Comparison

ClinoScope vs Perci

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

Head to head
About

ClinoScope

This tool measures tilt angles and object inclination using your device's sensors. It offers real-time display of slopes and angles in different modes, with the ability to save measurements as images.

Highlights
  • Measures 3D angles of elevation, slope, and inclination
  • INCLINE mode for inclinometer readings
  • TIME mode for gyro-positioning time graph
  • Adjustable sensor sampling period
  • Snapshot feature to save measurements
  • Supports various iPhone orientations
Read full description

"ClinoScope" is a handy incline analysis tool that measures tilt angles and the three-dimensional inclination of objects relative to gravity, using your iPhone’s accelerometer and gyro sensors. You can quickly check slopes in various places, like uneven floors, leaning buildings, or leveling equipment. It can display the current terminal posture in real time by two measurement modes: INCLINE mode for inclinometer readings and TIME mode for a gyro-positioning time graph. Features: - Optimized for iPhone, Compact code size. - Measurement of three-dimensional angles of elevation, slope or inclination. - Inclination measurement function (INCLINE) - Gyro-positioning time graph function (TIME) - Switching function of sensor sampling period (SLOW): fast 10Hz / slow 1Hz - Snapshot (SNAP): Capture the measurement results to Photos. Applications: - Measurement of tilt states, such as furniture and floors. - Adjustment of the horizontal reference level when installing the equipment. - Measuring angle on moving vehicles. - Setting adjustment, such as audio equipment. - Use in various Sports, for example, measurement of the green inclination angle of the golf. Functions: 1) INCLINE (3-dimensional inclinometer) INCLINE mode utilizes the information of the acceleration sensor and operates as the three-dimensional inclinometer. It displays the angle and gradient in visually in accordance with the spatial attitude of the iPhone devices. The measurement display is slightly different by the terminal posture state (FaceUp, Portrait, Landscape) as follows: - FaceUP (Terminal horizontal, Flat): FaceUP is the state that the terminal has become horizontal to the ground plane. In this case, it appears the angle of pitch and roll in the arc, and the angle of yaw in the circle needle. It also displays the cross mark (+) on the position of the zenith (or the nadir), such as seeing the terminal from directly above. - Portrait (Vertical possession): Portrait is a state that you have hold the terminal to the vertical. The lower side of the Home button is standard. In this case, it appears the angle of pitch and yaw in the arc, and the angle of the roll in a circle needle. - Landscape (Horizontal possession): Landscape is the state that you have got sideways a terminal, the home button right side will be the standard. In this case, it appears the angle of roll and yaw in the arc, and the angle of the pitch in the circle needle. 2) TIME (time graph) TIME mode is used to see in real time the data of the 3-axis (pitch / yaw / roll) angle and the angular velocity output from the gyro sensor to display the graph. Please use this mode in the state of FaceUP. - Angle display: pitch: -π/2 - π/2 [rad] (-90° - +90°) yaw: -π - π [rad] (-180° - +180°) roll: -π - π [rad] (-180°- +180°) - Acceleration: pitch/yaw/roll: -4π(-12.56) - +4π(12.56) [rad/sec] 3) Snapshot Measurement results can be saved as a picture image in the Photo Library. Time stamp and device orientation information will also be displayed. # Display of device orientation: - Flat: indicates terminal horizontal and is synonymous with FaceUP. - Portrait: indicates Vertical possession. - Landscape: indicates Horizontal possession. Note: - Avoid using the device with excessive acceleration as it may cause device malfunction. - To ensure accurate posture measurement, turn off “Portrait Orientation Lock” in the iPhone's Control Center. Please visit our iOS app support page for more information on this app.

About

Perci

Create personalized disaster readiness plans for your family with ease. This app generates comprehensive plans for various emergencies, including evacuation, home protection, and pet safety. Stay informed with extreme weather alerts and receive timely reminders to update your plans.

Highlights
  • Personalized readiness plans
  • Evacuation and home protection plans
  • Pet safety and school safety plans
  • Household needs and communication plans
  • Extreme weather alerts
  • Plan update reminders
Features
Read full description

Start with your zip code and family size. Perci will make all the readiness plans for you. In simple small steps. Once completed, forget about it. Perci will remind you when it is time update. Evacuation Plan. Protect Home Plan. Recovery Plan. Pet Safety Plan. School Safety Plan. Disaster Risk. Household Needs. Communication Plan. Shelter in Place Plan. Reliable disaster preparedness plans with total ease. When disaster strikes, you’ll have everything you need in one place, and we’ll guide you the entire way. Perci will get your whole family ready for any disaster - be it wildfires, floods, hurricanes, earthquakes, home fires, tornadoes, tsunamis, landslides, hail, heat waves, ice storms, lightning. Get latest extreme weather alerts. Use Perci for free, forever. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ClinoScope4 screens
Perci4 screens

Verdict

The call

The clearest difference is price: Perci at Free against ClinoScope's $3.99. Perci also leads on update cadence (fortnightly vs every 11 months) and device support (3 vs 1). ClinoScope's advantage is in-app purchases (none vs 6). On review sentiment 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

Perci is free to download; ClinoScope costs $3.99 up front. Perci sells 6 in-app purchases, starting at $3.99 per month. ClinoScope asks for nothing beyond the download.

UpkeepUpdate frequency

ClinoScope ships an update every 11 months, Perci fortnightly. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
ClinoScope versus Perci: the parameters behind the verdict, then further details
ParameterClinoScopePerci
Price$3.99Free — better
Rating—4.9 (16 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—16 — better
Update frequencyEvery 11 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.013.2 — better
Further details — not scored
Size0 MB73 MB
Age rating4+17+
DeveloperTOON,LLCPerci Ready LLC

Customer experience

ClinoScope

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Perci

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ClinoScope

No in-app purchases

6 purchases

Perci

Subscriptions6
  • Solo Monthly$3.991 Month
  • Duo$5.991 Month
  • Family$7.991 Month
Show 3 more
  • Solo$39.991 Year
  • Duo$59.991 Year
  • Family$79.991 Year

Questions

Is ClinoScope free?
ClinoScope costs $3.99, with no in-app purchases.
Is Perci free?
Perci is free to download, with in-app purchases available.
Do ClinoScope or Perci have ads?
Neither ClinoScope nor Perci shows ads.
Which is updated more often, ClinoScope or Perci?
ClinoScope ships an update every 11 months, and Perci fortnightly. Most recently, ClinoScope was updated on October 24, 2026 and Perci on October 24, 2026.

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