# iDoctor vs TriZen HD Gold

The clearest difference is review sentiment: TriZen HD Gold at 99% against iDoctor's 22%. TriZen HD Gold also leads on update cadence (every 2 months vs every 105 months) and ratings volume (84 vs 1). iDoctor's advantage is rating (5.0 vs 4.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. iDoctor sells 1 one-off in-app purchase and TriZen HD Gold sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

iDoctor holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: TriZen HD Gold has 84 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 22% of iDoctor's written reviews are positive against 99% of TriZen HD Gold's, so the app with the better star average is not the one people write more warmly about.

iDoctor ships an update every 105 months, TriZen HD Gold every 2 months. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | iDoctor | TriZen HD Gold |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/idoctor/id301467862/reviews)** | [4.6 (84 ratings)](https://appshunter.io/ios/app/trizen-hd-gold/id465342794/reviews) |
| Number of ratings | 1 | **84** |
| Positive reviews | 22.2% of reviews | **98.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 105 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 37 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alteru Inc.](https://appshunter.io/developer/434747758) | [Little White Bear Studios, LLC](https://appshunter.io/developer/286331903) |

## What reviewers say

### iDoctor

[App page](https://appshunter.io/ios/app/idoctor/id301467862)

A classic puzzle game where players eliminate viruses by matching colored pills and viruses. Create lines of four or more to clear them, but be strategic when viruses appear in groups. Offers 20 challenging levels with intuitive controls.

**Highlights:** Virus elimination gameplay, Color matching mechanics, Row and column clearing, Strategic pill placement, 20 challenging levels, Intuitive arrow and rotation controls

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iDoctor Ads Free | $0.99 | one-time |


### TriZen HD Gold

[App page](https://appshunter.io/ios/app/trizen-hd-gold/id465342794)

Engage in a relaxing and challenging puzzle game where you fit geometric pieces into a shaded area. With over 500 puzzles, this app offers a long-lasting mental escape. It's a free, ad-supported version of a paid game, including all its puzzles.

**Highlights:** Over 500 puzzles, Tangram-style gameplay, Piece fitting challenges, Puzzle completion recognition, Free access to all puzzles

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Hints | $3.99 | one-time |
| 1,000 Hints | $9.99 | one-time |
| Unlimited Hints | $19.99 | one-time |

**What reviewers like**

- 🧩 Challenging and engaging puzzle gameplay
- 🎵 Relaxing background music and zen atmosphere
- 🎨 Colorful and attractive visual design
- 🧠 Excellent for spatial reasoning and mental exercise
- 💰 Generous free content with 500 free hints

**What reviewers complain about**

- ⚠️ Inappropriate ad content (pornographic advertisement)
- 💸 Limited free hints requiring paid purchases
- 🎮 Piece rotation controls could be more intuitive
- 🎵 Repetitive background music

**Reported bugs**

- Inappropriate adult content in advertisements

**Requested features**

- Sequel or extension (Tan Zen #2)
- More varied music tracks and tones
- Easier piece rotation mechanism


## Frequently asked questions

### Is iDoctor free?

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

### Is TriZen HD Gold free?

TriZen HD Gold is free to download, with in-app purchases available.

### Which has better reviews, iDoctor or TriZen HD Gold?

iDoctor is rated higher. iDoctor averages 5.0 out of 5 from 1 ratings, while TriZen HD Gold averages 4.6 from 84 ratings.

### Do iDoctor or TriZen HD Gold have ads?

Neither iDoctor nor TriZen HD Gold shows ads.

### Which is updated more often, iDoctor or TriZen HD Gold?

iDoctor ships an update every 105 months, and TriZen HD Gold every 2 months. Most recently, iDoctor was updated on October 31, 2026 and TriZen HD Gold on November 1, 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.*