# Senseen Pencil vs Zenspec

The clearest difference is update cadence: Senseen Pencil at fortnightly against Zenspec's monthly. Zenspec's advantage is iOS requirement (11.0 vs 15.1). 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.

Senseen Pencil ships an update fortnightly, Zenspec monthly. The most recent releases landed on October 30, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Senseen Pencil | Zenspec |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 45 MB | 154 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Senseen](https://appshunter.io/developer/1700469508) | [VISPEK](https://appshunter.io/developer/1447793884) |

## What reviewers say

### Senseen Pencil

[App page](https://appshunter.io/ios/app/senseen-pencil/id6456484730)

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

**In-app purchases:** none


### Zenspec

[App page](https://appshunter.io/ios/app/zenspec/id6464039059)

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

**In-app purchases:** none


## Frequently asked questions

### Is Senseen Pencil free?

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

### Is Zenspec free?

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

### Do Senseen Pencil or Zenspec have ads?

Neither Senseen Pencil nor Zenspec shows ads.

### Which is updated more often, Senseen Pencil or Zenspec?

Senseen Pencil ships an update fortnightly, and Zenspec monthly. Most recently, Senseen Pencil was updated on October 30, 2026 and Zenspec on November 7, 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.*