# Probiotics Guide. vs Session

The clearest difference is ads: Session at none against Probiotics Guide.'s shown. Session also leads on update cadence (weekly vs every 2 weeks). Probiotics Guide.'s advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price and in-app purchases there is nothing between them.

Both are free to download. Probiotics Guide. sells 2 in-app purchases, starting at $1.99 per month and Session sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Probiotics Guide. ships an update every 2 weeks, Session weekly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Probiotics Guide. | Session |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 160 MB | 11 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Olga Ivanova](https://appshunter.io/developer/1733570435) | [Ivan Gavrilov](https://appshunter.io/developer/1876880901) |

## What reviewers say

### Probiotics Guide.

[App page](https://appshunter.io/ios/app/probiotics-guide/id6720753184)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription | $1.99 | per month |
| Sponsorship | $1.99 | one-time |


### Session

[App page](https://appshunter.io/ios/app/session-100-hour-skill-method/id6759194130)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skill Kit Pro — Monthly | $4.99 | per month |
| Skill Kit Pro — Quaterly | $9.99 | per 3 months |
| Skill Kit Pro — Yearly | $19.99 | per year |


## Frequently asked questions

### Is Probiotics Guide. free?

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

### Is Session free?

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

### Do Probiotics Guide. or Session have ads?

Probiotics Guide. shows ads; Session does not.

### Which is updated more often, Probiotics Guide. or Session?

Probiotics Guide. ships an update every 2 weeks, and Session weekly. Most recently, Probiotics Guide. was updated on November 4, 2026 and Session on October 31, 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.*