Comparison

Vertical Check Camera vs INREII

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

Head to head
About

Vertical Check Camera

This app helps you determine if objects are perfectly vertical or horizontal using your device's camera. It overlays a virtual grid that can be rotated and adjusted, allowing you to check alignment from a distance without touching the object.

Highlights
  • Virtual vertical grid overlay
  • Adjustable grid rotation
  • Check alignment from a distance
  • Change grid size with pinch
  • Capture still images
  • Adjust focal length (add-on)
Features
Read full description

“Is something tilted?” This App will answer such a question easily and quickly. However there are some level gage Apps, these Apps need to touch the things which you want to check and these Apps can not check the things far from the device. This App shows a virtual vertical grid wall in front of the iPhone camera, then this vertical wall is very helpful to check whether the something is vertical. There are no needs to touch the device to the thing, and this App can check the things far from the device. This virtual wall can be rotated easily and freely, therefore if you know something is horizontal, this App can also check whether another thing is horizontal to adjusting the this virtual wall to the horizontal thing. Measuring each angles of this virtual wall is also available (an add-on is required to show each degrees). For example, - When you put up a poster, this App can check easily whether the poster is put up straight. - When you learn a perspective drawing method, this App may be some helpful reference (except for one-point perspective lines). - When you play some sport which needs a sense of balance, such as golf, this App may be useful to check whether something is vertical or horizontal. # Other features - Size of grid can be changed with pinching. - Even while movie stops, the virtual wall of grid is capable to modify. And, while movie stops, the still image is capable to capture to the camera roll. - Adjusting the focal length is capable, therefore, this App can be adjusted for external lens (an add-on is required to use the calibrations). - You can organize this App with URL scheme (jp.37.VerticalChecker://) in other Apps such as lunchers. # Notice - The App without add-on can not restart without advertising. If you want to remove advertisings, please purchase the Remove Adds add-on. - Default values of the focal length are taken by measuring with the device owned by the developer and estimating with the values which are opened. Therefore, there may be some errors in these default values. If you want to adjust the focal length, please purchase the Calibrations add-on. - this App is not considered about lens distortions. Therefore, the precision and accuracy are not good probably in the area deviated from the center, especially for using a wide-angle lens. # Disclaimer - Please check carefully End User License Agreement (EULA) before using the App. - Additionally, you may not use this App unless you agree to terms included below. - You agree to assume full and sole responsibility for any use of this App. We are not responsible for any damages or injury, including but not limited to special or consequential damages, that result from your use of (or inability to use) this App, including any damages or injury caused by any failure of performance, error, omission, interruption, defect, delay in operation, computer virus, or other computer malfunction. # Thanks - In a part of the showing of this App in the App Store, the developer use a material supplied at http://sozai-free.com

About

INREII

This app enables real-time infrared video preview, photo and video capture, and file management. It allows for FTP access, WiFi parameter configuration, and firmware updates. The app also provides product recommendations and supports automatic language switching.

Highlights
  • Real-time infrared video preview
  • Capture photos and videos
  • Local file preview and management
  • FTP file access
  • WiFi parameter settings
  • Device firmware updates
  • Automatic language switching
Features
Read full description

(1) Infrared video of real-time preview display device; (2) Take photos, videos, local previews, file management and sharing of video streams; (3) Access the FTP file of the management device; (4) Set WiFi parameters; (5) Get device upgradeable firmware via network, and upgrade the device WiFi firmware through App; (6) Get more product recommendations, categories, and dynamics on the Internet; (7) Automatically switch between Chinese and English versions according to the phone language. (8) Can feedback user's usage information (9) Obtain the user's infrared device information and perform background statistics

Screenshots

Vertical Check Camera4 screens
INREII3 screens

Verdict

The call

The clearest difference is rating: Vertical Check Camera at 4.5 against INREII's 2.0. Vertical Check Camera also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (8.0 vs 13.0). INREII's advantage is in-app purchases (none vs 3) and ratings volume (36 vs 11). 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. Vertical Check Camera sells 3 one-off in-app purchases. INREII asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Vertical Check Camera holds the better App Store score, 4.5 against 2.0. Both are backed by a comparable volume of ratings — 11 and 36 respectively.

UpkeepUpdate frequency

Vertical Check Camera ships an update every 3 weeks, INREII every 2 months. The most recent releases landed on July 25, 2026 and August 12, 2026 respectively.

Scorecard6 real differences · 4 level
Vertical Check Camera versus INREII: the parameters behind the verdict, then further details
ParameterVertical Check CameraINREII
PriceFreeFree
Rating4.5 (11 ratings) — better2.0 (36 ratings)
Positive reviews—23.4% of reviews
Number of ratings1136 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size20 MB64 MB
Age rating4+9+
DeveloperHiroyuki KATOHInfiRay Technologies Co.,Ltd.

Customer experience

Vertical Check Camera

All ratings11 ratings
Positive81.8%
Neutral18.2%
Negative0.0%

INREII

All ratings36 ratings
Positive16.7%
Neutral11.1%
Negative72.2%
Written reviews47 reviews
Positive23.4%
Neutral10.6%
Negative66.0%

In-app purchases

3 purchases

Vertical Check Camera

One-time3
  • Remove Ads$1.99
  • Display Angular Degrees$1.99
  • Adjust Calibrations$1.99
None

INREII

No in-app purchases

Questions

Is Vertical Check Camera free?
Vertical Check Camera is free to download, with in-app purchases available.
Is INREII free?
INREII is free to download, with no in-app purchases.
Which has better reviews, Vertical Check Camera or INREII?
Vertical Check Camera is rated higher. Vertical Check Camera averages 4.5 out of 5 from 11 ratings, while INREII averages 2.0 from 36 ratings.
Do Vertical Check Camera or INREII have ads?
Neither Vertical Check Camera nor INREII shows ads.
Which is updated more often, Vertical Check Camera or INREII?
Vertical Check Camera ships an update every 3 weeks, and INREII every 2 months. Most recently, Vertical Check Camera was updated on July 25, 2026 and INREII on August 12, 2026.

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