Comparison

CalcMate vs Rotary calculator

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

Head to head
About

CalcMate

This app combines note-taking with a powerful calculator, allowing you to perform calculations directly within your text. It handles math, currency, unit conversions, and date calculations, offering a streamlined alternative to spreadsheets and traditional calculators.

Highlights
  • Calculate math within text
  • Currency and unit conversions
  • Date calculations
  • Organize notes with folders
  • iCloud syncing
  • Custom number keyboard
Features
Read full description

Stop switching between Notes and Calculator. Type “1000$ + 20% fee” and CalcMate shows the answer instantly, right next to your words. CalcMate is a notepad with a built-in calculator. Mix numbers, text, percentages, currencies, dates and units in the same note, and every line is calculated live as you type. Use it for budgets, expenses, invoices, splitting bills, shopping lists, quotes and quick estimates — no spreadsheet needed. TRY THESE EXAMPLES • 100 + 5 tip • 1000$ + 20% fee • 900$ + 20$ delivery + 1.5% • 500 USD in EUR • 10 BTC in USD • Today + 5 days • 1 kg in lb • subtotal — total of all previous lines • line5 — reuse the result from line 5 • rent × 12 — use saved variables from your Variables list • 20 #food, then sum(#food) — total everything with a tag • # this is a comment WHAT YOU CAN DO • Calculate directly inside your notes, line by line • Percentages, taxes, discounts and tips • Live currency and crypto conversion • Unit conversion: weight, length, volume, time and more • Date and duration math • Variables and line references to reuse results • Calculation tags: sum, average and count lines by #tag • Running total shown above the keyboard STAY ORGANIZED • Folders for every project, trip or budget • Highlight text in eight colors • Dividers to start a fresh calculation section • Share notes as PDF • Trash to restore deleted notes • iCloud sync across iPhone and iPad MAKE IT YOURS • Custom number keyboard with quick symbols • Number formatting, precision, font and font size • Alternate app icons FREE TO USE CalcMate is free. You can optionally remove ads or leave a tip to support development. WE’D LOVE YOUR FEEDBACK Questions or ideas? Email us at lazyboardapp+calcmate@gmail.com

About

Rotary calculator

Features
Read full description

Calculator that rotates calculation results ~Easy to check calculation results with other people~

Screenshots

CalcMate4 screens
Rotary calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: Rotary calculator at none against CalcMate's 5. 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. CalcMate sells 5 one-off in-app purchases. Rotary calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 9 level
CalcMate versus Rotary calculator: the parameters behind the verdict, then further details
ParameterCalcMateRotary calculator
PriceFreeFree
Rating4.9 (95 ratings) — better—
Positive reviews95.7% of reviews—
Number of ratings95 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.8.3 — better
Further details — not scored
Size23 MB35 MB
Age rating4+4+
DeveloperElsayed HusseinHideaki Uchikoshi

In-app purchases

5 purchases

CalcMate

One-time5
  • Buy me a coffee$0.99
  • Buy me 2 coffees$1.99
  • Buy Me a burger$4.99
Show 2 more
  • Remove Ads$5.99
  • Buy Me a pizza$9.99
None

Rotary calculator

No in-app purchases

Questions

Is CalcMate free?
CalcMate is free to download, with in-app purchases available.
Is Rotary calculator free?
Rotary calculator is free to download, with no in-app purchases.
Do CalcMate or Rotary calculator have ads?
Both CalcMate and Rotary calculator show ads.
Which is updated more often, CalcMate or Rotary calculator?
CalcMate ships an update every 2 weeks, and Rotary calculator every 2 weeks. Most recently, CalcMate was updated on October 30, 2026 and Rotary calculator on October 27, 2026.

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