Comparison

FusionCalc Pro | Memo & Calc vs OnStage Timer Pro

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

Head to head
About

FusionCalc Pro | Memo & Calc

This calculator app allows you to save numbers as sticky notes for easy reuse in future calculations. It offers basic arithmetic, percentage functions, and a dark mode, all while working offline.

Highlights
  • Save numbers as reusable memos
  • Drag and drop memo functionality
  • Basic calculator operations
  • Percentage calculations
  • Offline functionality
  • Dark mode
Features
Read full description

· Drag and drop a number like post-it sticky notes to save it as a memo. Then reuse any number memo in your calculations. Looking for a fast, easy, basic calculator with intuitive memory function? You can use this calc app to manage shopping lists, expenses, calories, and more! Meet FusionCalc, the sticky notes memo calculator. Drag a number from the calculator to save it as a memo. Then, reuse it at any time in your future calculations. See why our handy calculator has been acclaimed as one of the fastest and most innovative calculator apps. ■ BASIC CALCULATOR Designed to save, drag, and reuse your numbers, our notes list calculator is perfect for busy professionals, pet parents, moms, and anyone who needs quick, efficient math! Here are the types of calculations you can do: · basic operations (addition, subtraction, multiplication, and division) · percentage · Tap twice to write memo on your number (Makes it easy for you to remember what the number was for). OFFLINE & DARK-MODE CALCULATIONS Make use of the eye-friendly dark mode when you do calculations at night. Also, don’t worry about having internet access since you can use the FusionCalc calculator offline. ■ A HANDY, VERSATILE CALCULATOR
◉ Great for Work & Business – Perfect for finance, invoices, sales, taxes, and budgets. ◉ For Moms & Parents – Grocery lists, school expenses, household budgets—made easy. ◉ For Pet Owners – Track pet care expenses, vet visits, pet food, and feeding schedules by using ◉ FusionCalc as your pet calculator. ◉ For Freelancers & Entrepreneurs: Track earnings, costs, and client invoices on the go.
◉ For Students & Teachers: Save equations and complex calculations for later reference. ◉ For anyone: stay organized – save calculations as sticky notes for later use. ■ FUSIONCALC APP FEATURES: • basic calculator • save numbers as memos for fast calculations • drag and drop number notes to use them in your calculations • calc sound (can be turned off) • dark mode • works offline • ad-free version Why settle for an ordinary calculator when you can have one that works smarter and faster? With FusionCalc you get the function and simplicity, but you can also save, drag, and reuse numbers effortlessly and manage lists with automatic sum calculations. ► Try FusionCalc for iPhone & iPad for FREE! ___________ FusionCalc FAQ: ∆ How is FusionCalc different from other calculators with history save?
FusionCalc is more than just a basic calculator offline app—it lets you save, drag, and reuse numbers instantly without needing to re-enter them. Perfect for multitaskers! ∆ Can I use FusionCalc for business calculations?
Yes! Our amount calculator is great for small business owners, freelancers, and accountants who need to track expenses, invoices, and budgets. ∆ Does FusionCalc work offline?
Yes! You can use all memory calculator features without an internet connection—great for travel, remote work, and on-the-go calculations. ∆ Is FusionCalc a free calculator?
Yes! You can use all core features of our number note list calculator for free, with an optional upgrade for an ad-free experience.

About

OnStage Timer Pro

This app provides a professional countdown timer for speakers and presenters, featuring large, readable displays with smart color cues. It includes templates for various speech types, rehearsal tools with delivery scores, and external display options.

Highlights
  • Large, readable countdown display
  • Smart stage color cues (green, yellow, red)
  • Ready-to-use templates for various speeches
  • Rehearsal and speech coaching with delivery score
  • Podium mode for landscape viewing
  • Apple Watch and Live Activities integration
  • External display support
Features
Read full description

OnStage Timer Pro — Professional Stage Timer + Speech Coach The all-in-one timer for speakers, presenters, and performers. Plan it, rehearse it, then nail your timing on stage. LARGE, READABLE COUNTDOWN A full-screen countdown visible from across the room — minutes, seconds, and percentage remaining at a glance. SMART STAGE COLORS Green, yellow, and red cues keep you on pace without thinking about it. READY-TO-USE TEMPLATES (NEW) One tap to set up the right timing for Toastmasters speeches, TED-style talks, sermons, panels, webinars, and lightning talks. REHEARSAL & SPEECH COACH (NEW) Practice your talk and get a Delivery Score — pace (words per minute), filler words, and timing — with progress trends so you improve every session. PODIUM MODE (NEW) Turn your phone to landscape, set it on the lectern, and glance down at a clean, giant countdown. APPLE WATCH & LIVE ACTIVITIES Control the timer from your wrist with haptic cues. See it on the Lock Screen and Dynamic Island. EXTERNAL DISPLAY Show the timer on a connected screen or iPad for the whole room. ALSO INCLUDED - Custom presets and themes - Overtime tracking - Sound and haptic alerts - Encouraging stage messages Perfect for keynotes, Toastmasters, sermons, conferences, classrooms, and performances. Privacy Policy: https://andyarevalo.com/privacy.html Terms of Service: https://andyarevalo.com/terms.html Support: https://andyarevalo.com/support.html — — — Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://andyarevalo.com/privacy.html Support: https://andyarevalo.com/support.html

Screenshots

FusionCalc Pro | Memo & Calc1 screens
OnStage Timer Pro4 screens

Verdict

The call

The clearest difference is price: OnStage Timer Pro at Free against FusionCalc Pro | Memo & Calc's $4.99. OnStage Timer Pro also leads on update cadence (every 2 weeks vs every 3 months). FusionCalc Pro | Memo & Calc's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). On rating, ratings volume, 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

OnStage Timer Pro is free to download; FusionCalc Pro | Memo & Calc costs $4.99 up front. OnStage Timer Pro sells 1 in-app purchase, starting at $14.99 per year. FusionCalc Pro | Memo & Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for FusionCalc Pro | Memo & Calc against 5.0 for OnStage Timer Pro. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

FusionCalc Pro | Memo & Calc ships an update every 3 months, OnStage Timer Pro every 2 weeks. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
FusionCalc Pro | Memo & Calc versus OnStage Timer Pro: the parameters behind the verdict, then further details
ParameterFusionCalc Pro | Memo & CalcOnStage Timer Pro
Price$4.99Free — better
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews61.3% of reviews—
Number of ratings2 — better1
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS12.0 — better17.0
Further details — not scored
Size14 MB10 MB
Age rating4+4+
DeveloperLeo Rivas-MicoudAndy Arevalo

Customer experience

FusionCalc Pro | Memo & Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews62 reviews
Positive61.3%
Neutral12.9%
Negative25.8%

OnStage Timer Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

FusionCalc Pro | Memo & Calc

No in-app purchases

1 purchases

OnStage Timer Pro

Subscriptions1
  • OnStage Timer Pro3 Days trial$14.991 Year

Questions

Is FusionCalc Pro | Memo & Calc free?
FusionCalc Pro | Memo & Calc costs $4.99, with no in-app purchases.
Is OnStage Timer Pro free?
OnStage Timer Pro is free to download, with in-app purchases available.
Which has better reviews, FusionCalc Pro | Memo & Calc or OnStage Timer Pro?
FusionCalc Pro | Memo & Calc and OnStage Timer Pro are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do FusionCalc Pro | Memo & Calc or OnStage Timer Pro have ads?
Neither FusionCalc Pro | Memo & Calc nor OnStage Timer Pro shows ads.
Which is updated more often, FusionCalc Pro | Memo & Calc or OnStage Timer Pro?
FusionCalc Pro | Memo & Calc ships an update every 3 months, and OnStage Timer Pro every 2 weeks. Most recently, FusionCalc Pro | Memo & Calc was updated on October 18, 2026 and OnStage Timer Pro on October 8, 2026.

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