Comparison

One North vs Protractor°

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

Head to head
About

One North

Read full description

One North is a digital access key for tenants & their employees at Solaris One North building. The app is required for entry and exit of security gates at both the North and South blocks and usage of cargo lifts (request for permission at reception counter). Users may use the app to invite guests, whom will receive a digital access card via email to access the security gates. Access to the app is limited to building tenants & their employees only, please request for an account from your company's system administrator. Guests to the building may receive a digital guest access card from their respective inviter or request for one from the reception counter.

About

Protractor°

This app transforms your iPhone Duo into a digital protractor. Measure angles on paper or between surfaces by simply folding the device to match the desired angle and reading the degrees. Save and organize your measurements for later use.

Highlights
  • Measure angles on paper
  • Measure angles between surfaces
  • Uses iPhone Duo's folding hinge
  • Record and save angle readings
  • Organize measurements by date
Features
Read full description

Use your iPhone Duo as a protractor. Fold it to match an angle and read the degrees. Requires iPhone Duo with iOS 27.1 or later. Measurement uses the phone's folding hinge and isn't available on other devices. MEASURE ON PAPER Stand the phone on its bottom edges and line up each edge with a line on the page. Open or close the fold until both edges match. CHECK TWO SURFACES Rest each half of the phone against a surface and fold it to fit the angle where they meet. Read the angle as you adjust it. KEEP YOUR READINGS Tap Record when you're ready. History groups your saved angles by day and shows the time of each reading. Delete individual readings or clear them all. Next time you need a protractor, unfold your phone.

Screenshots

One North4 screens
Protractor°4 screens

Verdict

The call

The clearest difference is in-app purchases: One North at none against Protractor°'s 1. One North also leads on iOS requirement (15.1 vs 26.0). Protractor°'s advantage is update cadence (every 2 days vs every 5 weeks). 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. Protractor° sells 1 one-off in-app purchase. One North asks for nothing beyond the download.

UpkeepUpdate frequency

One North ships an update every 5 weeks, Protractor° every 2 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
One North versus Protractor°: the parameters behind the verdict, then further details
ParameterOne NorthProtractor°
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size36 MB13 MB
Age rating4+4+
DeveloperChimeric Technologies Pte. Ltd.Just2us Pte Ltd

In-app purchases

None

One North

No in-app purchases

1 purchases

Protractor°

One-time1
  • Protractor Lifetime Access$3.99

Questions

Is One North free?
One North is free to download, with no in-app purchases.
Is Protractor° free?
Protractor° is free to download, with in-app purchases available.
Do One North or Protractor° have ads?
Neither One North nor Protractor° shows ads.
Which is updated more often, One North or Protractor°?
One North ships an update every 5 weeks, and Protractor° every 2 days. Most recently, One North was updated on November 7, 2026 and Protractor° on October 31, 2026.

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