Comparison

Smart Solar vs Useful QR Code Reader

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

Head to head
About

Smart Solar

Features
Read full description

太陽発電設備の設置シミュレーションを行う業務用アプリです。 設置する太陽光パネルの枚数や角度、設置する地点を入力して、その地点の日射量データ、太陽光パネル等の性能データをもとに、発電量のシミュレーションを行います。 設置する機器の見積りも作成可能です。

About

Useful QR Code Reader

Features
Read full description

A convenient QR Code Reader app has been released! This app is an easy, simple, and fast QR code reading application. Additionally, it is a handy QR code reader app that records your scan history. After launching the app, grant camera access, hold your device over a QR code, and scan it. The scanned QR code will be displayed at the top of the main screen. Tap it to open the browser and view the URL, or long-press to copy it to the clipboard and use the text as needed. After launching, tap the "Load Image" button and grant access to your photo library. Then, load an image containing a QR code, such as a screenshot, and the app will scan the QR code within the image. (In some cases, it may fail to read due to errors.) It's free, so feel free to use it! A paid version without ads (PRO version) is also available! [How to Use] - Point the camera at a QR code on the initial screen to scan it. - The top right button on the screen transitions to the main screen but skips QR code scanning. - The top left button on the screen scans a QR code from an image in the photo library. - The scanned content is displayed at the top of the main screen. - Tap to open the browser. - Long-press to copy to the clipboard. - QR code scan history is displayed at the bottom of the screen. - Delete all history with "Delete All History." - You can delete history individually. - Tapping on history entries also opens the browser. - Long-pressing history entries copies them to the clipboard. - Tap the "I" in the top right to view information about the app. - Use the back arrow in the top left to return to the initial QR code scanning screen. That's how to use the app. It is a simple, convenient, and fast QR code reading app! Download and try it today!

Screenshots

Useful QR Code Reader2 screens

Verdict

The call

The clearest difference is ads: Smart Solar at none against Useful QR Code Reader's shown. Smart Solar also leads on iOS requirement (12.0 vs 15.6). Useful QR Code Reader's advantage is update cadence (weekly vs every 2 months) and device support (3 vs 1). On price 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart Solar ships an update every 2 months, Useful QR Code Reader weekly. Both last shipped on September 19, 2026.

Scorecard4 real differences · 2 level
Smart Solar versus Useful QR Code Reader: the parameters behind the verdict, then further details
ParameterSmart SolarUseful QR Code Reader
PriceFreeFree
Update frequencyEvery 2 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size108 MB99 MB
Age rating4+4+
DeveloperIntelade Inc.katapu.net

In-app purchases

None

Smart Solar

No in-app purchases

None

Useful QR Code Reader

No in-app purchases

Questions

Is Smart Solar free?
Smart Solar is free to download, with no in-app purchases.
Is Useful QR Code Reader free?
Useful QR Code Reader is free to download, with no in-app purchases.
Do Smart Solar or Useful QR Code Reader have ads?
Useful QR Code Reader shows ads; Smart Solar does not.
Which is updated more often, Smart Solar or Useful QR Code Reader?
Smart Solar ships an update every 2 months, and Useful QR Code Reader weekly. Most recently, Smart Solar was updated on September 19, 2026 and Useful QR Code Reader on September 19, 2026.

Other comparisons