Comparison

KYFCAM vs Stair Stringer Calculator Pro

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

Head to head
About

KYFCAM

This free utility app allows you to view live video feeds from your camera. It offers motion detection with push or email alerts, and enables two-way audio communication. You can also remotely capture screenshots and start recordings.

Highlights
  • Live video streaming
  • Motion detection alerts
  • Two-way audio communication
  • Remote screenshot capture
  • Remote recording start
Features
Read full description

Via l'application gratuite KYFCAM visualisez l'image vidéo de la caméra en direct. En activant la fonction alerte, la caméra enregistre automatiquement dès qu’un mouvement est détecté et envoie une notification (push ou e-mail). Vous pouvez utiliser la fonction micro et haut parleur pour communiquer via la caméra ou l’appli. Réalisez des captures d’écran et démarrez l'enregistrement à distance.

About

Stair Stringer Calculator Pro

Features
Read full description

Stair Stringer Calculator lays out a straight flight of stairs from three measurements and tells you how to cut the stringers — in carpenter's fractions, not decimals. Enter the total rise, the tallest riser you'll accept and your tread depth. You get the riser count and exact riser height, the tread count, total run, stringer length and stair angle, plus a to-scale drawing of the cut stringer. CUT IT RIGHT • Riser height is rounded so it never exceeds your maximum • The first riser cut is dropped by your tread thickness, so every finished step is equal • Framing square settings and the step-off distance along the board edge • Notch depth and the solid wood left under the notches (throat) for a 2x10, a 2x12 or any board depth • How many stringers to cut for your stair width, and their spacing • Type measurements the way you read a tape: 108 1/2, 9' 0-1/2", 7 3/4 CHECK IT BEFORE YOU CUT Every layout is checked, and the result shows what passed, not only what failed: • IRC R311.7: maximum riser 7-3/4", minimum tread 10", maximum rise of one flight 151", minimum width 36", nosing and handrail requirements • AWC DCA 6 deck-stair stringer limits: at least 5" of throat, a 6'-0" maximum span for cut stringers, stringers no more than 18" on center • The stride rule 2R + T for a comfortable stair (24–25 in; 590–650 mm per DIN 18065 when you work in millimeters) FULL CUT LIST AND PDF • Height, run and board-edge mark for every step • A PDF layout sheet with the drawing, cut list and code check for your crew or inspector • Unlimited history: reopen any saved layout with its drawing and checks INCHES OR MILLIMETERS Switch units any time. Inch results read like a tape measure, to the nearest 1/16". WORKS THE WAY YOU DO • All calculations run on your device — no account or sign-in required. • Calculations and saved history work offline on the job site • No ads. Usage reporting can be turned off in Settings • The app sends verified purchase records and feedback you choose to submit • English and Spanish interface SIMPLE PRICING The calculation, drawing and code check are free, and the free version keeps your 10 most recent layouts. One in-app purchase unlocks the full cut list, PDF export and unlimited history. No subscription. The formula sources are listed in the app: IRC 2021 Section R311.7, AWC DCA 6-15 Figures 28–29, and the stride rule. This app is a layout aid; always verify against the building code in force at your job site.

Screenshots

KYFCAM3 screens
Stair Stringer Calculator Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: KYFCAM at none against Stair Stringer Calculator Pro's 1. KYFCAM also leads on device support (3 vs 1) and iOS requirement (10.0 vs 17.0). Stair Stringer Calculator Pro's advantage is update cadence (every 3 weeks vs every 3 months). On price and ads 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 Stringer Calculator Pro sells 1 one-off in-app purchase. KYFCAM asks for nothing beyond the download.

UpkeepUpdate frequency

KYFCAM ships an update every 3 months, Stair Stringer Calculator Pro every 3 weeks. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

Scorecard4 real differences · 6 level
KYFCAM versus Stair Stringer Calculator Pro: the parameters behind the verdict, then further details
ParameterKYFCAMStair Stringer Calculator Pro
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS10.0 — better17.0
Further details — not scored
Size90 MB4 MB
Age rating4+4+
DeveloperJSW PACIFIC CORPORATION京昌 陈

In-app purchases

None

KYFCAM

No in-app purchases

1 purchases

Stair Stringer Calculator Pro

One-time1
  • Stair Stringer Pro$9.99

Questions

Is KYFCAM free?
KYFCAM is free to download, with no in-app purchases.
Is Stair Stringer Calculator Pro free?
Stair Stringer Calculator Pro is free to download, with in-app purchases available.
Do KYFCAM or Stair Stringer Calculator Pro have ads?
Neither KYFCAM nor Stair Stringer Calculator Pro shows ads.
Which is updated more often, KYFCAM or Stair Stringer Calculator Pro?
KYFCAM ships an update every 3 months, and Stair Stringer Calculator Pro every 3 weeks. Most recently, KYFCAM was updated on November 3, 2026 and Stair Stringer Calculator Pro on November 13, 2026.

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