# NOSA Smell Training vs Telldus

The clearest difference is in-app purchases: NOSA Smell Training at none against Telldus's 5. NOSA Smell Training also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Telldus sells 5 in-app purchases, starting at $2.99 per month. NOSA Smell Training asks for nothing beyond the download.

NOSA Smell Training ships an update fortnightly, Telldus every 9 days. The most recent releases landed on October 11, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | NOSA Smell Training | Telldus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Free | — |
| Size | 223 MB | 90 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [NoseOption AB](https://appshunter.io/developer/1711161591) | [Telldus Technologies AB](https://appshunter.io/developer/395971358) |

## What reviewers say

### NOSA Smell Training

[App page](https://appshunter.io/ios/app/nosa-smell-training/id6468983747)

This app helps users track their smell training sessions with scheduling, reminders, and visual aids. It allows for personal feedback on smell perception and quality of life improvements. Designed for well-being and lifestyle, it is not a substitute for professional medical advice.

**Highlights:** Scheduled training sessions, Customizable reminders, Visual aids for engagement, Subjective feedback logging, Progress tracking over time

**In-app purchases:** none


### Telldus

[App page](https://appshunter.io/ios/app/telldus/id6758139033)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Telldus 1 Month Premium | $2.99 | per month |
| Telldus 6 Months Premium | $14.99 | per 6 months |
| Telldus 12 Months Premium | $22.99 | per year |
| Telldus SMS-Package-50 | $4.99 | one-time |
| Telldus SMS | $7.99 | one-time |


## Frequently asked questions

### Is NOSA Smell Training free?

NOSA Smell Training is free to download, with no in-app purchases.

### Is Telldus free?

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

### Do NOSA Smell Training or Telldus have ads?

Neither NOSA Smell Training nor Telldus shows ads.

### Which is updated more often, NOSA Smell Training or Telldus?

NOSA Smell Training ships an update fortnightly, and Telldus every 9 days. Most recently, NOSA Smell Training was updated on October 11, 2026 and Telldus on October 23, 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.*