# CellLog vs RayStatus | Phone Diagnostics

The clearest difference is ads: CellLog at none against RayStatus | Phone Diagnostics's shown. CellLog also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. CellLog sells 1 one-off in-app purchase and RayStatus | Phone Diagnostics sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

CellLog ships an update every 2 weeks, RayStatus | Phone Diagnostics every 2 months. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CellLog | RayStatus | Phone Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 2 MB | 18 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshifumi Sato](https://appshunter.io/developer/6780413827) | [RUEI HUNG SHIU](https://appshunter.io/developer/6791387950) |

## What reviewers say

### CellLog

[App page](https://appshunter.io/ios/app/celllog-lipo-battery-tracker/id6793566288)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CellLog Pro | $5.99 | one-time |


### RayStatus | Phone Diagnostics

[App page](https://appshunter.io/ios/app/raystatus-phone-diagnostics/id6799954244)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RayStatus Pro Monthly | $1.99 | per month |
| RayStatus Pro Yearly | $12.99 | per year |


## Frequently asked questions

### Is CellLog free?

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

### Is RayStatus | Phone Diagnostics free?

RayStatus | Phone Diagnostics is free to download, with in-app purchases available.

### Do CellLog or RayStatus | Phone Diagnostics have ads?

RayStatus | Phone Diagnostics shows ads; CellLog does not.

### Which is updated more often, CellLog or RayStatus | Phone Diagnostics?

CellLog ships an update every 2 weeks, and RayStatus | Phone Diagnostics every 2 months. Most recently, CellLog was updated on November 6, 2026 and RayStatus | Phone Diagnostics on October 25, 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.*