Comparison

Nexus universal calculator vs WillOS

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

Head to head
About

Nexus universal calculator

A smart calculator that remembers your calculations, allows you to reuse results in new formulas, and includes unit and currency conversion. It offers cloud sync for seamless access across devices and a clean design for everyday use, budgeting, and studying.

Highlights
  • Calculator with history
  • Smart formula builder
  • Unit and currency converter
  • Cloud sync across devices
  • Clean and simple design
  • Reuse past results as variables
Features
Read full description

Universal smart calculator that keeps your history, helps you create formulas, and saves you time every day. It is a powerful and easy to use calculator that remembers your calculations, lets you reuse results in new formulas, and includes a built in unit and currency converter. It is designed for everyday use, budgeting, studying, business math, and any situation where you want more than a basic calculator. KEY FEATURES 1. Calculator With History Every calculation is saved automatically. You can name your results and reuse them in new expressions. No more retyping numbers or losing your work. 2. Smart Formula Builder Use previous results like variables. Create simple or advanced expressions such as salary minus expenses or income plus tax. Perfect for planning, budgeting, and quick financial math. 3. Unit and Currency Converter Convert length, weight, temperature, volume, area, speed, and more. Get real time currency exchange rates and convert money instantly. 4. Cloud Sync Your calculations and formulas stay with you across all your devices. Simple, secure, and fast. 5. Clean and Simple Design Fast input, clear display, and an interface made for both quick math and longer calculations. TERMS OF USE: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WillOS

This productivity tool helps users organize their time and prioritize tasks. It offers features to stay aware of time, focus on high-value activities, and manage tasks across multiple devices.

Highlights
  • Time awareness
  • Task prioritization
  • Cross-device task management
  • Organized time management
Features
Read full description

For J-types, P-types who want to be more J-like, or anyone who wants their time management to be well-organized. This tool can give you a hand and help you get your act together. · Stay aware of time at all times · Constantly remind yourself to prioritize high-value tasks · Want to view your tasks across multiple devices anytime, anywhere

Screenshots

Nexus universal calculator4 screens
WillOS4 screens

Verdict

The call

The clearest difference is price: Nexus universal calculator at Free against WillOS's $3.99. Nexus universal calculator also leads on update cadence (weekly vs every 2 weeks). WillOS's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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

Nexus universal calculator is free to download; WillOS costs $3.99 up front. Nexus universal calculator sells 3 in-app purchases, starting at $2.99 per month and WillOS sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Nexus universal calculator ships an update weekly, WillOS every 2 weeks. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Nexus universal calculator versus WillOS: the parameters behind the verdict, then further details
ParameterNexus universal calculatorWillOS
PriceFree — better$3.99
Rating5.0 (7 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings7 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size67 MB6 MB
Age rating4+4+
DeveloperNataliia Vereshchak艺景 张

Customer experience

Nexus universal calculator

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

WillOS

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Nexus universal calculator

Subscriptions2
  • Premium Month$2.991 Month
  • Premium year1 Month trial$9.991 Year
One-time1
  • Lifetime Premium Features$199.00
5 purchases

WillOS

One-time5
  • Wishing Well (人・ω・。)2 variants$0.99
  • Fuel me (//ω//)2 variants$2.99
  • Feed me (//ω//)$4.99
Show 2 more
  • PRO$6.99
  • Feed me (//ω//)$6.99

Questions

Is Nexus universal calculator free?
Nexus universal calculator is free to download, with in-app purchases available.
Is WillOS free?
WillOS costs $3.99, and also offers in-app purchases.
Do Nexus universal calculator or WillOS have ads?
Nexus universal calculator shows ads; WillOS does not.
Which is updated more often, Nexus universal calculator or WillOS?
Nexus universal calculator ships an update weekly, and WillOS every 2 weeks. Most recently, Nexus universal calculator was updated on October 17, 2026 and WillOS on October 9, 2026.

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