# SMELLiT vs Contestify

The clearest difference is rating: Contestify at 5.0 against SMELLiT's 4.5. Contestify also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.0). SMELLiT's advantage is ads (none vs shown) and ratings volume (61 vs 1). On price, in-app purchases and device support there is nothing between them.

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

Contestify holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: SMELLiT has 61 ratings behind it against 1, so its average is the more settled of the two.

SMELLiT ships an update every 2 months, Contestify every 3 weeks. The most recent releases landed on September 24, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | SMELLiT | Contestify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (61 ratings)](https://appshunter.io/ios/app/smellit/id6502876469/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/contestify/id6670723569/reviews)** |
| Number of ratings | **61** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 67 MB | 91 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Weizmann Institute of Science](https://appshunter.io/developer/533002684) | [Built4Balance](https://appshunter.io/developer/1755144080) |

## What reviewers say

### SMELLiT

[App page](https://appshunter.io/ios/app/smellit/id6502876469)

Participate in scientific research about the human sense of smell. Log daily scents and learn about olfaction. Earn rewards for consistent participation in this research project.

**Highlights:** Log daily scents, Learn about olfaction, Participate in research, Earn rewards, Randomized questionnaires

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

**In-app purchases:** none


### Contestify

[App page](https://appshunter.io/ios/app/contestify/id6670723569)

Create, discover, and join online contests with ease. This platform is designed for brands looking to boost engagement and individuals seeking creative challenges. It streamlines the entire contest experience.

**Highlights:** Create online contests, Discover new contests, Participate in challenges, Brand engagement tools, Simplified contest management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SMELLiT free?

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

### Is Contestify free?

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

### Which has better reviews, SMELLiT or Contestify?

Contestify is rated higher. SMELLiT averages 4.5 out of 5 from 61 ratings, while Contestify averages 5.0 from 1 ratings.

### Do SMELLiT or Contestify have ads?

Contestify shows ads; SMELLiT does not.

### Which is updated more often, SMELLiT or Contestify?

SMELLiT ships an update every 2 months, and Contestify every 3 weeks. Most recently, SMELLiT was updated on September 24, 2026 and Contestify on September 14, 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.*