# Haihaisoft Reader vs Tierzero Voice

The clearest difference is rating: Tierzero Voice at 3.0 against Haihaisoft Reader's 1.2. Haihaisoft Reader's advantage is update cadence (every 5 months vs every 12 months) and iOS requirement (6.1 vs 14.0). On price, review sentiment, ratings volume and ads there is nothing between them.

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

Tierzero Voice holds the better App Store score, 3.0 against 1.2. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Haihaisoft Reader ships an update every 5 months, Tierzero Voice every 12 months. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Haihaisoft Reader | Tierzero Voice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (5 ratings)](https://appshunter.io/ios/app/haihaisoft-reader/id437433430/reviews) | **[3.0 (7 ratings)](https://appshunter.io/ios/app/tierzero-voice/id1253650880/reviews)** |
| Number of ratings | 5 | **7** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 21 MB | 106 MB |
| Requires iOS | **6.1** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [海波 师](https://appshunter.io/developer/437433433) | [Tierzero](https://appshunter.io/developer/890617304) |

## What reviewers say

### Haihaisoft Reader

[App page](https://appshunter.io/ios/app/haihaisoft-reader/id437433430)

A free PDF reader for iOS devices that offers fast launch speeds. It can also open PDF documents protected by DRM-X 3.0. Requires iOS 6 or later.

**Highlights:** Free PDF document reader, Fast launch speed, DRM-X 3.0 protected PDF support, iOS compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Tierzero Voice

[App page](https://appshunter.io/ios/app/tierzero-voice/id1253650880)

This app provides a unified communications solution, extending business phone features to mobile devices. It allows users to maintain a consistent identity across devices, manage calls, contacts, and voicemail from a single interface.

**Highlights:** Unified Communications solution, Maintain same identity across devices, Seamless call transition, Contact management, Voicemail access, Call history, Answering rules and presence management

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


## Frequently asked questions

### Is Haihaisoft Reader free?

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

### Is Tierzero Voice free?

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

### Which has better reviews, Haihaisoft Reader or Tierzero Voice?

Tierzero Voice is rated higher. Haihaisoft Reader averages 1.2 out of 5 from 5 ratings, while Tierzero Voice averages 3.0 from 7 ratings.

### Do Haihaisoft Reader or Tierzero Voice have ads?

Neither Haihaisoft Reader nor Tierzero Voice shows ads.

### Which is updated more often, Haihaisoft Reader or Tierzero Voice?

Haihaisoft Reader ships an update every 5 months, and Tierzero Voice every 12 months. Most recently, Haihaisoft Reader was updated on October 8, 2026 and Tierzero Voice on October 3, 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.*