# One Sub vs DSP

The clearest difference is update cadence: One Sub at every 6 months against DSP's every 15 months. One Sub also leads on iOS requirement (8.0 vs 15.6). 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.

One Sub ships an update every 6 months, DSP every 15 months. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | One Sub | DSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 15 months |
| Size | 8 MB | 2 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Guangzhou Fenlang Electronic Technology Co., Ltd.;](https://appshunter.io/developer/1125294061) | [东山 谢](https://appshunter.io/developer/1634156531) |

## What reviewers say

### One Sub

[App page](https://appshunter.io/ios/app/one-sub/id1125294062)

**Features:** macOS Compatibility

**In-app purchases:** none


### DSP

[App page](https://appshunter.io/ios/app/dsp-4680-pro/id6479560759)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Sub free?

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

### Is DSP free?

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

### Do One Sub or DSP have ads?

Neither One Sub nor DSP shows ads.

### Which is updated more often, One Sub or DSP?

One Sub ships an update every 6 months, and DSP every 15 months. Most recently, One Sub was updated on September 16, 2026 and DSP on September 9, 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.*