# SMST vs InterAPPtion

The clearest difference is update cadence: InterAPPtion at fortnightly against SMST's every 35 months. SMST's advantage is iOS requirement (9.0 vs 15.1). 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.

SMST ships an update every 35 months, InterAPPtion fortnightly. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SMST | InterAPPtion |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Fortnightly** |
| Size | 1 MB | 48 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Opatus AB](https://appshunter.io/developer/857716985) | [Technische Universitaet Muenchen](https://appshunter.io/developer/491390196) |

## What reviewers say

### SMST

[App page](https://appshunter.io/ios/app/smst/id914209039)

**Features:** macOS Compatibility

**In-app purchases:** none


### InterAPPtion

[App page](https://appshunter.io/ios/app/interapption/id6747184842)

**In-app purchases:** none


## Frequently asked questions

### Is SMST free?

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

### Is InterAPPtion free?

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

### Do SMST or InterAPPtion have ads?

Neither SMST nor InterAPPtion shows ads.

### Which is updated more often, SMST or InterAPPtion?

SMST ships an update every 35 months, and InterAPPtion fortnightly. Most recently, SMST was updated on October 7, 2026 and InterAPPtion on October 8, 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.*