# Threadline vs Arithmedash

The clearest difference is in-app purchases: Arithmedash at none against Threadline's 10. Arithmedash also leads on update cadence (every 2 days vs fortnightly). Threadline's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Threadline sells 10 one-off in-app purchases. Arithmedash asks for nothing beyond the download.

Threadline ships an update fortnightly, Arithmedash every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Threadline | Arithmedash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 55 MB | 79 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joel King](https://appshunter.io/developer/1875494842) | [Amersham Websites Limited](https://appshunter.io/developer/1459228623) |

## What reviewers say

### Threadline

[App page](https://appshunter.io/ios/app/threadline-flow-puzzle/id6758916144)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Easy Pack | $0.99 | one-time |
| 10 Hints | $0.99 | one-time |
| Medium Pack | $1.99 | one-time |
| 5 Skip Tokens | $1.99 | one-time |
| Hard Pack | $2.99 | one-time |
| Expert Pack | $4.99 | one-time |
| Master Pack | $7.99 | one-time |
| Legendary Pack | $19.99 | one-time |
| Mythic Pack | $19.99 | one-time |
| Godlike Pack | $24.99 | one-time |


### Arithmedash

[App page](https://appshunter.io/ios/app/arithmedash/id6759264100)

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

**In-app purchases:** none


## Frequently asked questions

### Is Threadline free?

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

### Is Arithmedash free?

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

### Do Threadline or Arithmedash have ads?

Neither Threadline nor Arithmedash shows ads.

### Which is updated more often, Threadline or Arithmedash?

Threadline ships an update fortnightly, and Arithmedash every 2 days. Most recently, Threadline was updated on October 25, 2026 and Arithmedash on October 25, 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.*