# KD Serials vs Gridphase

The clearest difference is update cadence: KD Serials at every 4 weeks against Gridphase's every 3 months. KD Serials also leads on iOS requirement (9.0 vs 12.0). 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.

KD Serials ships an update every 4 weeks, Gridphase every 3 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | KD Serials | Gridphase |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 3 months |
| Size | 39 MB | 57 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Junce Instruments Co., Ltd.](https://appshunter.io/developer/1535583983) | [GRID INSTRUMENTS d.o.o.](https://appshunter.io/developer/1711794018) |

## What reviewers say

### KD Serials

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Gridphase

[App page](https://appshunter.io/ios/app/gridphase/id6469338974)

**In-app purchases:** none


## Frequently asked questions

### Is KD Serials free?

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

### Is Gridphase free?

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

### Do KD Serials or Gridphase have ads?

Neither KD Serials nor Gridphase shows ads.

### Which is updated more often, KD Serials or Gridphase?

KD Serials ships an update every 4 weeks, and Gridphase every 3 months. Most recently, KD Serials was updated on October 1, 2026 and Gridphase on September 30, 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.*