Stair Calculator vs dooplicator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stair Calculator
This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.
- Calculate stair construction parameters
- Flexible input for Run or Total Run
- Determine largest and smallest step sets
- Support for various units
- Copy results to clipboard
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Stair Calculator helps you calculate and compare staircase dimensions. FEATURES • Calculate using Run, Total Run, or Stair Angle • Enter a specific number of Runs or explore all calculated options • Support Metric and Imperial units • View detailed measurements and stair diagrams • Export results as a PDF or image • Copy results to the clipboard IMPORTANT Results are generated based on user-provided values and general calculation models. The app is intended for reference and educational purposes only. Please verify all measurements, local building requirements, and safety standards before actual construction. SUBSCRIPTION This subscription package offers unlimited access to all app features throughout the subscription period. • Payment will be charged to your Apple Account at confirmation of purchase. • The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your Apple Account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be identified. • Subscriptions may be managed and auto-renewal may be turned off in your Apple Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. PRIVACY POLICY https://13520178.github.io/StairCalc/policy.html TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CONTACT If you have any questions or suggestions, please contact us. Email: phannhatd@gmail.com
dooplicator
Create a digital backup of your physical key to avoid the stress of losing it. This utility eliminates the need for costly dealer programming, offering a convenient solution for emergencies or as a spare.
- Digital key backup
- No dealer programming
- Emergency key solution
- Spare key creation
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- Create a digital backup of your key and never worry about losing it - No need to visit dealer for expensive programming - Great for emergency use or as a spare key
Screenshots
Verdict
The clearest difference is review sentiment: dooplicator at 96% against Stair Calculator's 21%. dooplicator also leads on rating (4.8 vs 4.1) and in-app purchases (none vs 2). Stair Calculator's advantage is ratings volume (740 vs 69). On price, update cadence, 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
Both are free to download. Stair Calculator sells 2 in-app purchases, starting at $9.99 per year. dooplicator asks for nothing beyond the download.
dooplicator holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: Stair Calculator has 740 ratings behind it against 69, so its average is the more settled of the two. Written reviews point the same way: 21% of Stair Calculator's written reviews are positive against 96% of dooplicator's.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 24, 2026.
| Parameter | Stair Calculator | dooplicator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (740 ratings) | 4.8 (69 ratings) — better |
| Positive reviews | 21.4% of reviews | 95.7% of reviews — better |
| Number of ratings | 740 — better | 69 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | Dooplicator Special Technologies Inc. |
Customer experience
Stair Calculator
dooplicator
User reviews
Stair Calculator
From 740 App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Helpful information
- 🚀 Provides useful calculations
Room to improve
- 🐛 Doesn't work as expected
- 🔒 No way to cancel subscription
- 🔒 Difficult to cancel trial
- 🤬 Obnoxious ads
- 🤬 Misleading as a learning tool
dooplicator
From 69 App Store ratingsWhat we love
- 🚀 Fast shipping and delivery
- 👍 Easy to use app and process
- 💰 Cost-effective compared to dealers
- 💡 Innovative key duplication service
- 🛠️ Great customer support
Room to improve
- ⏳ Shipping can take a while (customs)
- 🇨🇳 Some items ship from China
- 🐛 Key not working initially (resolved)
- ❓ Compatibility with older models unclear
Bugs and requests
Stair Calculator
Reported bugs
2 issues- Subscription numbers don't add up
- Doesn't provide promised features after purchase
Requested features
3 requests- Option to uninstall app
- Ability to calculate run based on rise and landing space
- Provide more detailed diagrams and visuals
dooplicator
Reported bugs
3 issues- First key lost in mail (resolved by reshipment)
- One instance of a broken key received
- One instance of a wrong key received (resolved)
Requested features
2 requests- App for older Skidoo models (pre-2015)
- Include a split ring with the key
In-app purchases
Stair Calculator
- Annual Premium Package7 Days trial$9.991 Year
- Unlock all features$5.99
dooplicator
No in-app purchases
Questions
Is Stair Calculator free?
Is dooplicator free?
Which has better reviews, Stair Calculator or dooplicator?
Do Stair Calculator or dooplicator have ads?
Which is updated more often, Stair Calculator or dooplicator?
Other comparisons
