# STL Viewer vs Chart Maker Bar Line Pie Graph

The clearest difference is price: STL Viewer at Free against Chart Maker Bar Line Pie Graph's $1.99. Chart Maker Bar Line Pie Graph's advantage is update cadence (weekly vs every 43 months) and iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

STL Viewer is free to download; Chart Maker Bar Line Pie Graph costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

STL Viewer ships an update every 43 months, Chart Maker Bar Line Pie Graph weekly. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | STL Viewer | Chart Maker Bar Line Pie Graph |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Weekly** |
| Size | 4 MB | 24 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Marques de Barros](https://appshunter.io/developer/1459294806) | [Xiamen City Fanyou Network Technology Co., Ltd.](https://appshunter.io/developer/1842524161) |

## What reviewers say

### STL Viewer

[App page](https://appshunter.io/ios/app/stl-viewer/id6445801487)

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

**In-app purchases:** none


### Chart Maker Bar Line Pie Graph

[App page](https://appshunter.io/ios/app/chart-maker-bar-line-pie-graph/id6786560987)

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

**In-app purchases:** none


## Frequently asked questions

### Is STL Viewer free?

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

### Is Chart Maker Bar Line Pie Graph free?

Chart Maker Bar Line Pie Graph costs $1.99, with no in-app purchases.

### Do STL Viewer or Chart Maker Bar Line Pie Graph have ads?

Neither STL Viewer nor Chart Maker Bar Line Pie Graph shows ads.

### Which is updated more often, STL Viewer or Chart Maker Bar Line Pie Graph?

STL Viewer ships an update every 43 months, and Chart Maker Bar Line Pie Graph weekly. Most recently, STL Viewer was updated on October 8, 2026 and Chart Maker Bar Line Pie Graph on October 12, 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.*