is Nova Mare YachtOS free?
Nova Mare YachtOS is free to download, with no in-app purchases.
Do Topup BTC or Nova Mare YachtOS have ads?
Neither Topup BTC nor Nova Mare YachtOS shows ads.
Which is updated more often, Topup BTC or Nova Mare YachtOS?
Topup BTC ships an update fortnightly, and Nova Mare YachtOS every 3 weeks. Most recently, Topup BTC was updated on October 27, 2026 and Nova Mare YachtOS on October 18, 2026.

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