# Serial 7s vs what happened next?

Serial 7s and what happened next? are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence 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.

On the App Store both sit at effectively the same score — 5.0 for Serial 7s against 5.0 for what happened next?. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Serial 7s | what happened next? |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/serial-7s/id6480178276/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/what-happened-next/id6749170462/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Ad-supported | Ad-supported |
| Size | 42 MB | 151 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [HFX Lab](https://appshunter.io/developer/1139262927) | [Raul Davrishev](https://appshunter.io/developer/1731060019) |

## What reviewers say

### Serial 7s

[App page](https://appshunter.io/ios/app/serial-7s/id6480178276)

This game challenges you to rapidly subtract 7 from a starting number until you can no longer continue. It's based on a cognitive test used to assess attention and memory, with consistent play potentially improving brain skills and helping to prevent cognitive decline.

**Highlights:** Serial 7 subtraction gameplay, Tests attention and memory, Helps prevent cognitive decline, Measures subtraction speed, Randomized starting numbers

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

**In-app purchases:** none


### what happened next?

[App page](https://appshunter.io/ios/app/what-happened-next/id6749170462)

Watch short video clips and guess how they end. Test your intuition and logic with unexpected twists. A fun, minimalistic game suitable for all ages.

**Highlights:** Watch and guess video endings, Interactive video quiz, Short clips with unexpected twists, Test intuition and logic, Suitable for all ages, Minimalistic design

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Serial 7s free?

Serial 7s is free to download, with no in-app purchases.

### Is what happened next? free?

what happened next? is free to download, with no in-app purchases.

### Which has better reviews, Serial 7s or what happened next??

Serial 7s and what happened next? are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Serial 7s or what happened next? have ads?

Both Serial 7s and what happened next? show ads.

### Which is updated more often, Serial 7s or what happened next??

Serial 7s ships an update every 5 months, and what happened next? every 5 months. Most recently, Serial 7s was updated on October 20, 2026 and what happened next? on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*