Comparison

Screen Ruler vs Maindrop

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

Head to head
About

Screen Ruler

Turn your iPhone or iPad into a precise measuring tool. Easily measure lengths in centimeters or inches with features like magnifier mode and haptic feedback. Ideal for daily tasks, office use, DIY projects, and on-the-go measurements.

Highlights
  • Dual units (cm/inches)
  • Precision calibration
  • Magnifier mode
  • Haptic feedback
  • Clean interface
  • Save and label measurements
Features
Read full description

Turn your iPhone or iPad into a calibratable digital ruler for measuring small objects directly on the screen. Screen Ruler supports centimeters and inches, magnifier-assisted alignment, and haptic feedback. Measure Small Objects on Your Screen Use Screen Ruler for stationery, frames, craft materials, and other small objects that fit along your device screen. Place the object directly on the screen, move the measurement marks to its edges, and read the length. Core Features • Calibratable ruler: Match the scale to an object of known length and save calibration for your device. • CM and inch scales: Switch between centimeters and inches for everyday measurements. • Magnifier assist: Align measurement marks with object edges more confidently. • Haptic feedback: Feel subtle feedback while adjusting the marks. How to Get More Reliable Results For best results, place the object directly on the screen and check the scale against a known length. Calibrate the ruler if you notice an offset. Accuracy and Limitations Screen Ruler is designed for short, everyday measurements. Accuracy depends on device calibration, screen placement, and how precisely the marks are aligned. It does not use the camera or AR and is not intended for measuring rooms or large objects. Feedback: ankek1er@gmail.com

About

Maindrop

Features
Read full description

The Maindrop app allows MAINDROP devices (the MI and the MCUs) to connect to a WiFi network, enabling local communication between them and the faucet products. Additionally, the app allows you to control the activation of the MI’s pump.

Screenshots

Screen Ruler1 screens
Maindrop3 screens

Verdict

The call

The clearest difference is in-app purchases: Maindrop at none against Screen Ruler's 2. Maindrop also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence 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. Screen Ruler sells 2 one-off in-app purchases. Maindrop asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Screen Ruler versus Maindrop: the parameters behind the verdict, then further details
ParameterScreen RulerMaindrop
PriceFreeFree
Rating3.7 (26 ratings) — better—
Positive reviews54.8% of reviews—
Number of ratings26 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size18 MB6 MB
Age rating+44+
Developer向阳 杨Atlas Engion SL

In-app purchases

2 purchases

Screen Ruler

One-time2
  • Ads-free experience$1.99
  • Support for a cup of coffee$2.99
None

Maindrop

No in-app purchases

Questions

Is Screen Ruler free?
Screen Ruler is free to download, with in-app purchases available.
Is Maindrop free?
Maindrop is free to download, with no in-app purchases.
Do Screen Ruler or Maindrop have ads?
Screen Ruler shows ads; Maindrop does not.
Which is updated more often, Screen Ruler or Maindrop?
Screen Ruler ships an update every 3 months, and Maindrop every 3 months. Most recently, Screen Ruler was updated on October 26, 2026 and Maindrop on October 28, 2026.

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