Comparison

Gatekeeper vs Building Defects Tracker

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

Head to head
About

Gatekeeper

This app helps you manage unwanted communications by filtering spam texts based on custom rules and blocking specific phone numbers. It prioritizes your privacy by processing all message data directly on your device.

Highlights
  • Customizable text message filtering by keywords, numbers, and prefixes
  • Block unwanted incoming calls
  • Create an 'Allowed list' for trusted contacts
  • On-device message processing for privacy
  • Optional AI filter for advanced spam detection (Pro)
  • Smart matching for spelling variants (Pro)
Features
Read full description

Filter spam texts. Set your own rules. Gatekeeper filters text messages by the words, numbers and prefixes you choose, and blocks calls from the phone numbers you add. Messages are checked on your device and never sent to us. WHAT YOU GET • Your own rules for texts: filter SMS by keyword, phone number or prefix. A keyword can be a word such as "jackpot" or "lottery"; a prefix such as +44 or +1900 covers every number that starts with it. Add as many rules as you need. • Calls: block calls from the phone numbers you add. Enter each one as a full number with country code, at least 7 digits. Prefixes work for texts only, not for calls. • Allowed list: add numbers, prefixes or sender names that Gatekeeper does not filter, for example the name of a shop that sends you messages you want to keep. • Your lists: three tiles on the Home screen open your blocked texts, your blocked calls and your Allowed list. • Messages stay on your device: Gatekeeper never uploads your messages or your call history. Message text is never stored or sent anywhere. Details of the small profile we keep for your installation are in our Privacy Policy. HOW IT WORKS ON IPHONE Gatekeeper works as an iOS message filter. When a text arrives from a sender who is not in your Contacts, iOS asks Gatekeeper what to do with it. Gatekeeper compares the sender and the words with your rules, on your iPhone. A text that matches goes to the spam list in Messages instead of your inbox. Apple applies message filters only to senders who are not in your Contacts, so messages from people you have saved are not filtered. For calls, Gatekeeper uses Apple's call blocking. Once you switch it on, calls from the numbers you added are blocked. SET UP IN THREE STEPS 1. Open Gatekeeper and follow the in-app guide to switch on the message filter in iOS Settings. 2. Add your first rule: a word, a number or a prefix. 3. Switch on call blocking in the in-app guide, then add the numbers you want to block from calling you. OPTIONAL SUBSCRIPTION PLANS Pro is an optional subscription. It adds Smart matching and the AI filter. Your own rules, the Allowed list and call blocking do not need a subscription. THE AI FILTER AND SMART MATCHING (OPTIONAL, PRO) The AI filter (Pro) checks messages against ready-made spam word lists in several languages, chosen and maintained by us and built into the app. It is keyword matching, not machine learning, and it works on your device. Smart matching (Pro) also catches common spelling variants of your words, such as with or without accents. It works for words written in Latin letters. Both are optional. Turn either off at any time and filter only your own words. GOOD TO KNOW No filter is perfect. Check the spam list in Messages now and then. Call rules need a full number with country code (at least 7 digits). Short prefixes such as +44 work for texts only. Apple applies message filters only to senders who are not in your Contacts. Terms of Use: https://gatekeeperapp.web.app/terms

About

Building Defects Tracker

Features
Read full description

Building Defects Tracker keeps your defect list, from the walk-through to the finished PDF. Now in four languages: English, German, French and Italian. Add rooms, record defects with a photo and a note, tick them off. At the end you get a clean report you can pass on. FOUR LANGUAGES • Interface and PDF report in English, German, French and Italian • The app follows your device language • Trade terms follow Swiss usage: defect, handover and acceptance, warranty, contractor, owner HOW YOU WORK • Create a project: an apartment, a house or a building site, with address • Add rooms and sort them in your own order • Record defects: title, note, deadline, as many photos as you need • Mark as resolved, and the date is kept PHOTO DOCUMENTATION • Take a photo directly or choose one from your photo library • Several images per defect, full screen, each one removable • The images appear in the report, not just in the list THE REPORT • A4 PDF with header, summary and page numbers • One section per room, one block per defect with status and photos • Pass it on to the site manager, contractors or property management OVERVIEW • Progress per project and per room • Filter: all, open, resolved • Overdue deadlines stand out at once • Each room gets its own symbol, in the report too YOUR DATA, YOUR CONTROL • Export everything: projects, rooms, defects and photos in one backup file • Import it all again, adding to or replacing what is there • No account, no cloud, no lock-in • New device or reinstall: import the backup and carry on SET-UP • Standard rooms in one tap: kitchen, bathroom, utility room, cellar and more • Light, dark or follow the device, plus a compact list view WHO IT IS FOR Buyers at apartment handover, site managers and tradespeople on site, property managers at tenant changeover. PRIVACY No account, no sign-in, no ads, no analytics. The app makes no network connection: all data and photos stay on your device. What you have recorded, you can take with you in full at any time. Free.

Screenshots

Gatekeeper4 screens
Building Defects Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Building Defects Tracker at none against Gatekeeper's 3. Gatekeeper's advantage is update cadence (weekly vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads 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. Gatekeeper sells 3 in-app purchases, starting at $3.99 per 7 days. Building Defects Tracker asks for nothing beyond the download.

UpkeepUpdate frequency

Gatekeeper ships an update weekly, Building Defects Tracker every 2 months. Both last shipped on October 31, 2026.

Scorecard3 real differences · 7 level
Gatekeeper versus Building Defects Tracker: the parameters behind the verdict, then further details
ParameterGatekeeperBuilding Defects Tracker
PriceFreeFree
Rating4.5 (8 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings8 — better—
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size85 MB1 MB
Age rating4+4+
DeveloperZADE TECH YAZILIM ANONIM SIRKETIAlbert Frick

In-app purchases

3 purchases

Gatekeeper

Subscriptions3
  • Gatekeeper Pro Weekly$3.997 Days
  • Gatekeeper Pro Monthly Offer$6.991 Month
  • Gatekeeper Pro Monthly$9.991 Month
None

Building Defects Tracker

No in-app purchases

Questions

Is Gatekeeper free?
Gatekeeper is free to download, with in-app purchases available.
Is Building Defects Tracker free?
Building Defects Tracker is free to download, with no in-app purchases.
Do Gatekeeper or Building Defects Tracker have ads?
Neither Gatekeeper nor Building Defects Tracker shows ads.
Which is updated more often, Gatekeeper or Building Defects Tracker?
Gatekeeper ships an update weekly, and Building Defects Tracker every 2 months. Most recently, Gatekeeper was updated on October 31, 2026 and Building Defects Tracker on October 31, 2026.

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