Comparison

Smart Tools! vs PDF Slim

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

Head to head
About

Smart Tools!

Features
Read full description

Smart Tools brings the measurement and construction utilities you reach for on a job site into one clean, easy-to-use app. Whether you are hanging a picture, checking a surface, estimating materials, or reading sensor levels, Smart Tools helps you get accurate results without switching between multiple apps. Built for contractors, tradespeople, DIY homeowners, and anyone who works with their hands, Smart Tools combines leveling, outdoor navigation, measurement, construction math, and sensor tools in a single toolkit you can carry in your pocket. What you can do with Smart Tools • Level surfaces with a responsive bubble level and angle readout • Find direction with a digital compass and declination support • View GPS coordinates, altitude, and speed for outdoor work • Measure with an on-screen ruler in metric and imperial units • Estimate real-world distance and height using AR surface detection • Check angles with a sensor-based and camera protractor • Convert length, area, volume, mass, pressure, and speed units • Calculate paint, tile, flooring, concrete, and pipe quantities • Read sound levels, light intensity, magnetic fields, and vibration • Save favorites and search tools quickly from the home screen • Switch between light, dark, and system appearance • Calibrate sensor tools and reset calibration when needed Designed for real-world use Smart Tools is made for practical tasks: leveling a shelf, checking a wall angle, confirming coordinates on site, estimating how much paint or tile you need, or taking a quick sound or light reading. Tools are organized by category so you can open what you need in seconds. AR measurement tools use your device camera to detect surfaces and estimate distance and height in the environment around you. Sensor tools use your phone’s built-in hardware to display live readings on screen. Construction calculators help you plan material quantities with clear inputs and useful results you can share. Privacy and your data No account is required. Measurements, calculator entries, favorites, and settings are stored locally on your device. Smart Tools requests camera, location, microphone, and motion permissions only when a specific tool needs them. You can manage permissions anytime in iOS Settings. Smart Tools is free to download and supported by ads. We do not require you to create a profile or sign in to use the app. Download Smart Tools today and keep leveling, measuring, calculating, and sensing tools ready whenever you need them.

About

PDF Slim

Reduce the size of your PDF files with adjustable quality settings. Save or share compressed documents directly from the application. Access detailed information about each PDF.

Highlights
  • Compress PDF files
  • Adjustable quality levels
  • Save compressed PDFs
  • Share instantly
  • View PDF details
Features
Read full description

Compress the file size of your PDF documents with ease Choose from different PDF quality levels to control the compression rate Save compressed PDFs or share them instantly from the app View detailed PDF information, including the file name, creation date, and file size

Screenshots

Smart Tools!4 screens
PDF Slim3 screens

Verdict

The call

The clearest difference is ads: Smart Tools! at none against PDF Slim's shown. PDF Slim's advantage is update cadence (daily vs weekly). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart Tools! ships an update weekly, PDF Slim daily. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

Scorecard2 real differences · 7 level
Smart Tools! versus PDF Slim: the parameters behind the verdict, then further details
ParameterSmart Tools!PDF Slim
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeeklyDaily — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size66 MB8 MB
Age rating4+4+
DeveloperVENUSAPPS PRIVATE LIMITEDGwanRyel Lee

In-app purchases

None

Smart Tools!

No in-app purchases

None

PDF Slim

No in-app purchases

Questions

Is Smart Tools! free?
Smart Tools! is free to download, with no in-app purchases.
Is PDF Slim free?
PDF Slim is free to download, with no in-app purchases.
Do Smart Tools! or PDF Slim have ads?
PDF Slim shows ads; Smart Tools! does not.
Which is updated more often, Smart Tools! or PDF Slim?
Smart Tools! ships an update weekly, and PDF Slim daily. Most recently, Smart Tools! was updated on September 14, 2026 and PDF Slim on September 9, 2026.

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