# FLEX SIGN Anode vs UltraReading

FLEX SIGN Anode and UltraReading are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FLEX SIGN Anode ships an update fortnightly, UltraReading every 3 weeks. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | FLEX SIGN Anode | UltraReading |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 15 MB | 28 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [德林 王](https://appshunter.io/developer/1242743184) | [Xinge Yao](https://appshunter.io/developer/1843957578) |

## What reviewers say

### FLEX SIGN Anode

[App page](https://appshunter.io/ios/app/flex-sign-anode/id1474597528)

**Features:** macOS Compatibility

**In-app purchases:** none


### UltraReading

[App page](https://appshunter.io/ios/app/ultrareading/id6773331810)

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

**In-app purchases:** none


## Frequently asked questions

### Is FLEX SIGN Anode free?

FLEX SIGN Anode is free to download, with no in-app purchases.

### Is UltraReading free?

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

### Do FLEX SIGN Anode or UltraReading have ads?

Neither FLEX SIGN Anode nor UltraReading shows ads.

### Which is updated more often, FLEX SIGN Anode or UltraReading?

FLEX SIGN Anode ships an update fortnightly, and UltraReading every 3 weeks. Most recently, FLEX SIGN Anode was updated on October 11, 2026 and UltraReading on October 12, 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.*