Stair Calculator vs MillerTech
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
MillerTech
Monitor your lithium batteries with Bluetooth technology. Get instant access to key battery stats like voltage, state-of-charge, and real-time power usage. Enhance your experience and gain peace of mind with at-a-glance data.
- Bluetooth battery monitoring
- Real-time power usage
- Battery voltage display
- State-of-Charge tracking
- Design and remaining capacity
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MillerTech Lithium Battery monitoring system with Bluetooth technology. A total game-changer, this app will give users the ability to see important battery stats and data at a glance. Meaning now you can spend more time doing what matters and less time guessing! With this technology the user has instant access to, Battery voltage Battery State-of-Charge Real time power usage Design capacity Remaining capacity We believe these capabilities will forever enhance your experience, giving you the piece of mind that you deserve!
Screenshots
Verdict
The clearest difference is review sentiment: MillerTech at 100% against Stair Calculator's 21%. MillerTech also leads on in-app purchases (none vs 2) and rating (4.3 vs 4.1). Stair Calculator's advantage is ratings volume (740 vs 6). 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. MillerTech asks for nothing beyond the download.
MillerTech holds the better App Store score, 4.3 against 4.1. That said, the two scores are not equally well evidenced: Stair Calculator has 740 ratings behind it against 6, 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 100% of MillerTech's.
Stair Calculator ships an update every 3 months, MillerTech every 2 months. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.
| Parameter | Stair Calculator | MillerTech |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (740 ratings) | 4.3 (6 ratings) — better |
| Positive reviews | 21.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 740 — better | 6 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | Lester Miller |
Customer experience
Stair Calculator
MillerTech
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
MillerTech
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Stair Calculator
- Annual Premium Package7 Days trial$9.991 Year
- Unlock all features$5.99
MillerTech
No in-app purchases
Questions
Is Stair Calculator free?
Is MillerTech free?
Which has better reviews, Stair Calculator or MillerTech?
Do Stair Calculator or MillerTech have ads?
Which is updated more often, Stair Calculator or MillerTech?
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