# PRO type vs KD Serials

The clearest difference is in-app purchases: KD Serials at none against PRO type's 5. KD Serials also leads on update cadence (every 4 weeks vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PRO type sells 5 one-off in-app purchases. KD Serials asks for nothing beyond the download.

PRO type ships an update every 9 months, KD Serials every 4 weeks. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | PRO type | KD Serials |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 weeks** |
| Size | 4 MB | 39 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DILTS JAPAN, LIMITED LIABILITY CO.](https://appshunter.io/developer/780416956) | [Hangzhou Junce Instruments Co., Ltd.](https://appshunter.io/developer/1535583983) |

## What reviewers say

### PRO type

[App page](https://appshunter.io/ios/app/pro-type-v-fireplus/id1328424681)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GROM JC75 | $3.99 | one-time |
| CYGNUS-X SED8J | $3.99 | one-time |
| CYGNUS-X SEA5J | $3.99 | one-time |
| GROM JC61 | $3.99 | one-time |
| GSX-R125 DL33B/S125 DL32B | $3.99 | one-time |


### KD Serials

[App page](https://appshunter.io/ios/app/kd-serials/id1576490437)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PRO type free?

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

### Is KD Serials free?

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

### Do PRO type or KD Serials have ads?

Neither PRO type nor KD Serials shows ads.

### Which is updated more often, PRO type or KD Serials?

PRO type ships an update every 9 months, and KD Serials every 4 weeks. Most recently, PRO type was updated on September 30, 2026 and KD Serials on October 1, 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.*