Comparison

Stair Calculator vs MillerTech

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • Bluetooth battery monitoring
  • Real-time power usage
  • Battery voltage display
  • State-of-Charge tracking
  • Design and remaining capacity
Features
Read full description

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

Stair Calculator3 screens
MillerTech4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Stair Calculator versus MillerTech: the parameters behind the verdict, then further details
ParameterStair CalculatorMillerTech
PriceFreeFree
Rating4.1 (740 ratings)4.3 (6 ratings) — better
Positive reviews21.4% of reviews100.0% of reviews — better
Number of ratings740 — better6
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size1 MB42 MB
Age rating4+4+
DeveloperPhan Nhat ĐangLester Miller

Customer experience

Stair Calculator

All ratings738 ratings
Positive77.2%
Neutral5.0%
Negative17.8%
Written reviews28 reviews
Positive21.4%
Neutral7.1%
Negative71.4%

MillerTech

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

2 purchases

Stair Calculator

Subscriptions1
  • Annual Premium Package7 Days trial$9.991 Year
One-time1
  • Unlock all features$5.99
None

MillerTech

No in-app purchases

Questions

Is Stair Calculator free?
Stair Calculator is free to download, with in-app purchases available.
Is MillerTech free?
MillerTech is free to download, with no in-app purchases.
Which has better reviews, Stair Calculator or MillerTech?
MillerTech is rated higher. Stair Calculator averages 4.1 out of 5 from 740 ratings, while MillerTech averages 4.3 from 6 ratings.
Do Stair Calculator or MillerTech have ads?
Neither Stair Calculator nor MillerTech shows ads.
Which is updated more often, Stair Calculator or MillerTech?
Stair Calculator ships an update every 3 months, and MillerTech every 2 months. Most recently, Stair Calculator was updated on October 24, 2026 and MillerTech on October 7, 2026.

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