Comparison

Construction Calculator Pro #1 vs Keyring

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

Head to head
About

Construction Calculator Pro #1

This app provides advanced construction math tools for builders and contractors. It offers precise calculations for framing, material estimation, and complex angles, helping to reduce errors and save time on the job.

Highlights
  • Dimensional conversions (feet-inch, decimal, metric)
  • Rafter, stair, and angle calculations
  • Area, volume, and material estimations
  • Roofing, drywall, and siding estimates
  • Quick input with preset fraction buttons
Features
Read full description

Construction Calculator Pro #1 The Smartest Tool for Builders, Contractors, and Tradespeople Whether you’re framing a roof, estimating materials, or laying out stairs, Construction Calculator Pro #1 gives you the precision, speed, and reliability you need on the job. Designed for professionals, this app offers a full suite of advanced construction math features — from dimensional conversions to complex angle and rafter calculations — all in one powerful, easy-to-use tool. Key Features: Advanced Construction Math • Easily switch between feet-inch-fractions, decimal feet, metric units, and more • Preset fraction buttons for quick and accurate input • Convert seamlessly between all major formats Rafter, Stair & Angle Solutions • Calculate rise, run, and diagonal instantly • Handle common, hip, valley, and jack rafters with ease • Get precise cuts and angles for stairs, rake walls, and compound miters Area, Volume & Material Estimations • Compute square footage, cubic volume, and plan areas • Estimate roofing (bundles, sheets, pitch), drywall, siding, and more • Quickly calculate block and footing quantities Why Professionals Choose It: • Eliminates guesswork and reduces costly errors • Saves time on-site and during planning • Offers the versatility of two top-tier construction calculators in one app Built for those who build. Download Construction Calculator Pro #1 and put industry-grade power in your pocket. Terms of Use: https://apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://equable-stock-b78.notion.site/Privacy-Policy-230ecf57511e8055b033ff10a63428be

About

Keyring

Easily identify and organize your keys by photographing and labeling them. Track loaned keys, log their last known locations, and receive notifications for due dates. The app offers offline functionality and prioritizes user data privacy.

Highlights
  • Photograph and label keys
  • Track loaned keys and due dates
  • Log key locations with maps
  • Duplicate key detection
  • Full activity history
  • Offline functionality
  • Siri Shortcuts and Spotlight search
Features
Read full description

Stop wondering what that mystery key opens. Keyring lets you photograph and label every key so you always know which is which -- then tap the ring to fan them out for quick browsing. NEW IN 2.1 - Loan reminders -- get notified the day a loaned key is due back, not just a note that it's overdue ALSO INCLUDED - Loan tracking -- know exactly who has your spare key and when it's due back - Location confirmation -- log where you last saw a key, with a map - Duplicate detection -- instantly spot near-identical keys by photo, entirely on-device - Full activity history for every key - Siri Shortcuts and Spotlight search FREE Photograph and organize up to 5 keys on one keyring, completely free -- no account needed, everything stays on your device. KEYRING PRO -- $2.99/month, cancel anytime (a one-time unlock option is also available) - Unlimited keys and keyrings - Loan, spare, and lost-key tracking - Location history with maps - Full activity log - Visual duplicate detection - Search across every keyring Your keys, your data. Keyring works fully offline and never asks for an account. Privacy Policy: https://shimondeitel.github.io/keyring-site/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Construction Calculator Pro #14 screens
Keyring4 screens

Verdict

The call

The clearest difference is rating: Keyring at 5.0 against Construction Calculator Pro #1's 4.5. Keyring also leads on review sentiment (100% vs 67%) and update cadence (monthly vs every 12 months). Construction Calculator Pro #1's advantage is in-app purchases (none vs 1) and ratings volume (96 vs 1). On price, ads, device support and iOS requirement 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. Keyring sells 1 one-off in-app purchase. Construction Calculator Pro #1 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Keyring holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Construction Calculator Pro #1 has 96 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Construction Calculator Pro #1's written reviews are positive against 100% of Keyring's.

UpkeepUpdate frequency

Construction Calculator Pro #1 ships an update every 12 months, Keyring monthly. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
Construction Calculator Pro #1 versus Keyring: the parameters behind the verdict, then further details
ParameterConstruction Calculator Pro #1Keyring
PriceFreeFree
Rating4.5 (96 ratings)5.0 (1 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings96 — better1
Update frequencyEvery 12 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size15 MB1 MB
Age rating4+4+
DeveloperOryxJoshua Deitel

Customer experience

Construction Calculator Pro #1

All ratings96 ratings
Positive90.6%
Neutral3.1%
Negative6.3%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Keyring

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Construction Calculator Pro #1

No in-app purchases

1 purchases

Keyring

One-time1
  • Pro Unlock$2.99

Questions

Is Construction Calculator Pro #1 free?
Construction Calculator Pro #1 is free to download, with no in-app purchases.
Is Keyring free?
Keyring is free to download, with in-app purchases available.
Which has better reviews, Construction Calculator Pro #1 or Keyring?
Keyring is rated higher. Construction Calculator Pro #1 averages 4.5 out of 5 from 96 ratings, while Keyring averages 5.0 from 1 ratings.
Do Construction Calculator Pro #1 or Keyring have ads?
Neither Construction Calculator Pro #1 nor Keyring shows ads.
Which is updated more often, Construction Calculator Pro #1 or Keyring?
Construction Calculator Pro #1 ships an update every 12 months, and Keyring monthly. Most recently, Construction Calculator Pro #1 was updated on September 27, 2026 and Keyring on October 7, 2026.

Other comparisons