# Used Spare Part vs RDS Compo

The clearest difference is update cadence: RDS Compo at every 5 weeks against Used Spare Part's every 6 months. 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.

Used Spare Part ships an update every 6 months, RDS Compo every 5 weeks. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Used Spare Part | RDS Compo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Size | 174 MB | 108 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mustafaa Hitham](https://appshunter.io/developer/1871414443) | [ScanHead](https://appshunter.io/developer/1883934207) |

## What reviewers say

### Used Spare Part

[App page](https://appshunter.io/ios/app/used-spare-part/id6758203245)

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

**In-app purchases:** none


### RDS Compo

[App page](https://appshunter.io/ios/app/rds-compo/id6765631654)

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

**In-app purchases:** none


## Frequently asked questions

### Is Used Spare Part free?

Used Spare Part is free to download, with no in-app purchases.

### Is RDS Compo free?

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

### Do Used Spare Part or RDS Compo have ads?

Neither Used Spare Part nor RDS Compo shows ads.

### Which is updated more often, Used Spare Part or RDS Compo?

Used Spare Part ships an update every 6 months, and RDS Compo every 5 weeks. Most recently, Used Spare Part was updated on October 25, 2026 and RDS Compo on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*