# Straightness vs # Simple Graph

The clearest difference is in-app purchases: Straightness at none against # Simple Graph's 2. Straightness also leads on iOS requirement (12.0 vs 15.6). # Simple Graph's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. # Simple Graph sells 2 in-app purchases, starting at $2.99 per month. Straightness asks for nothing beyond the download.

Straightness ships an update every 2 months, # Simple Graph every 9 days. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Straightness | # Simple Graph |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 59 MB | 50 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [YUKI TANAIKE](https://appshunter.io/developer/478558546) |

## What reviewers say

### Straightness

[App page](https://appshunter.io/ios/app/straightness/id6759055500)

**Features:** macOS Compatibility

**In-app purchases:** none


### # Simple Graph

[App page](https://appshunter.io/ios/app/simple-graph/id6761530584)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Graph Pro (Monthly) | $2.99 | per month |
| Graph Pro (Annual) | $27.00 | per year |


## Frequently asked questions

### Is Straightness free?

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

### Is # Simple Graph free?

# Simple Graph is free to download, with in-app purchases available.

### Do Straightness or # Simple Graph have ads?

Neither Straightness nor # Simple Graph shows ads.

### Which is updated more often, Straightness or # Simple Graph?

Straightness ships an update every 2 months, and # Simple Graph every 9 days. Most recently, Straightness was updated on October 10, 2026 and # Simple Graph on October 4, 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.*