# Smart Puncture vs DoctLink

The clearest difference is update cadence: DoctLink at every 3 weeks against Smart Puncture's every 9 months. Smart Puncture's advantage is iOS requirement (12.0 vs 14.0.0). On price, ads, 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.

Smart Puncture ships an update every 9 months, DoctLink every 3 weeks. The most recent releases landed on October 3, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Smart Puncture | DoctLink |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 9 MB | 65 MB |
| Requires iOS | **12.0** | 14.0.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Masaaki Hirata](https://appshunter.io/developer/942972055) | [DoctLink株式会社](https://appshunter.io/developer/1721293044) |

## What reviewers say

### Smart Puncture

[App page](https://appshunter.io/ios/app/smart-puncture/id942972056)

This app helps visualize angles and distances relative to gravity. It displays a line that rotates with your iPhone, changing background color when tilted. You can also draw circles to measure distances from the rotation center.

**Highlights:** Angle rotation with gravity reference, Background color changes with tilt, Draw circles for distance measurement, Visualize lines with rotation

**Features:** macOS Compatibility

**In-app purchases:** none


### DoctLink

[App page](https://appshunter.io/ios/app/doctlink/id6474283637)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Puncture free?

Smart Puncture is free to download, with no in-app purchases.

### Is DoctLink free?

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

### Do Smart Puncture or DoctLink have ads?

Neither Smart Puncture nor DoctLink shows ads.

### Which is updated more often, Smart Puncture or DoctLink?

Smart Puncture ships an update every 9 months, and DoctLink every 3 weeks. Most recently, Smart Puncture was updated on October 3, 2026 and DoctLink on October 21, 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.*