Comparison

Smart Building vs SAS Flex

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

Head to head
About

Smart Building

Features
Read full description

Empower your residential community! Connect with your neighbours, report maintenance, gardening and security issues to your Body Corporate, and be in-touch with important ICE contacts immediately, all with the Smart Building app! Get your residential community and your building smart, get Smart Building!

About

SAS Flex

Manage your answering service from your phone. Listen to calls, read transcripts, text callers, and update schedules in real time. Improve customer relationships and ensure no calls are missed.

Highlights
  • Listen to call recordings
  • Read call transcriptions
  • Text callers directly
  • Manage on-call schedules
  • Review call activity
  • Block unwanted callers
  • Post operator alerts
Features
Read full description

SAS Flex gives you full control of your answering service right from your phone. Stay connected to your callers, review call activity, and manage your on-call team from anywhere. With SAS Flex, you can listen to calls, read transcripts, send and receive text messages, adjust schedules, and keep your operators informed in real time β€” all from one easy-to-use app. Build stronger customer relationships, improve quality assurance, and make sure your business never misses a call. With the SAS Flex app, you’ll be able to: β€’ Review every call in detail β€” listen to recordings, read transcriptions, rate call quality, and add notes for your team. β€’ Text your callers directly and receive SMS replies right inside the app. β€’ Tag and organize calls to keep your account clean and searchable. β€’ Rate and review calls to help improve quality assurance and operator performance. β€’ Block unwanted callers and manage IVR call activity. β€’ Adjust your on-call staff schedule on the go, so the right person always gets the right call. β€’ Add and edit FAQs to keep our operators updated with the latest business information. β€’ Post operator alerts for urgent updates, special instructions, or quick internal messages. β€’ View real-time reports, including minutes used, plan details, and balance information. β€’ Place your account on β€œHold My Calls” when you want to temporarily stop warm transfers. About Specialty Answering Service: Specialty Answering Service provides live and AI-assisted answering solutions for small and midsize businesses. Our professional receptionists answer calls, dispatch messages, and support your team 24/7 β€” helping you build trust with every customer interaction. Over 5,000 businesses rely on SAS to manage their communications and keep operations running smoothly. Try Specialty Answering Service free today and experience how effortless great customer communication can be.

Screenshots

Smart Building4 screens
SAS Flex4 screens

Verdict

The call

Smart Building and SAS Flex are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart Building ships an update monthly, SAS Flex fortnightly. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

ScorecardNo meaningful differences
Smart Building versus SAS Flex: the parameters behind the verdict, then further details
ParameterSmart BuildingSAS Flex
PriceFreeFree
Positive reviewsβ€”25.0% of reviews
Update frequencyMonthlyFortnightly β€” better
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Free
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS15.615 β€” better
Further details β€” not scored
Size31 MB55 MB
Age rating4+4+
DeveloperiShack Digital ConsultancySpecialty Answering Service

In-app purchases

None

Smart Building

No in-app purchases

None

SAS Flex

No in-app purchases

Questions

Is Smart Building free?
Smart Building is free to download, with no in-app purchases.
Is SAS Flex free?
SAS Flex is free to download, with no in-app purchases.
Do Smart Building or SAS Flex have ads?
Neither Smart Building nor SAS Flex shows ads.
Which is updated more often, Smart Building or SAS Flex?
Smart Building ships an update monthly, and SAS Flex fortnightly. Most recently, Smart Building was updated on October 14, 2026 and SAS Flex on October 15, 2026.

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