# SMELLiT — What do humans smell?

> Research app for logging daily scents and learning about olfaction. (iPhone/iPad app by Weizmann Institute of Science.)

- Source: https://appshunter.io/ios/app/smellit/id6502876469 (this page in markdown: same URL + `.md`)
- Developer: [Weizmann Institute of Science](https://appshunter.io/developer/533002684)
- Category: Lifestyle
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.6 · 56 MB
- Languages: English
- Released: 2025-01-26
- Data updated: 2026-07-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/smellit/id6502876469/reviews.md

## What is SMELLiT?

As part of the d2smell project, we want to find out what people smell every day. Learn about olfaction and see what others have smelled. Get paid for participating in research into the sense of smell. 4 times a day, at random times, the app will ask you to fill out a questionnaire on what you smell. Get a bonus for completing 40 surveys over 10 days.

## Key features

- Log daily scents
- Learn about olfaction
- Participate in research
- Earn rewards
- Randomized questionnaires

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/smellit/id6502876469/reviews.md

### 1/5 — Can’t sign up!

*2026-02-20, version 5.3.3*

Can’t sign up at all…Why is it happening

### 1/5 — Not counting done questionnaires

*2026-01-24, version 5.3.3*

It has never counted a questionnaire I did, even after doing it several times

### 1/5 — 🤬🤬🤬🤬🤬🤬

*2025-04-13, version 2.0.0*

THIS APP IS NOT WORTH IT WHY BECAUSE  EVERY TIME YOU GDT A NOTIFICATION FOR A SURVEY YOU GET KICKED OUT AND YOU HAVE TO LOGIN IN WITH YOUR PHONE NUMBER AND VERIFY YOUR NUMBER TO LOGIN IN!!!!!!!  IS THIS GOING TO BE EVERY-TIME I ANSWER A NOTIFICATION???? FOR THIS I HAD TO CANCEL THE EXPERIMENT AND MY ACCOUNT

## Frequently asked questions about SMELLiT

### How does SMELLiT work?

SMELLiT prompts you to fill out questionnaires about what you smell at random times throughout the day. This data contributes to research on olfaction.

### Can I earn money with SMELLiT?

Yes, you can get paid for participating in research. Completing 40 surveys over 10 days earns you a bonus.

### What is the age rating for SMELLiT?

SMELLiT has an age rating of 4+, making it suitable for a wide range of users.

### What devices support SMELLiT?

SMELLiT is available on iPhone, iPad, and iPod devices.

### How often is SMELLiT updated?

The latest version is 5.3.3, and it was last updated on August 26, 2025, indicating active development.

### What is the user sentiment for SMELLiT?

Currently, SMELLiT has a rating of 1.0 stars from 1 rating, suggesting very limited user feedback available.

### Does SMELLiT have ads?

No, SMELLiT does not contain advertisements.

### Is SMELLiT free to download?

Yes, SMELLiT is available for free download.

## Version history (last 4 releases)

### 5.3.3 — 2025-08-26

Imporved fraud security, changes in the experimental design and bug fixes for smoother user experience.

### 3.0.0 — 2025-05-01

New camera features!
Option to contribute to science
Bug fixes

### 2.0.0 — 2025-02-18

Added German and made photographing easier

### 1.0.0 — 2025-01-26

No release notes.

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## More apps by Weizmann Institute of Science

- [WeizmannNet](https://appshunter.io/ios/app/weizmannnet/id935248478)
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- [meet@WIS](https://appshunter.io/ios/app/meetwis/id1048437397)
- [Personalized Nutrition Project](https://appshunter.io/ios/app/personalized-nutrition-project/id1290081421)
- [Weizmann](https://appshunter.io/ios/app/weizmann/id1440468638)
- [פרויקט 10K](https://appshunter.io/ios/app/10k/id1462573523)

All apps by Weizmann Institute of Science: https://appshunter.io/developer/533002684

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-20.*