# ProtoPie Player vs Substrack

The clearest difference is update cadence: Substrack at every 4 days against ProtoPie Player's every 5 weeks. 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.

ProtoPie Player ships an update every 5 weeks, Substrack every 4 days. The most recent releases landed on October 4, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ProtoPie Player | Substrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (27 ratings)](https://appshunter.io/ios/app/protopie-player/id1015837511/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 66 MB | 41 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Studio XID](https://appshunter.io/developer/1015837510) | [Baris Gunduz](https://appshunter.io/developer/6775582146) |

## What reviewers say

### ProtoPie Player

[App page](https://appshunter.io/ios/app/protopie-player/id1015837511)

This app allows you to view, test, and experience interactive prototypes created with a companion desktop tool. Access prototypes from the cloud or save them locally for offline use on your mobile devices. It enables easy sharing and testing of designs with colleagues, clients, or users.

**Highlights:** View and test prototypes, Access cloud prototypes, Save prototypes locally, Use native device capabilities, Control playback speed, Share prototypes easily

**Features:** Vision Pro support

**In-app purchases:** none


### Substrack

[App page](https://appshunter.io/ios/app/substrack-payment-tracker/id6775582144)

**In-app purchases:** none


## Frequently asked questions

### Is ProtoPie Player free?

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

### Is Substrack free?

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

### Do ProtoPie Player or Substrack have ads?

Neither ProtoPie Player nor Substrack shows ads.

### Which is updated more often, ProtoPie Player or Substrack?

ProtoPie Player ships an update every 5 weeks, and Substrack every 4 days. Most recently, ProtoPie Player was updated on October 4, 2026 and Substrack on September 24, 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.*