Comparison

BPaaS Image Ruler vs Sigmakey

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

Head to head
About

BPaaS Image Ruler

Features
Read full description

Measure Pixels with Precision BPaaS Image Ruler is a lightweight pixel inspection tool designed for developers, designers, and technical users who need accurate image measurements. Key Features • X/Y pixel rulers with real coordinate readout • Adaptive grid with major and minor divisions • Zoom up to 80× for detailed inspection • Pinch-to-zoom and pan gestures • Toggle rulers and grid overlays • Import images from Photos • Paste images directly from clipboard All processing happens locally on your device. No data is collected or transmitted. BPaaS Image Ruler is ideal for UI inspection, layout validation, design verification, and pixel-perfect measurements.

About

Sigmakey

This utility provides a specialized keyboard for typing mathematical expressions, including fractions, roots, and Greek letters, directly within any app. It supports LaTeX, Unicode, and image output, with on-device processing for privacy and speed.

Highlights
  • Full math keyboard layout
  • Two-dimensional cursor for exponents/numerators
  • Type LaTeX, Unicode, or rendered image
  • On-device typesetting, no network required
  • Symbol search, recent, and favorite symbols
Features
Read full description

Sigmakey is a math keyboard for people who need to type actual math, anywhere you can type at all. Fractions, exponents, roots, Greek letters, and matrices sit one tap away, and the cursor moves right into a numerator or an exponent, so scientific notation looks the way it should. - A full math keyboard layout that works in any app with a text field - A two-dimensional field with a cursor that steps into fractions and powers - Type LaTeX, plain Unicode, or a rendered image, whichever the app expects - Everything typeset on device, with no network - Search for a symbol, or grab a recent or a favorite Drop an equation into a note, a message, or a homework app without hunting through menus. Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vTDX9pxPOlUJl_skVUHPi99mAw0y2B2BYd_v1mJkoF3xW3rlOcW5KlYd4t93MMbbGhctSTnBTy7d_l6/pub Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BPaaS Image Ruler3 screens
Sigmakey4 screens

Verdict

The call

The clearest difference is in-app purchases: BPaaS Image Ruler at none against Sigmakey's 1. BPaaS Image Ruler also leads on iOS requirement (17.2 vs 26.0). 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. Sigmakey sells 1 one-off in-app purchase. BPaaS Image Ruler asks for nothing beyond the download.

Scorecard2 real differences · 6 level
BPaaS Image Ruler versus Sigmakey: the parameters behind the verdict, then further details
ParameterBPaaS Image RulerSigmakey
PriceFreeFree
Rating—2.0 (1 ratings) — better
Number of ratings—1 — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.2 — better26.0
Further details — not scored
Size13 MB13 MB
Age rating4+4+
DeveloperJose A PerezAndrii Bashta

In-app purchases

None

BPaaS Image Ruler

No in-app purchases

1 purchases

Sigmakey

One-time1
  • Sigmakey Pro$9.99

Questions

Is BPaaS Image Ruler free?
BPaaS Image Ruler is free to download, with no in-app purchases.
Is Sigmakey free?
Sigmakey is free to download, with in-app purchases available.
Do BPaaS Image Ruler or Sigmakey have ads?
Neither BPaaS Image Ruler nor Sigmakey shows ads.

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