# Scanner vs RingMeter

The clearest difference is in-app purchases: Scanner at none against RingMeter's 4. Scanner also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). RingMeter's advantage is ads (none vs shown) and update cadence (every 10 days vs every 116 months). On price there is nothing between them.

Both are free to download. RingMeter sells 4 in-app purchases, starting at $1.99 per 7 days. Scanner asks for nothing beyond the download.

Scanner ships an update every 116 months, RingMeter every 10 days. The most recent releases landed on September 26, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Scanner | RingMeter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 116 months | **Every 10 days** |
| Size | 20 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [Aishvarya Sadasivam](https://appshunter.io/developer/1062048241) | [ZHENGQIAO JIANG](https://appshunter.io/developer/1892168889) |

## What reviewers say

### Scanner

[App page](https://appshunter.io/ios/app/scanner-documents-pdf/id1080211114)

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

**In-app purchases:** none


### RingMeter

[App page](https://appshunter.io/ios/app/ringmeter-ring-size-finder/id6767339352)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Scanner free?

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

### Is RingMeter free?

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

### Do Scanner or RingMeter have ads?

Scanner shows ads; RingMeter does not.

### Which is updated more often, Scanner or RingMeter?

Scanner ships an update every 116 months, and RingMeter every 10 days. Most recently, Scanner was updated on September 26, 2026 and RingMeter on September 11, 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.*