Comparison

Image Alignment vs Ruler

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

Head to head

Measure anything

About

Image Alignment

Features

Read full description

Align the content of two images.

About

Ruler

Features

Read full description

Turn your smartphone screen into a precise ruler. Measure real lengths with a simple touch and drag. 【Key Features】 - Touch & drag to measure lengths instantly - Switch between cm and inch units - Real-time measurement display - Automatic PPI detection for accurate results 【Precision Calibration】 - Credit card (85.6mm) calibration for pinpoint accuracy - Saved calibration — set it once, measure anytime - Optimized accuracy per device 【Easy-to-Use Design】 - Clean ruler interface with clear markings - Dark mode support - 10 languages supported - Intuitive unit toggle 【Perfect For】 - Quick measurements when you don't have a ruler - DIY, crafts, and sewing projects - Furniture placement and space planning - Students and professionals on the go No need to carry a ruler — measure anything, anywhere with your phone!

Screenshots

Image Alignment1 screens

Ruler3 screens

Verdict

The call

The clearest difference is ads: Ruler at none against Image Alignment's shown. Ruler also leads on iOS requirement (13.0 vs 17.7.2). Image Alignment's advantage is update cadence (fortnightly vs every 2 months). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Image Alignment ships an update fortnightly, Ruler every 2 months. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 3 level

Image Alignment versus Ruler: the parameters behind the verdict, then further details
Parameter	Image Alignment	Ruler
Price	Free	Free
Update frequency	Fortnightly — better	Every 2 months
Ads	Yes	No — better
In-app purchases	No	No
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	17.7.2	13.0 — better
Further details — not scored
Size	84 MB	23 MB
Age rating	4+	4+
Developer	Hideaki Uchikoshi	mintaek lee

In-app purchases

None

Image Alignment

No in-app purchases

None

Ruler

No in-app purchases

Questions

Is Image Alignment free?

Image Alignment is free to download, with no in-app purchases.

Is Ruler free?

Ruler is free to download, with no in-app purchases.

Do Image Alignment or Ruler have ads?

Image Alignment shows ads; Ruler does not.

Which is updated more often, Image Alignment or Ruler?

Image Alignment ships an update fortnightly, and Ruler every 2 months. Most recently, Image Alignment was updated on September 30, 2026 and Ruler on October 1, 2026.