# HowWow vs tdc.

HowWow and tdc. are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

HowWow ships an update every 11 days, tdc. every 3 weeks. The most recent releases landed on September 15, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | HowWow | tdc. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/howwow-how-things-work/id6736943726/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 145 MB | 89 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anushank Dagar](https://appshunter.io/developer/1773970406) | [Abdul Majid Shah Bukhari](https://appshunter.io/developer/1896112171) |

## What reviewers say

### HowWow

[App page](https://appshunter.io/ios/app/howwow-how-things-work/id6736943726)

This AI-powered learning companion engages students in grades 6-12 through real-time voice conversations. It employs a Socratic method, guiding users to discover concepts independently and reinforcing learning with instant questions and gamified elements.

**Highlights:** Real-time voice interaction, Socratic teaching approach, Instant concept reinforcement, Gamified learning experience, Multiple AI tutor personalities, Covers full school syllabus

**Features:** macOS Compatibility

**In-app purchases:** none


### tdc.

[App page](https://appshunter.io/ios/app/tdc/id6765877675)

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

**In-app purchases:** none


## Frequently asked questions

### Is HowWow free?

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

### Is tdc. free?

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

### Do HowWow or tdc. have ads?

Neither HowWow nor tdc. shows ads.

### Which is updated more often, HowWow or tdc.?

HowWow ships an update every 11 days, and tdc. every 3 weeks. Most recently, HowWow was updated on September 15, 2026 and tdc. on September 13, 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.*