Comparison

Tracecolor vs QR_App

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

Head to head
About

Tracecolor

Transform your photos into coloring pages with this app. Easily create custom outlines from your own pictures or provided materials, then color them digitally. Simple controls make it accessible for all ages.

Highlights
  • Convert photos to outlines
  • Customizable outline sliders
  • Coloring with pen and color selection
  • Zoom for detailed coloring
  • Import from camera, library, or materials
  • Invert colors and edit original picture
Features
Read full description

Tracecolor is a coloring program. You can take a picture and convert it into its outline traces and then you can color it as you like. It is designed to be simple to use for kids or older adults who enjoy drawing. There are small set of controls for pen size, opacity, and color selection. There is a zoom page to enlarge a section of the picture in order to focus on the detail in that section. Pictures can come from your camera, library, or our materials page. On the photo edit page, you can color over the original picture, invert the colors, or create an outline (there are various sliders for changing your outline). The program is free, except if you want to save your picture to your photo library, then you need to unlock the app on the materials page. Art therapy can be useful for keeping the mind active. Coloring books are typically either simple books for children and quite complex books for adults. But it is harder to find books in middle which have simple images that are interesting for adults. With this program, you can take photos and create your own materials. It might also be more meaningful and fun to have images that come from their own life (e.g., a favorite place or pet).

About

QR_App

Easily read and create QR codes. Save LINE QR codes to display them on your Apple Watch. This app allows for convenient QR code management and sharing.

Highlights
  • Read QR codes
  • Create QR codes
  • Display QR codes on Apple Watch
  • Save QR codes
  • Supports LINE QR codes
Features
Read full description

QRコードの読込み、作成ができます。 読み込んだQRコードは、Apple Watchで表示させることもできます! LINEのQRコードを保存しておけば、Apple Watchでも表示できます。 ※QRコードの商標はデンソーウェーブの登録商標です。

Screenshots

Tracecolor4 screens
QR_App2 screens

Verdict

The call

The clearest difference is review sentiment: QR_App at 75% against Tracecolor's 0%. QR_App also leads on in-app purchases (none vs 14) and update cadence (every 8 months vs every 42 months). Tracecolor's advantage is ads (none vs shown). On price, 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

Both are free to download. Tracecolor sells 14 one-off in-app purchases. QR_App asks for nothing beyond the download.

UpkeepUpdate frequency

Tracecolor ships an update every 42 months, QR_App every 8 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
Tracecolor versus QR_App: the parameters behind the verdict, then further details
ParameterTracecolorQR_App
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews75.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 42 monthsEvery 8 months — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS15.614.5 — better
Further details — not scored
Size5 MB20 MB
Age rating4+4+
DeveloperFranklin ChangHiroki Sato

Customer experience

Tracecolor

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

QR_App

Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

14 purchases

Tracecolor

One-time14
  • Brutalist Building 1$1.99
  • Traditional Japanese House 1$1.99
  • Storefront 1$1.99
Show 11 more
  • Large Sakura$1.99
  • Blocks$1.99
  • Rakugo$1.99
  • Rice Plants$1.99
  • Shirts$1.99
  • Smokestack$1.99
  • Sphere$1.99
  • Sphere2$1.99
  • Sphere3$1.99
  • Tamade$1.99
  • Unlock this app$4.99
None

QR_App

No in-app purchases

Questions

Is Tracecolor free?
Tracecolor is free to download, with in-app purchases available.
Is QR_App free?
QR_App is free to download, with no in-app purchases.
Do Tracecolor or QR_App have ads?
QR_App shows ads; Tracecolor does not.
Which is updated more often, Tracecolor or QR_App?
Tracecolor ships an update every 42 months, and QR_App every 8 months. Most recently, Tracecolor was updated on October 24, 2026 and QR_App on October 27, 2026.

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