Comparison

Ruler vs NSPower

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

Head to head
About

Ruler

Transform your phone into a precise measuring tool for any task. Accurately measure small objects on your screen or larger items using augmented reality. Save your measurements and switch between units effortlessly.

Highlights
  • Dual measurement modes (screen/AR)
  • Supports inches, centimeters, millimeters
  • Fast and accurate results
  • Measurement history saving
  • Intuitive user interface
Features
Read full description

Measure Anything, Anywhere—Instantly! Ditch the tape measure! Turn your phone into a powerful precision tool that fits right in your pocket. Whether you're hanging artwork, shopping for furniture, or tackling DIY projects, get accurate measurements in seconds. Why You'll Love It: 1. Dual Measurement Modes – Use your screen for small objects or AR camera for larger items 2. Universal Units – Seamlessly switch between inches, centimeters, and millimeters 3. Lightning-Fast Results – No setup, no hassle—just point and measure 4. Measurement History – Never lose track! Save and revisit all your measurements instantly 5. Crystal-Clear Design – Beautiful interface that anyone can master in seconds Perfect For: -Home improvement and DIY projects - Furniture shopping and room planning - Crafts, sewing, and creative work - Professional contractors and designers - Everyday quick measurements Get Unlimited Access: - Weekly Plan: $4.99/week with a 3-day FREE trial - Annual Plan: Just $19.99/year (Best Value!) Download now and never be caught without a ruler again! Payment charged to iTunes Account at purchase confirmation. Subscription auto-renews unless cancelled 24 hours before period ends. Manage subscriptions in iTunes Account settings. Privacy Policy: https://docs.google.com/document/d/1rI3fnxwWA-0x2lp5cD4D_XVscsq-xmo4NaXoUM_9qlQ/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/15w3N4DqRNjGFrUpbeaxzNEOhz9Owq0NLnhlG_Ej71Uo/edit?usp=sharing

About

NSPower

Features
Read full description

View the real-time operating status of energy storage equipment. Check status of control modules, such as MPPT, DCDC, inverter, BMS, etc. Check the status of the battery, protection information, historical records, etc.

Screenshots

Ruler4 screens
NSPower3 screens

Verdict

The call

The clearest difference is in-app purchases: NSPower at none against Ruler's 2. NSPower also leads on iOS requirement (13.0 vs 16.0). Ruler's advantage is update cadence (every 6 days vs every 3 weeks). 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. Ruler sells 2 in-app purchases, starting at $4.99 per 7 days. NSPower asks for nothing beyond the download.

UpkeepUpdate frequency

Ruler ships an update every 6 days, NSPower every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Ruler versus NSPower: the parameters behind the verdict, then further details
ParameterRulerNSPower
PriceFreeFree
Rating4.4 (42 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings42 — better—
Update frequencyEvery 6 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size108 MB28 MB
Age rating4+4+
DeveloperURVO PIIRISILDJiangsu Sooner Co., Ltd.

In-app purchases

2 purchases

Ruler

Subscriptions2
  • Ruler – Measure Tool3 Days trial$4.997 Days
  • Ruler – Measure Tool$19.991 Year
None

NSPower

No in-app purchases

Questions

Is Ruler free?
Ruler is free to download, with in-app purchases available.
Is NSPower free?
NSPower is free to download, with no in-app purchases.
Do Ruler or NSPower have ads?
Neither Ruler nor NSPower shows ads.
Which is updated more often, Ruler or NSPower?
Ruler ships an update every 6 days, and NSPower every 3 weeks. Most recently, Ruler was updated on November 5, 2026 and NSPower on October 31, 2026.

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