# Zing Sessions vs Fast

The clearest difference is update cadence: Fast at every 2 days against Zing Sessions's every 4 months. Zing Sessions's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Zing Sessions ships an update every 4 months, Fast every 2 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Zing Sessions | Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (17 ratings)](https://appshunter.io/ios/app/zing-sessions/id1145414934/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 824 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Zing Performance Ltd](https://appshunter.io/developer/735387177) | [Invotek AS](https://appshunter.io/developer/1836667478) |

## What reviewers say

### Zing Sessions

[App page](https://appshunter.io/ios/app/zing-sessions/id1145414934)

Enhance cognitive and physical performance with personalized exercises designed to boost brainpower. This mobile app offers on-screen skill tests and physical activities based on neuroscience research to improve attention, memory, and coordination.

**Highlights:** On-the-go accessibility, Personalized exercise programs, Cognitive, emotional, and social performance training, Improved attention and memory, Enhanced coordination and spatial awareness, Stress management benefits

**In-app purchases:** none


### Fast

[App page](https://appshunter.io/ios/app/fast-e-intermittent-fasting/id6759206116)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zing Sessions free?

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

### Is Fast free?

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

### Do Zing Sessions or Fast have ads?

Neither Zing Sessions nor Fast shows ads.

### Which is updated more often, Zing Sessions or Fast?

Zing Sessions ships an update every 4 months, and Fast every 2 days. Most recently, Zing Sessions was updated on October 2, 2026 and Fast on October 1, 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.*