Comparison

SPIDER_PLUS vs Kouzaitap for iPad

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

Head to head
About

SPIDER_PLUS

Features
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This application is SPIDER PLUS for English Version. ----What is SPIDER PLUS?---- SPIDER PLUS is a field work management and information sharing system specialized in the construction industry. Features *Download and store a large quantity of drawings data in a tablet PC and no need to carry around paper drawings. *Attach memos and photos on the drawings at the field. *There is a folder function similar to Windows Explorer, and thumbnail images are also displayed and desired drawings can be easily found. *Approximate distance can be measured through a scale function. *Drawings and photos turned into PDF files on an iPad can be mailed directly without going through a server. *Share information among users in real-time. *Memos and photos can be output as EXCEL/PDF report. ----How to use SPIDER PLUS?---- 1. Register drawings on the server 2. Download to mobile devices from the server and carry around 3. Attach memos and photos on the drawings at the field 4. Share information among users in real-time 5. Edit and output contents entered from mobile devices using a web browser.

About

Kouzaitap for iPad

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【Introduction】 This application calculates the weight(kg) and surface area(m2) of ​​steel used in Japan (JIS Ferrous Materials & Metallurgy). It also provides a calculation of cross-sectional shape and performance. 【Functions】 You can share, memorize, and e-mail calculations with text and CSV files. You can enter standard of the steel plate. You will receive advertisements. 【Steels】 ●PLATE & SHEET Hot Rolled Steel Plates Checkered Steel Plates Expanded Metals Steel Decks Cold-reduced carbon steel sheets Hot Rolled Stainless Steel Plates Cold Rolled Stainless Steel Plates Circular Steel Plates QL Deck Super E Deck ●STEEL SECTION & BAR H Beams Channels Equal Leg Angles Unequal Leg Angles I Beams Flat Bars Round Bars Square Bars Unequal Leg and Unequal Thickness Angles Bulb Flats T Beams CT Beams Fixed Outer Dimensions H Beams ●LIGHT GAUGE STEEL Light Channel Steel Light Z Steel Light Angle Steel Lip Channel Steel Lip Z Steel Hat Steel Light Gauge H Steels Light Gauge Lip Type H Steels 鋼製天井下地材(19形) 鋼製天井下地材(25形) 鋼製壁下地材 ●STRUCTURAL STEEL TUBE/PIPE SHEET PILE Carbon Steel Tubes General(STK) Carbon Steel Square Pipes(STKR) Carbon Steel Rectangle Pipes(STKR) Carbon Steel Tubes Building(STKN) Steel Pipe Piles(SKK) Steel H Piles(SHK) U-Shaped Steel Sheet Pile Steel Bars For Concrete Reinforcement Carbon Steel Square Pipes Machine(STKMR) Carbon Steel Tubes Machine(STKM) 建築構造用冷間ロール成形角形鋼管(BCR) 建築構造用冷間プレス成形角形鋼管(BCP) トルシア形高力ボルト 高力六角ボルト ND core ●STEEL PIPES FOR PIPING Carbon Steel Pipes Ordinary Piping(SGP) Arc Welded Carbon Steel Pipes(STPY) Coated Steel Pipes Water Service(STW) Carbon Steel Pipes Pressure Service(STPG) Carbon Steel Pipes High Pressure Service(STS) Carbon Steel Pipes High Temperature Service(STPT) Alloy Steel Pipes(STPA) Steel pipes Low Temperature Service(STPL) Stainless Steel Pipes(SUS304TP) Stainless Steel Pipes(SUS316TP) Large Diameter Welded Stainless Steel Pipes(SUS304TPY) Large Diameter Welded Stainless Steel Pipes(SUS316TPY) ●SECTIONAL SHAPES H/I Beams Channels Angles T Beams Round Hollow Tubes Rectangular Hollow Section Round Bars Rectangular Bars Hexagonal Bars ●STAINLESS STEEL FOR BUILDING STRUCTURE Circular Steel Pipes Square Steel Pipes Hot-Rolled H Beams Hot-Rolled Channels Hot-Rolled Equal Leg Angles Cold-Rolled Equal Leg Angles 溶接H形鋼 溶接溝形鋼 Stainless Steel Bars For Concrete Reinforcement ●HOT-FORMED STAINLESS STEEL SECTIONS H Beams Channels Equal Leg Angles Unequal Leg Angles Round Bars Hexagonal Bars ●COLD-FORMED STAINLESS STEEL SECTIONS Channels Equal Leg Angles Unequal Leg Angles Lip Channels Hut Channels Flat Bars Round Bars Square Bars Hexagonal Bars kg is the basic unit of weight. A calculation is based on kg/m2 or kg/m. Please use it as a calculator to get a steel weight. 【 Calculation of steel’s surface area】 You can calculate a surface area of the steel, for example, to get the area of painting. Please note that “---m2 “appears when a surface area is not calculated. Please also read the app terms of use. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Verdict

The call

The clearest difference is in-app purchases: SPIDER_PLUS at none against Kouzaitap for iPad's 1. SPIDER_PLUS also leads on ads (none vs shown). Kouzaitap for iPad's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence 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. Kouzaitap for iPad sells 1 in-app purchase, starting at $1.99 per month. SPIDER_PLUS asks for nothing beyond the download.

UpkeepUpdate frequency

SPIDER_PLUS ships an update fortnightly, Kouzaitap for iPad every 2 weeks. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 3 level
SPIDER_PLUS versus Kouzaitap for iPad: the parameters behind the verdict, then further details
ParameterSPIDER_PLUSKouzaitap for iPad
PriceFreeFree
Update frequencyFortnightlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPadiPad
Requires iOS17.015.6 — better
Further details — not scored
Size133 MB26 MB
Age rating4+4+
DeveloperSpiderPlus & Co.TOGUCHI, CO., LTD.

In-app purchases

None

SPIDER_PLUS

No in-app purchases

1 purchases

Kouzaitap for iPad

Subscriptions1
  • Hide ads$1.991 Month

Questions

Is SPIDER_PLUS free?
SPIDER_PLUS is free to download, with no in-app purchases.
Is Kouzaitap for iPad free?
Kouzaitap for iPad is free to download, with in-app purchases available.
Do SPIDER_PLUS or Kouzaitap for iPad have ads?
Kouzaitap for iPad shows ads; SPIDER_PLUS does not.
Which is updated more often, SPIDER_PLUS or Kouzaitap for iPad?
SPIDER_PLUS ships an update fortnightly, and Kouzaitap for iPad every 2 weeks. Most recently, SPIDER_PLUS was updated on October 23, 2026 and Kouzaitap for iPad on October 14, 2026.

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