# Underdog Curve vs Linq zero

Underdog Curve and Linq zero 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.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Underdog Curve | Linq zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/linq-zero/id6749238366/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free |
| Size | 38 MB | 38 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Underdog Curve, LLC](https://appshunter.io/developer/1788224059) | [Linq, LLC](https://appshunter.io/developer/1492946254) |

## What reviewers say

### Underdog Curve

[App page](https://appshunter.io/ios/app/underdog-curve/id6740060972)

**In-app purchases:** none


### Linq zero

[App page](https://appshunter.io/ios/app/linq-zero/id6749238366)

Manage professional contacts, communicate with clients via messaging and calls, and monitor team conversations. This native iOS app offers a clean interface with features like real-time messaging, VoIP calling, and team inbox functionality.

**Highlights:** Contact management, Real-time messaging, VoIP calling, Team inbox, Native iOS interface, Dark mode support

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

**In-app purchases:** none


## Frequently asked questions

### Is Underdog Curve free?

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

### Is Linq zero free?

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

### Do Underdog Curve or Linq zero have ads?

Neither Underdog Curve nor Linq zero shows ads.

### Which is updated more often, Underdog Curve or Linq zero?

Underdog Curve ships an update fortnightly, and Linq zero fortnightly. Most recently, Underdog Curve was updated on October 28, 2026 and Linq zero on October 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.*