Comparison

Trigonometric Calculation vs Haikan Pipit

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

Head to head
About

Trigonometric Calculation

Features
Read full description

This is a calculation application for finding angles and side lengths of triangles. 1 We would appreciate a review if there are any problems such as calculation glitches. 2 I hope you will use this application for simple calculations. Please understand that we cannot be held responsible for any impact or disadvantage related to the quality of production activities caused by the calculations in this application.

About

Haikan Pipit

Calculate precise cut lengths for various pipe fittings and view their dimensions in a 3D catalog. Supports multiple fitting types with plans for future additions like sharing and quantity estimation.

Highlights
  • Cut length calculation for fitting combinations
  • 3D pipe catalog with dimension drawings
  • Support for DV, TS/HI, HT, White-thread, Water Supply Core, Butt-weld, and Stainless Press-Type fittings
  • Future updates planned for sharing and quantity estimation
  • View pipe and fitting shapes and dimensions
Features
Read full description

What is Piping Pipit? Piping Pipit is an app that lets you quickly calculate cut lengths from combinations of fittings. What you can do with Piping Pipit Cut length calculation  → Calculate cut lengths based on fitting combinations Check dimension drawings  → View pipe and fitting shapes and dimensions in a 3D pipe catalog Currently supported fittings DV fittings (PVC drainage pipes) TS/HI fittings (PVC water supply pipes) HT fittings (PVC supply pipes) White-thread fittings (Threaded malleable iron pipe fittings) Water Supply Core Fittings (Threaded Anti-Corrosion Pipe-End Fittings for Lined Steel Pipes) Butt-weld fittings Stainless Press-Type Fittings. Additional fittings will be supported in future updates. Features such as sharing containers and measurement results with others, as well as quantity estimation, are also planned. Stay tuned! For the Terms of Use of Piping Pipit, please see here (same content as available on the App Store): https://netstill.com/terms/

Screenshots

Trigonometric Calculation4 screens
Haikan Pipit4 screens

Verdict

The call

The clearest difference is in-app purchases: Trigonometric Calculation at none against Haikan Pipit's 2. Haikan Pipit's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, ads, device support and iOS requirement 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. Haikan Pipit sells 2 in-app purchases, starting at $3.99 per month. Trigonometric Calculation asks for nothing beyond the download.

UpkeepUpdate frequency

Trigonometric Calculation ships an update every 6 weeks, Haikan Pipit every 3 weeks. The most recent releases landed on May 16, 2026 and September 22, 2026 respectively.

Scorecard2 real differences ¡ 6 level
Trigonometric Calculation versus Haikan Pipit: the parameters behind the verdict, then further details
ParameterTrigonometric CalculationHaikan Pipit
PriceFreeFree
Positive reviews—0.0% of reviews
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsYesYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.5 — better15.6
Further details — not scored
Size5 MB220 MB
Age rating4+4+
DeveloperRisako AsaiNETSTILL LIMITED LIABILITY CO.

In-app purchases

None

Trigonometric Calculation

No in-app purchases

2 purchases

Haikan Pipit

Subscriptions2
  • ãƒ—ãƒ­į‰ˆīŧˆ1ãƒļ月īŧ‰7 Days trial$3.991 Month
  • ãƒ—ãƒ­į‰ˆīŧˆ1åš´é–“īŧ‰14 Days trial$39.991 Year

Questions

Is Trigonometric Calculation free?
Trigonometric Calculation is free to download, with no in-app purchases.
Is Haikan Pipit free?
Haikan Pipit is free to download, with in-app purchases available.
Do Trigonometric Calculation or Haikan Pipit have ads?
Both Trigonometric Calculation and Haikan Pipit show ads.
Which is updated more often, Trigonometric Calculation or Haikan Pipit?
Trigonometric Calculation ships an update every 6 weeks, and Haikan Pipit every 3 weeks. Most recently, Trigonometric Calculation was updated on May 16, 2026 and Haikan Pipit on September 22, 2026.

Other comparisons