# Axis轴线 vs Vellum

The clearest difference is update cadence: Vellum at weekly against Axis轴线's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Axis轴线 sells 3 in-app purchases, starting at $2.99 per month and Vellum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Axis轴线 ships an update every 5 months, Vellum weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Axis轴线 | Vellum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/axis/id6767885284/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Freemium | — |
| Size | 4 MB | 44 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [德鑫 徐](https://appshunter.io/developer/1801107545) | [四扬 叶](https://appshunter.io/developer/6797699915) |

## What reviewers say

### Axis轴线

[App page](https://appshunter.io/ios/app/axis/id6767885284)

This system helps you align your personal strategy with your execution by visualizing the gap between your plans and actual progress. It offers layered views from simple timelines to strategic Gantt charts, with automated analysis of your deviation patterns. Features include a focus mode and cross-device synchronization.

**Highlights:** Mirror Timeline for plan vs. actual comparison, KPI Waterfall for target achievement visualization, Strategy Gantt charts for long-term trends, Automated deviation pattern analysis, Zen Mode for focused work sessions, Widgets and Dynamic Island integration, iCloud cross-device sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Axis Pro Monthly | $2.99 | per month |
| Axis Pro Yearly | $9.99 | per year |
| Axis Pro Lifetime | $19.99 | one-time |


### Vellum

[App page](https://appshunter.io/ios/app/vellum-topic-notes-and-ideas/id6799964763)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vellum pro lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Axis轴线 free?

Axis轴线 is free to download, with in-app purchases available.

### Is Vellum free?

Vellum is free to download, with in-app purchases available.

### Do Axis轴线 or Vellum have ads?

Neither Axis轴线 nor Vellum shows ads.

### Which is updated more often, Axis轴线 or Vellum?

Axis轴线 ships an update every 5 months, and Vellum weekly. Most recently, Axis轴线 was updated on October 31, 2026 and Vellum on October 31, 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.*