Comparison

Cornerstone Apartment Services vs SÆR

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

Head to head
About

Cornerstone Apartment Services

Manage your apartment living with ease. Pay rent securely, submit and track maintenance requests, and handle lease renewals all from your mobile device. This platform streamlines community living for residents.

Highlights
  • Secure rent payments
  • Submit maintenance requests
  • Track work orders
  • Sign lease renewals
  • Set up auto-pay
Features
Read full description

Welcome to the Cornerstone Apartment Services Resident Portal App -- an innovative platform that makes paying rent and submitting maintenance requests at your community easier than ever before. With the Cornerstone App, residents can: • Pay Rent: Make secure payments over the RENTCafe portal from any place, at any time -- no desktop needed. Residents can set up multiple payment methods with the option to submit a one-time payment or set up auto-pay. • Submit Maintenance Requests: Expedite work orders at the tips of your fingers and track the entire process. The seamless work order portal allows for timely fixes for non-emergencies, and will notify residents once the maintenance technician has completed the job,or if the issue requires immediate follow-up. • Sign Lease Renewals: Efficiently handle lease renewals in the app. The entire lease renewal process can be done completely within the app. The Cornerstone Apartment Services Resident Portal App was designed specifically for all Cornerstone communities and is serviced by RENTCafe. Please reach out to Cornerstone directly if you have any questions or issues about app features and functionality.

About

SÆR

This AI companion analyzes your written thoughts to identify patterns and subtle changes, offering insights directly on your device. It provides a private space for reflection and support without any cloud processing or tracking.

Highlights
  • On-device AI processing
  • Pattern and shift detection
  • Private writing analysis
  • No accounts or tracking
  • Personalized reflections
Features
Read full description

A private AI companion that listens through your writing and reflects back what matters — spotting patterns and quiet shifts, all on your device. It reads what you share and responds with reflections that notice patterns, sense quiet shifts, and uncover what may be unfolding beneath the surface. Simple, intelligent, and always on your side. Everything runs locally on your device, powered by an on-device LLM. No accounts. No tracking. No cloud processing. Just a private space to feel seen, heard, and supported — one day at a time.

Screenshots

Cornerstone Apartment Services4 screens
SÆR4 screens

Verdict

The call

The clearest difference is rating: SÆR at 5.0 against Cornerstone Apartment Services's 4.3. SÆR also leads on update cadence (every 6 weeks vs every 10 months). Cornerstone Apartment Services's advantage is ratings volume (760 vs 2) and iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and monetization model 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.

ReceptionRating · Positive reviews · Number of ratings

SÆR holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Cornerstone Apartment Services has 760 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Cornerstone Apartment Services ships an update every 10 months, SÆR every 6 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Cornerstone Apartment Services versus SÆR: the parameters behind the verdict, then further details
ParameterCornerstone Apartment ServicesSÆR
PriceFreeFree
Rating4.3 (760 ratings)5.0 (2 ratings) — better
Positive reviews52.1% of reviews—
Number of ratings760 — better2
Update frequencyEvery 10 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better17.6
Further details — not scored
Size57 MB369 MB
Age rating4+4+
DeveloperYardi Systems, Inc.SUNLOFT STUDIO LLC

Customer experience

Cornerstone Apartment Services

All ratings599 ratings
Positive82.8%
Neutral2.8%
Negative14.4%
Written reviews117 reviews
Positive52.1%
Neutral7.7%
Negative40.2%

SÆR

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Cornerstone Apartment Services

Reported bugs

4 issues
  • Check scan feature not working
  • Rent payment issues and discrepancies
  • Maintenance requests not being addressed
  • App crashes and freezes

Requested features

4 requests
  • Ability to upload documents
  • More comprehensive maintenance options
  • Improved community engagement features
  • Integration with building access systems

SÆR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Cornerstone Apartment Services

No in-app purchases

None

SÆR

No in-app purchases

Questions

Is Cornerstone Apartment Services free?
Cornerstone Apartment Services is free to download, with no in-app purchases.
Is SÆR free?
SÆR is free to download, with no in-app purchases.
Which has better reviews, Cornerstone Apartment Services or SÆR?
SÆR is rated higher. Cornerstone Apartment Services averages 4.3 out of 5 from 760 ratings, while SÆR averages 5.0 from 2 ratings.
Do Cornerstone Apartment Services or SÆR have ads?
Neither Cornerstone Apartment Services nor SÆR shows ads.
Which is updated more often, Cornerstone Apartment Services or SÆR?
Cornerstone Apartment Services ships an update every 10 months, and SÆR every 6 weeks. Most recently, Cornerstone Apartment Services was updated on October 30, 2026 and SÆR on October 24, 2026.

Other comparisons