# CellVkey vs ±0正負零

The clearest difference is update cadence: ±0正負零 at every 9 days against CellVkey's every 4 weeks. ±0正負零 also leads on iOS requirement (13.0 vs 15.4). 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.

CellVkey ships an update every 4 weeks, ±0正負零 every 9 days. The most recent releases landed on October 10, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | CellVkey | ±0正負零 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Size | 18 MB | 75 MB |
| Requires iOS | 15.4 | **13.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NESTECH CORPORATION, LTD.](https://appshunter.io/developer/438677844) | [冠源 余](https://appshunter.io/developer/1100084170) |

## What reviewers say

### CellVkey

[App page](https://appshunter.io/ios/app/cellvkey/id1437756843)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### ±0正負零

[App page](https://appshunter.io/ios/app/0/id6739824373)

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

**In-app purchases:** none


## Frequently asked questions

### Is CellVkey free?

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

### Is ±0正負零 free?

±0正負零 is free to download, with no in-app purchases.

### Do CellVkey or ±0正負零 have ads?

Neither CellVkey nor ±0正負零 shows ads.

### Which is updated more often, CellVkey or ±0正負零?

CellVkey ships an update every 4 weeks, and ±0正負零 every 9 days. Most recently, CellVkey was updated on October 10, 2026 and ±0正負零 on September 28, 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.*