# SiD vs Vopinion

The clearest difference is review sentiment: Vopinion at 100% against SiD's 0%. Vopinion also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 months). SiD's advantage is device support (3 vs 1). On price, in-app purchases, monetization model and iOS requirement there is nothing between them.

Both are free to download. SiD sells 3 in-app purchases, starting at $0.99 per 7 days and Vopinion sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SiD ships an update every 3 months, Vopinion every 3 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SiD | Vopinion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/sid-social-interaction-diary/id6468776751/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 60 MB | 65 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Bilge Acilikaya](https://appshunter.io/developer/959377817) | [Polytherium OG](https://appshunter.io/developer/1765996137) |

## What reviewers say

### SiD

[App page](https://appshunter.io/ios/app/sid-social-interaction-diary/id6468776751)

Track and analyze how social interactions impact your mood. Log emotions, record interaction details, and gain insights into your emotional health and relationships with this user-friendly mood tracker.

**Highlights:** Emotion journal for logging feelings after interactions, Mood tracker with emoji scale (1-5), Detailed interaction records (date, time, specifics), Mood analytics and trend identification, Relationship management with custom tags, Attach photos and voice notes to entries

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $0.99 | per 7 days |
| Monthly subscription | $2.99 | per month |
| Annual subscription | $19.99 | per year |


### Vopinion

[App page](https://appshunter.io/ios/app/vopinion/id6738315136)

Create and participate in engaging text and visual polls. Discover community opinions, join daily debates, and track your poll's performance with real-time analytics. Share your voice and connect with others.

**Highlights:** Create text and visual polls, Vote and view live results, Participate in daily topics, Track poll performance with analytics, Favorite polls for later, Engage in community discussions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extended statistics for polls | $1.99 | one-time |


## Frequently asked questions

### Is SiD free?

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

### Is Vopinion free?

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

### Do SiD or Vopinion have ads?

SiD shows ads; Vopinion does not.

### Which is updated more often, SiD or Vopinion?

SiD ships an update every 3 months, and Vopinion every 3 days. Most recently, SiD was updated on October 24, 2026 and Vopinion on October 16, 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.*