Comparison

SMART vs Concrete Slab Calculator

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

Head to head
About

SMART

Organize your life by scanning documents, bills, and receipts. Automatically name files, set reminders for deadlines, and search text within your papers. Keep everything private and secure on your own devices.

Highlights
  • Automatic document scanning and edge detection
  • Smart naming suggestions based on content
  • Deadline detection and calendar reminders
  • Full-text search within scanned documents
  • PDF editing, signing, and annotation
  • Cross-device sync for iPhone, iPad, and Mac
  • Password-protected folders with Face ID/Touch ID
Features
Read full description

Paper in. Order out. SMART-PDF scans your paperwork, gives it fitting names and reminds you of deadlines. Everything stays on your own devices: no cloud, no account. NEW IN 4.7: THE YEAR-END CHECK - All deadlines until the end of January and always one clear next step - Find tax papers: SMART-PDF searches the text of your documents for wage statements, donation receipts and more, and you can add your own items - Collect everything in a tax folder with one tap, move or copy, and send it to your tax adviser NEW IN 4.6 - Folders within folders: subfolders up to four levels deep, a protected folder protects everything inside - Split documents: scanned several invoices in one go? SMART-PDF spots where each new document starts and leaves out blank back pages - Name many documents at once, optionally with the date first - New folder from your selection, with a fitting name from the content - Move, rotate and resize drawings afterwards SCAN AND NAME - Scan documents with the camera, edges are detected automatically - Name suggestions from the content, like “Energy Bill July 2026” instead of “Document 17”. With Apple Intelligence right on your device - Quick Scan from a widget, Control Center, the Action button or Siri - Bring in photos and PDFs from other apps, also via the share menu ORDER THAT THINKS AHEAD - Create and sort folders freely, as a list or a grid - Search the text of every document, also from iPhone search - Deadlines such as notice periods and payment dates are detected in the document, with a reminder and optionally in your calendar - Short summary of a document or a whole folder EDIT AND SIGN - Sign PDFs, add text and stamps - Annotate with pen, highlighter and eraser - Reorder, rotate and delete pages, or copy them into other documents - Copy text from scans with Live Text - Shrink large files IPHONE, IPAD AND MAC - Dedicated apps for iPhone, iPad and Mac - “My Devices”: pair once, then your documents sync directly over the air, encrypted and without internet SAFE AND PRIVATE - Password folders with Face ID or Touch ID - App lock at launch - Share with a PDF password if you like - Back up your whole library as a ZIP PREMIUM AND COINS Premium is ad-free and unlocks every feature without coins. The subscription works on iPhone, iPad and Mac with the same Apple Account and can be tried free for 7 days. Durations: 1, 3, 6 or 12 months. Without a subscription you pay for single features with coins. Coins can be bought or earned by watching ads. - Sign a PDF: 1 coin - Share or export a PDF: 1 coin per file - 3 more documents in a full folder: 1 coin - Scan with more than 10 pages: 1 coin - Shrink a document: 1 coin - Summary of a document: 1 coin, the first one is free - Folder overview: 2 coins - Combine documents into a collection: 2 coins Free: creating folders, setting deadlines, splitting and naming. SUBSCRIPTION DETAILS - Payment is charged to your Apple Account at confirmation of purchase. - The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Renewal is charged within 24 hours before the end of the period. - You can manage and cancel subscriptions at any time in your Apple Account settings. - Collected coins are kept when you switch to Premium. Terms of use: https://deine-dokumente.de/agb-nutzungsbedingungen Privacy: https://deine-dokumente.de/datenschutz

About

Concrete Slab Calculator

This tool quickly calculates the area, volume, and weight of concrete slabs in real-time. It supports conversions between imperial and metric units for all key measurements, allowing for custom density input.

Highlights
  • Real-time calculations
  • Imperial and metric unit conversion
  • Custom density input
  • Instantaneous area, volume, and weight results
  • Supports multiple unit types for width, length, depth, weight, density, area, and volume
Features
Read full description

Concrete Slab Calculator is the fastest real-time calculator a concrete slab that quickly convert between the imperial and the metric system’s units for Width, Length, Depth, Density, Area, Volume and Weight in real time and without any hassle. Just provide a Width, Length, Depth and you’ll get an Area, Volume and Weight instantaneously. Also you can provide a custom Density of Concrete. Concrete Slab Calculator can quickly determine Weight based on Width, Length and Depth. Width and Length can quickly convert expressed in: 1. Meters 2. Centimeters 3. Yards 4. Feet 5. Inches Depth can also quickly convert expressed in: 1. Centimeters 2. Millimeters 3. Meters 4. Feet 5. Inches Weight can also quickly convert expressed in: 1. Kilograms 2. Metric Tons 3. US Short Tons 4. Pounds 5. Stones Density can also quickly convert expressed in: 1. Kg per cubic meter 2. Ton per cubic meter 3. US Ton per cubic yard 4. Pound per cubic feet 5. Pound per cubic yard Area can also quickly convert expressed in: 1. Square Meters 2. Square Centimeters 3. Square Yards 4. Square Feet 5. Square Inches Volume can also quickly convert expressed in: 1. Cubic Meters 2. Cubic Centimeters 3. Cubic Yards 4. Cubic Feet 5. Cubic Inches You can use it if you builder, mapmaker, designer, farmer or another cool man. Calculate and convert concrete slab quickly and as you want. --- The Terms of Use https://feelmanapp.com/terms-conditions-for-concrete-slab-calculator/

Screenshots

SMART4 screens
Concrete Slab Calculator4 screens

Verdict

The call

The clearest difference is ads: Concrete Slab Calculator at none against SMART's shown. Concrete Slab Calculator also leads on rating (5.0 vs 4.7) and iOS requirement (13.0 vs 17.0). SMART's advantage is update cadence (fortnightly vs every 32 months) and monetization model (free with in-app purchases vs paid). On price, ratings volume, 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. SMART sells 10 in-app purchases, starting at $2.99 per month and Concrete Slab Calculator sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Concrete Slab Calculator holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 9 and 4 respectively.

UpkeepUpdate frequency

SMART ships an update fortnightly, Concrete Slab Calculator every 32 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
SMART versus Concrete Slab Calculator: the parameters behind the verdict, then further details
ParameterSMARTConcrete Slab Calculator
PriceFreeFree
Rating4.7 (9 ratings)5.0 (4 ratings) — better
Positive reviews95.7% of reviews—
Number of ratings9 — better4
Update frequencyFortnightly — betterEvery 32 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size15 MB2 MB
Age rating4+4+
DeveloperBartnitzky, Böttcher und Springer GbRAnna Filobok

Customer experience

SMART

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews23 reviews
Positive95.7%
Neutral0.0%
Negative4.3%

Concrete Slab Calculator

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

SMART

Subscriptions4
  • SMART-PDF Premium – 1 month7 Days trial$2.991 Month
  • SMART-PDF Premium – 3 months7 Days trial$6.993 Months
  • SMART-PDF Premium – 6 months7 Days trial$11.996 Months
Show 1 more
  • SMART-PDF Premium – 12 months7 Days trial$22.991 Year
One-time6
  • 10 SMART-PDF Coins$0.99
  • 100 SMART-PDF Coins$5.99
  • 150 SMART-PDF Coins$8.99
Show 3 more
  • 250 SMART-PDF Coins$13.99
  • 500 SMART-PDF Coins$17.99
  • 750 SMART-PDF Coins$22.99
3 purchases

Concrete Slab Calculator

Subscriptions3
  • Premium Access$0.997 Days
  • Premium Access$1.991 Month
  • Premium Access$5.991 Year

Questions

Is SMART free?
SMART is free to download, with in-app purchases available.
Is Concrete Slab Calculator free?
Concrete Slab Calculator is free to download, with in-app purchases available.
Which has better reviews, SMART or Concrete Slab Calculator?
Concrete Slab Calculator is rated higher. SMART averages 4.7 out of 5 from 9 ratings, while Concrete Slab Calculator averages 5.0 from 4 ratings.
Do SMART or Concrete Slab Calculator have ads?
SMART shows ads; Concrete Slab Calculator does not.
Which is updated more often, SMART or Concrete Slab Calculator?
SMART ships an update fortnightly, and Concrete Slab Calculator every 32 months. Most recently, SMART was updated on October 29, 2026 and Concrete Slab Calculator on October 24, 2026.

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