# Electronic seal[PRO] vs TriangleS

The clearest difference is price: TriangleS at $0.99 against Electronic seal[PRO]'s $14.99. Electronic seal[PRO]'s advantage is update cadence (every 6 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Electronic seal[PRO] costs $14.99 and TriangleS $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electronic seal[PRO] ships an update every 6 weeks, TriangleS every 4 months. The most recent releases landed on October 2, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Electronic seal[PRO] | TriangleS |
| --- | --- | --- |
| Price | $14.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 79 MB | 2 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kazuya Fujita](https://appshunter.io/developer/1358322690) | [ryo sasaki](https://appshunter.io/developer/318552526) |

## What reviewers say

### Electronic seal[PRO]

[App page](https://appshunter.io/ios/app/electronic-sealpro/id1448877613)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TriangleS

[App page](https://appshunter.io/ios/app/triangles/id1572386611)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electronic seal[PRO] free?

Electronic seal[PRO] costs $14.99, with no in-app purchases.

### Is TriangleS free?

TriangleS costs $0.99, with no in-app purchases.

### Do Electronic seal[PRO] or TriangleS have ads?

Neither Electronic seal[PRO] nor TriangleS shows ads.

### Which is updated more often, Electronic seal[PRO] or TriangleS?

Electronic seal[PRO] ships an update every 6 weeks, and TriangleS every 4 months. Most recently, Electronic seal[PRO] was updated on October 2, 2026 and TriangleS on September 8, 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.*