# Howtosmile vs UALCAN Mobile

The clearest difference is update cadence: UALCAN Mobile at every 8 days against Howtosmile's every 21 months. Howtosmile's advantage is iOS requirement (7.0 vs 13.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Howtosmile against 5.0 for UALCAN Mobile. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Howtosmile ships an update every 21 months, UALCAN Mobile every 8 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Howtosmile | UALCAN Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/howtosmile/id462994547/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/ualcan-mobile/id6450547634/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 8 days** |
| Monetization | Free | Free |
| Size | 1 MB | 20 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Lawrence Hall of Science](https://appshunter.io/developer/462994550) | [The University of Alabama at Birmingham](https://appshunter.io/developer/486475976) |

## What reviewers say

### Howtosmile

[App page](https://appshunter.io/ios/app/howtosmile/id462994547)

Discover and perform fun, hands-on STEM activities for all ages. Explore a vast collection of experiments, games, and projects created by leading science centers. Search by keyword, topic, cost, or age to find your next engaging learning experience.

**Highlights:** Hands-on STEM activities, Searchable activity collection, Filter by topic, cost, and age, Created by science centers, Blog with fresh ideas, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### UALCAN Mobile

[App page](https://appshunter.io/ios/app/ualcan-mobile/id6450547634)

Access comprehensive gene expression, methylation, and proteomics data on the go. Search and analyze profiles based on clinico-pathologic factors directly from your mobile device. Visualize results with interactive plots and download statistical tables.

**Highlights:** Search gene expression, methylation, and proteomics profiles, Analyze data based on clinico-pathologic factors, Interactive gene analysis box-plots, Statistical significance tables, PDF download of results, Access UALCAN publication links

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Howtosmile free?

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

### Is UALCAN Mobile free?

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

### Which has better reviews, Howtosmile or UALCAN Mobile?

Howtosmile and UALCAN Mobile are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Howtosmile or UALCAN Mobile have ads?

Neither Howtosmile nor UALCAN Mobile shows ads.

### Which is updated more often, Howtosmile or UALCAN Mobile?

Howtosmile ships an update every 21 months, and UALCAN Mobile every 8 days. Most recently, Howtosmile was updated on November 1, 2026 and UALCAN Mobile on November 3, 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.*