# Sumtech IoT vs WHIF

The clearest difference is in-app purchases: Sumtech IoT at none against WHIF's 10. Sumtech IoT also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. WHIF sells 10 in-app purchases, starting at $11.99 per month. Sumtech IoT asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Sumtech IoT | WHIF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (44 ratings)](https://appshunter.io/ios/app/whif-romance-ai-chat/id6753713932/reviews)** |
| Number of ratings | — | **44** |
| Positive reviews | — | 90.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 61 MB | 86 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [PATIKHOM KONKENG](https://appshunter.io/developer/848551905) | [bunkerkids](https://appshunter.io/developer/1548254320) |

## What reviewers say

### Sumtech IoT

[App page](https://appshunter.io/ios/app/sumtech-iot/id6749680565)

**Features:** macOS Compatibility

**In-app purchases:** none


### WHIF

[App page](https://appshunter.io/ios/app/whif-romance-ai-chat/id6753713932)

Engage in immersive stories and develop lifelike relationships with AI characters. Discover a wide range of personalities and genres, from romance to drama. Create your own characters and even earn from them.

**Highlights:** AI character chat, Immersive storytelling, Lifelike relationship simulation, DM Mode for quick chats, Couple Room with favorite character, Character creation and earning, Web novel-style writing

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Key (Monthly) | $11.99 | per month |
| 1,520 WHIF | $2.09 | one-time |
| 3,920 WHIF | $5.09 | one-time |
| 8,316 WHIF | $6.99 | one-time |
| 8,316 WHIF | $10.49 | one-time |
| 17,034 WHIF | $15.99 | one-time |
| 17,034 WHIF | $20.49 | one-time |
| 25,953 WHIF | $24.99 | one-time |
| 43,912 WHIF | $51.99 | one-time |
| 91,908 WHIF | $103.99 | one-time |


## Frequently asked questions

### Is Sumtech IoT free?

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

### Is WHIF free?

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

### Do Sumtech IoT or WHIF have ads?

WHIF shows ads; Sumtech IoT does not.

### Which is updated more often, Sumtech IoT or WHIF?

Sumtech IoT ships an update weekly, and WHIF weekly. Most recently, Sumtech IoT was updated on October 30, 2026 and WHIF on November 9, 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.*