Comparison

ZCalcIt vs Kashf Lens

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

Head to head
About

ZCalcIt

Read full description

• Basic add, subtraction, multiply, divide, and power calculations. • Create variables to reuse in calculations. • Library of basic functions: sine, cosine, tangent, and more. • Units: Unit conversion (i.e., linear, time, temperature) functions. • Organized a set of calculations into projects for future references. • Documentation: Complete built-in documentation of all functions with numerous examples to get you started quickly.

About

Kashf Lens

Features
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Kashf Lens turns your iPhone into a multi-sensor exploration tool. Visualize real-time data from three built-in sensors - magnetometer, microphone, and camera - presented through a sleek, immersive interface. IMPORTANT: Kashf Lens reads raw sensor data from your iPhone's hardware. It is NOT a professional inspection device and does NOT reliably locate objects inside walls. Sensor readings are influenced by many environmental factors and should be treated as exploratory data, not definitive results. WHAT THE SENSORS MEASURE: MAGNETOMETER Reads magnetic field intensity in microteslas using your iPhone's built-in magnetometer. Displays real-time fluctuations as you move your device near surfaces. Magnetic field changes may be caused by nearby electronics, metal structures, Earth's field variations, or other environmental sources. Uses Kalman filtering for smoother readings. SOUND FREQUENCY ANALYZER Records audio from your iPhone's microphone when you tap a surface. Analyzes the frequency spectrum using FFT (Fast Fourier Transform) to compare sound characteristics. Different surface materials produce different acoustic responses. CAMERA SURFACE INSPECTOR Uses your iPhone's camera with image processing to highlight visual textures, edges, and surface patterns in real time. Applies saliency detection algorithms to identify areas of visual interest on surfaces. FEATURES: - Real-time sensor data visualization - Room-by-room session logging - Advanced haptic feedback (Core Haptics) - Dark, immersive interface optimized for OLED - 100% offline - no data leaves your device - Educational sensor exploration WHO USES KASHF LENS: - Curious minds exploring how phone sensors work - Students learning about magnetism and acoustics - DIY hobbyists experimenting with sensor readings - Paranormal enthusiasts and Ruqyah practitioners - Anyone interested in environmental sensor data Results vary based on device model, environmental conditions, and surface materials. Kashf Lens is an educational sensor exploration app. It does not replace professional tools or inspection equipment. Your data never leaves your device. Full privacy, always offline. Download free today.

Screenshots

ZCalcIt2 screens
Kashf Lens4 screens

Verdict

The call

The clearest difference is update cadence: Kashf Lens at weekly against ZCalcIt's every 11 months. ZCalcIt's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ZCalcIt ships an update every 11 months, Kashf Lens weekly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

Scorecard2 real differences Ā· 4 level
ZCalcIt versus Kashf Lens: the parameters behind the verdict, then further details
ParameterZCalcItKashf Lens
PriceFreeFree
Update frequencyEvery 11 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.216.0 — better
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperZynergy AppsAzziz Mimouni

In-app purchases

None

ZCalcIt

No in-app purchases

None

Kashf Lens

No in-app purchases

Questions

Is ZCalcIt free?
ZCalcIt is free to download, with no in-app purchases.
Is Kashf Lens free?
Kashf Lens is free to download, with no in-app purchases.
Do ZCalcIt or Kashf Lens have ads?
Neither ZCalcIt nor Kashf Lens shows ads.
Which is updated more often, ZCalcIt or Kashf Lens?
ZCalcIt ships an update every 11 months, and Kashf Lens weekly. Most recently, ZCalcIt was updated on November 3, 2026 and Kashf Lens on October 28, 2026.

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