Comparison

Image Ruler vs EG Sunbox

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

Head to head
About

Image Ruler

This app allows you to measure objects directly on photos. Simply take a picture, mark a known object for reference, and then draw measurements on other items within the same image. It supports both metric and imperial units and offers intuitive editing tools.

Highlights
  • Measure objects on photos
  • Use a known object as a reference
  • Supports metric and imperial units
  • Intuitive editing interface
  • Organize photos easily
  • Zoom for precision
Features
Read full description

Measure anything in any photo. Take a photo or import one from your library, place a reference object you already know the size of, and instantly calculate real-world measurements — lengths, angles, and areas — directly on the image. How it works Set a reference line on a known object in your photo. From there, every measurement you draw is automatically calculated in real scale. What you can measure Ruler — measure distances and lengths Arrow — annotate with directional measurements Angle — measure the angle between any two lines Area — tap points to outline a surface and calculate its area Built for precision Works entirely offline — no internet required Metric and imperial units Pinch to zoom for precise point placement Undo and redo any change Hide or show your reference line at any time Tips for accurate results For best accuracy, make sure your reference object and the object you're measuring are in the same plane, and that the camera was parallel to both when the photo was taken. Perspective distortion affects results. Measurements are estimates based on the reference you provide.

About

EG Sunbox

Features
Read full description

The ultimate lighting control tool for growers. Our app allows you to customize your own Recipes of Light while gaining access to a digital global sharing platform where users are able to share tips, tricks and light recipes to other growers around the world.

Screenshots

Image Ruler4 screens
EG Sunbox4 screens

Verdict

The call

The clearest difference is in-app purchases: EG Sunbox at none against Image Ruler's 7. EG Sunbox also leads on ads (none vs shown). Image Ruler's advantage is update cadence (every 3 weeks vs every 7 months). 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. Image Ruler sells 5 one-off in-app purchases. EG Sunbox asks for nothing beyond the download.

UpkeepUpdate frequency

Image Ruler ships an update every 3 weeks, EG Sunbox every 7 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 7 level
Image Ruler versus EG Sunbox: the parameters behind the verdict, then further details
ParameterImage RulerEG Sunbox
PriceFreeFree
Rating1.6 (45 ratings) — better—
Positive reviews17.6% of reviews—
Number of ratings45 — better—
Update frequencyEvery 3 weeks — betterEvery 7 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 — better15.6
Further details — not scored
Size47 MB55 MB
Age rating4+17+
DeveloperMartin SchurmannEmersongrow Technology Inc

In-app purchases

5 purchases

Image Ruler

One-time5
  • imageRulerPro$0.99
  • Small Tip2 variants$0.99
  • Medium Tip2 variants$2.99
Show 2 more
  • Big Tip$4.99
  • Big tip$4.99
None

EG Sunbox

No in-app purchases

Questions

Is Image Ruler free?
Image Ruler is free to download, with in-app purchases available.
Is EG Sunbox free?
EG Sunbox is free to download, with no in-app purchases.
Do Image Ruler or EG Sunbox have ads?
Image Ruler shows ads; EG Sunbox does not.
Which is updated more often, Image Ruler or EG Sunbox?
Image Ruler ships an update every 3 weeks, and EG Sunbox every 7 months. Most recently, Image Ruler was updated on October 24, 2026 and EG Sunbox on October 9, 2026.

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