Comparison

Calca app vs CoPi

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

Head to head
About

Calca app

This tool allows you to transfer images from your device or camera onto paper or walls, acting as a digital projector. It offers customization with over 1550 fonts and various colors, and includes tutorials for learning its features.

Highlights
  • Image transfer to paper/walls
  • Camera lucida/projector functionality
  • 3D effect drawing
  • Customizable with 1550+ fonts
  • Web page capture
  • Multilingual support
Features
Read full description

CalcaApp: Your Customizable Tool for Transferring Images to Paper Welcome to the latest CalcaApp update! Overview: CalcaApp is an innovative, customizable tool that allows you to transfer any image from your device or captured with your camera to paper, acting as a camera lucida or projector. With a wide selection of features and tools, CalcaApp is designed to inspire you and facilitate your artistic creations. You can draw on a table on a paper yes, but you can also make a small mural on the wall if you hold your phone upright and looking through it at the image you have chosen on the wall. 3D effect: You can use a basic stand to support the device with a 45 degree tilt or those you choose, and you can make a 3D effect on the drawing. examples with videos and images at CalcaApp.com. Free for Everyone: I'm excited to announce that CalcaApp is now completely free for all its users - enjoy all the features at no cost! Earn Points, Remove Ads: Coming soon, you'll have options that will require more than ten points. With an active subscription, you'll have access to everything unlocked at the same special price. Annual Subscription: If you've noticed that CalcaApp is continually developing and implementing new features, you'll now have access to everything unlocked at the same price. Multicultural Languages: We've added new languages, including Italian, plus Russian, French, Indonesian, German, Arabic, English, Spanish and Portuguese, so you can enjoy CalcaApp in your preferred language. Customize with 1550+ Fonts: Choose from a wide selection of over 1550 fonts to give a unique touch to your texts and designs. In addition, CalcaApp is customizable in various colors for easy inspiration when using the app. Improved Web Capture: Now, capturing web pages is easier than ever. Turn your favorite websites into images with just one tap. Learn with Our Tutorials: Explore our tutorials on CalcaApp.Com to get the most out of all the features and tools available. Follow me on the Networks: Ask us for new features from our social networks and get to know them on ApliArte.Com. Recommended supports: Use supports recommended by CalcaApp or, failing that, something suitable, such as a glass, a jar or a box, to hold the device horizontally or vertically depending on where you want to make the drawing, but it is important that the device is fixed. Tips and Recommendations: Consider using a stand recommended by CalcaApp for a better experience. Consider choosing a color of your liking for a better user experience. Consider using relaxing music and make sure you have enough lighting to enjoy the experience. Remember that CalcaApp is not magic and requires practice. You can find demonstration videos on our website for best results. IMPORTANT: -You must give permission to the camera of your device, to be able to see through it, the image chosen or captured in the area where you are about to draw. -This app is not magic (It needs practice, there are demonstration videos to see results). -Your device MUST FOCUS ON THE DRAWING AREA, whether it is paper, wall, floor, etc... FOR ITS CORRECT FUNCTIONING. -You can search with the app from the web for any drawing to color and thus start practicing. -You can remove advertising with a point system and at no cost. -It does not project the image (For this you need a projector). -To avoid autofocus you have to prevent the hand from passing under the camera (It is explained with images in CalcaApp.com). -You do not need to register in the app. -This app is under continuous development, we appreciate and value your comments and suggestions at erbolamm.com or apliarte.com. Is there anything else I can help you with?

About

CoPi

Easily trace pictures onto paper for children to color or digitize drawings from paper onto your device. This intuitive tool is designed for users of all ages, making it simple to create copies or bring physical art into the digital realm.

Highlights
  • Trace pictures onto paper
  • Digitize drawings from paper
  • User-friendly for children
  • Free basic functions
Features
Read full description

You just want to copy a picture that your child can color? #1 With this app you can select any picture and trace it onto a sheet of paper to create a copy. #2 Now you can also digitize a picture from a sheet of paper onto the device. It's so easy that even children aged 5 and over can do it. Try it out! The basic functions are completely free and can be used free of charge.

Screenshots

Calca app4 screens
CoPi4 screens

Verdict

The call

The clearest difference is ads: CoPi at none against Calca app's shown. Calca app's advantage is ratings volume (92 vs 3). On price, rating, update cadence and in-app purchases 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. Calca app sells 3 in-app purchases, starting at $4.99 per month and CoPi sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.0 for Calca app against 4.0 for CoPi. That said, the two scores are not equally well evidenced: Calca app has 92 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Calca app ships an update every 3 weeks, CoPi every 2 weeks. The most recent releases landed on November 13, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Calca app versus CoPi: the parameters behind the verdict, then further details
ParameterCalca appCoPi
PriceFreeFree
Rating4.0 (92 ratings)4.0 (3 ratings)
Positive reviews49.1% of reviews—
Number of ratings92 — better3
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.6 — better
Further details — not scored
Size65 MB7 MB
Age rating4+4+
DeveloperFrancisco Mateo MarquezDaniel Kuhl

In-app purchases

3 purchases

Calca app

Subscriptions2
  • Monthly Advanced Founder Plan2 Months trial$4.991 Month
  • Yearly Basic Founder Plan1 Year trial$49.991 Year
One-time1
  • Permanent License$149.99
1 purchases

CoPi

One-time1
  • all features$1.99

Questions

Is Calca app free?
Calca app is free to download, with in-app purchases available.
Is CoPi free?
CoPi is free to download, with in-app purchases available.
Which has better reviews, Calca app or CoPi?
Calca app and CoPi are both rated 4.0 out of 5 on the App Store, from 92 and 3 ratings respectively.
Do Calca app or CoPi have ads?
Calca app shows ads; CoPi does not.
Which is updated more often, Calca app or CoPi?
Calca app ships an update every 3 weeks, and CoPi every 2 weeks. Most recently, Calca app was updated on November 13, 2026 and CoPi on November 4, 2026.

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