# ADI Study Watch vs iSelfie

The clearest difference is in-app purchases: ADI Study Watch at none against iSelfie's 2. ADI Study Watch also leads on ads (none vs shown) and iOS requirement (12.1 vs 15.1). iSelfie's advantage is update cadence (weekly vs every 5 months). On price and device support there is nothing between them.

Both are free to download. iSelfie sells 2 in-app purchases, starting at $19.99 per month. ADI Study Watch asks for nothing beyond the download.

ADI Study Watch ships an update every 5 months, iSelfie weekly. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | ADI Study Watch | iSelfie |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Weekly** |
| Size | 42 MB | 250 MB |
| Requires iOS | **12.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Analog Devices](https://appshunter.io/developer/1118863812) | [AiZtech Ltd](https://appshunter.io/developer/1260588421) |

## What reviewers say

### ADI Study Watch

[App page](https://appshunter.io/ios/app/adi-study-watch/id1572289603)

**Features:** macOS Compatibility

**In-app purchases:** none


### iSelfie

[App page](https://appshunter.io/ios/app/iselfie/id6775516948)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Heart Health Monthly | $19.99 | per month |
| Heart Health Annual | $179.99 | per year |


## Frequently asked questions

### Is ADI Study Watch free?

ADI Study Watch is free to download, with no in-app purchases.

### Is iSelfie free?

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

### Do ADI Study Watch or iSelfie have ads?

iSelfie shows ads; ADI Study Watch does not.

### Which is updated more often, ADI Study Watch or iSelfie?

ADI Study Watch ships an update every 5 months, and iSelfie weekly. Most recently, ADI Study Watch was updated on October 10, 2026 and iSelfie on October 20, 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.*