# SPIDERPLUS for iPhone vs CalcTri V1

The clearest difference is ads: SPIDERPLUS for iPhone at none against CalcTri V1's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SPIDERPLUS for iPhone | CalcTri V1 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | — | Ad-supported |
| Size | 54 MB | 41 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SpiderPlus & Co.](https://appshunter.io/developer/452916604) | [TOGUCHI, CO., LTD.](https://appshunter.io/developer/668415384) |

## What reviewers say

### SPIDERPLUS for iPhone

[App page](https://appshunter.io/ios/app/spiderplus-for-iphone/id479875792)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalcTri V1

[App page](https://appshunter.io/ios/app/calctri-v1/id1606476734)

This utility app offers a calculator, right triangle calculations, and pipe centering. It mimics desktop calculator operation and allows copying from history. Supports angle input in degrees and minutes for precise calculations.

**Highlights:** Basic calculator function, Right triangle calculations, Pipe centering calculations, Angle input in degrees and minutes, Copy calculation history

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SPIDERPLUS for iPhone free?

SPIDERPLUS for iPhone is free to download, with no in-app purchases.

### Is CalcTri V1 free?

CalcTri V1 is free to download, with no in-app purchases.

### Do SPIDERPLUS for iPhone or CalcTri V1 have ads?

CalcTri V1 shows ads; SPIDERPLUS for iPhone does not.

### Which is updated more often, SPIDERPLUS for iPhone or CalcTri V1?

SPIDERPLUS for iPhone ships an update every 5 weeks, and CalcTri V1 every 5 weeks. Most recently, SPIDERPLUS for iPhone was updated on September 20, 2026 and CalcTri V1 on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*