Comparison

Calculus doodlus vs Tapadito

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

Head to head
About

Calculus doodlus

This app offers a multi-page calculator with automatic saving and advanced functions like percentage and VAT calculation. It uniquely presents calculations in an interactive, handwritten style that can be customized with your own script.

Highlights
  • Multi-page interface
  • Automatic work saving
  • Percentage calculation
  • VAT calculation
  • Customizable handwriting style
  • Interactive calculation pages
Features
Read full description

Calculus doodlus keeps your calculations visible, line by line. Read them back, continue where you left off, or go back and change any number. • Edit, copy & link Touch and hold any number to edit it. Tap a line to reuse its value, or double-tap to link it to another calculation and keep the values in sync. • Percentages & VAT Calculate percentages or deduct VAT with ease. The calculation remains visible, so you can see exactly how the result was obtained. • Keep your calculations Your pages are saved automatically. Keep recent calculations, pin important ones, rename and share them, and switch between pages with a swipe. • Big numbers, exact results Every operation is performed digit by digit, the same way you learned in school. That's how Calculus doodlus handles very large numbers while keeping exact results on the page. • Make it your own Customize the keyboard color and replace its digits with your own handwriting. Add Calculus doodlus to your Lock Screen or Control Center for one-tap access. 4.8 stars from more than 10,000 ratings Every 2 seconds, someone somewhere in the world starts a new calculation page. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Tapadito

Protect your personal phone number by using a temporary, disposable number for communication. Ideal for real estate agents or online dating, it allows you to stay in touch without revealing your private contact details.

Highlights
  • Disposable phone numbers
  • Private communication
  • Number masking
  • Temporary contact
  • Secure messaging
Read full description

Today our personal phone number is a very delicate thing to simply give to anyone. For this reason, people who work in real estate or a girl who has just met a boy on the Internet, are a little afraid to give their personal phone number to someone they have just met. Now with Tapadito, that fear has passed into the past! Now, with Tapadito you can keep in touch with someone without having to give them your personal phone number.

Screenshots

Calculus doodlus4 screens
Tapadito4 screens

Verdict

The call

The clearest difference is rating: Calculus doodlus at 4.8 against Tapadito's 3.4. Calculus doodlus also leads on ratings volume (584 vs 5). Tapadito's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 6 weeks). On price, 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. Calculus doodlus sells 1 in-app purchase, starting at $4.99 per year. Tapadito asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculus doodlus holds the better App Store score, 4.8 against 3.4. That said, the two scores are not equally well evidenced: Calculus doodlus has 584 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 82% of Calculus doodlus's written reviews are positive against 100% of Tapadito's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Calculus doodlus ships an update every 6 weeks, Tapadito every 2 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard7 real differences · 3 level
Calculus doodlus versus Tapadito: the parameters behind the verdict, then further details
ParameterCalculus doodlusTapadito
PriceFreeFree
Rating4.8 (584 ratings) — better3.4 (5 ratings)
Positive reviews81.9% of reviews100.0% of reviews — better
Number of ratings584 — better5
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size13 MB24 MB
Age rating4+4+
DeveloperStéphan BarbéRemwes, LLC

Customer experience

Calculus doodlus

All ratings580 ratings
Positive94.1%
Neutral2.2%
Negative3.6%
Written reviews503 reviews
Positive81.9%
Neutral6.2%
Negative11.9%

Tapadito

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Calculus doodlus

Reported bugs

3 issues
  • Calculation results not displaying correctly
  • App crashing on launch for some users
  • Handwritten numbers not registering properly

Requested features

5 requests
  • Add ability to edit/delete individual calculations
  • Implement a dark mode option
  • Include more advanced math functions
  • Allow copying/pasting of individual numbers
  • Improve multitasking support

Tapadito

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Calculus doodlus

Subscriptions1
  • Remove Ads$4.991 Year
None

Tapadito

No in-app purchases

Questions

Is Calculus doodlus free?
Calculus doodlus is free to download, with in-app purchases available.
Is Tapadito free?
Tapadito is free to download, with no in-app purchases.
Which has better reviews, Calculus doodlus or Tapadito?
Calculus doodlus is rated higher. Calculus doodlus averages 4.8 out of 5 from 584 ratings, while Tapadito averages 3.4 from 5 ratings.
Do Calculus doodlus or Tapadito have ads?
Both Calculus doodlus and Tapadito show ads.
Which is updated more often, Calculus doodlus or Tapadito?
Calculus doodlus ships an update every 6 weeks, and Tapadito every 2 weeks. Most recently, Calculus doodlus was updated on November 1, 2026 and Tapadito on November 3, 2026.

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