Comparison

Building Stack vs ChangeTime

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

Head to head
About

Building Stack

This app provides a mobile platform for property managers and tenants to access and manage rental property information. Tenants can submit maintenance requests, view building documents, and pay rent, while managers can handle rent payments, find new tenants, and communicate with residents.

Highlights
  • Submit maintenance requests
  • View building information and documents
  • Pay rent online
  • Receive real-time notifications
  • Manage tenant contact information
  • Automated listing process for new tenants
  • Track and manage maintenance issues
Features
Read full description

With the Building Stack app, property managers and tenants get a mobile access to all the convenient features of their Building Stack account. Tenants can quickly submit issues directly to management, as well as view important building information on their portal. Staying up to date with the current status of your rental unit has never been simpler. - Access your building’s rules, schedules and other important documents - Create maintenance requests and receive update notifications in real time - Pay your rent online by credit card, debit card or bank account - Receive important notices from the management team, rent payment reminders and more Property managers can access all their data, including building and unit amenities, tenant contact information, lease details and more, right at their fingertips. They can communicate with tenants and send real-time e-mail, SMS, phone call or push notifications. Portfolio vacancy rates and listing performance reports are only a few taps away. - Accept online rent payments - Find new tenants easily thanks to our automated listing process - Manage your employees’ access to information and features of the platform - Track and manage issues easily with real-time notifications and auto-assign features - Exchange messages with your tenants and employees - Share important documents and information with your tenants - View the location of your team members on a map App support: If you experience any problems with the Building Stack app, please e-mail us at info@buildingstack.com.

About

ChangeTime

Features
Read full description

Everything in your home has a clock on it. The furnace filter you installed last winter, the water filter in the fridge, the batteries in the smoke detector — they all need changing, and none of them will remind you. ChangeTime will. ADD ITEMS IN SECONDS • Snap a photo so every item is easy to spot in your list • Scan the barcode — the second time you buy the same filter, ChangeTime fills in everything and suggests the change date automatically • Or just type it in, with brand, description, and a private note for model numbers and sizes SET THE CHANGE DATE YOUR WAY • Say it: hold the mic and speak — "3 months from now" — and ChangeTime sets the date • Smart suggestions: ChangeTime knows the typical life of furnace filters, water filters, detector batteries, and more, and offers the right interval with one tap • Or pick the day on the calendar NEVER MISS A CHANGE • Reminders 7 days before, the day before, and on change day • Optional daily nudges while something stays overdue • Add change dates to your iOS Calendar automatically • See everything at a glance: Good, Soon, and Overdue — tap to filter ORGANIZED BY LOCATION OR ITEM • Kitchen, garage, basement, camper, musical intrument or vehicle— group items where they live, and filter the list with a tap • Swiped in a new filter? Tap "I Changed It" right on the reminder — the swap is logged and the next change is scheduled automatically STICK A LABEL ON IT • Print a QR label for any item and stick it on the equipment and scan it with your iPhone camera to jump straight to that item — check the date or mark it changed without searching ON YOUR WRIST • The full list, color-coded, on Apple Watch • Add items and update change dates from the watch — by dictation, smart suggestion, or a calendar picker — and everything syncs to your iPhone PRIVATE BY DESIGN • Everything stays on your device. No accounts, no cloud, no tracking — the camera, microphone, and speech recognition are used only in the moment, on the device. Install it. Change it on time. Repeat.

Screenshots

Building Stack4 screens
ChangeTime4 screens

Verdict

The call

The clearest difference is update cadence: ChangeTime at every 4 days against Building Stack's every 9 days. Building Stack's advantage is iOS requirement (15.6 vs 26.5). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Building Stack ships an update every 9 days, ChangeTime every 4 days. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
Building Stack versus ChangeTime: the parameters behind the verdict, then further details
ParameterBuilding StackChangeTime
PriceFreeFree
Rating4.8 (28 ratings) — better—
Positive reviews19.0% of reviews—
Number of ratings28 — better—
Update frequencyEvery 9 daysEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.6 — better26.5
Further details — not scored
Size85 MB7 MB
Age rating4+4+
DeveloperGotham Management IncFormatix, LLC

In-app purchases

None

Building Stack

No in-app purchases

None

ChangeTime

No in-app purchases

Questions

Is Building Stack free?
Building Stack is free to download, with no in-app purchases.
Is ChangeTime free?
ChangeTime is free to download, with no in-app purchases.
Do Building Stack or ChangeTime have ads?
Neither Building Stack nor ChangeTime shows ads.
Which is updated more often, Building Stack or ChangeTime?
Building Stack ships an update every 9 days, and ChangeTime every 4 days. Most recently, Building Stack was updated on October 18, 2026 and ChangeTime on October 3, 2026.

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