# SpineTracker vs Askidd

The clearest difference is update cadence: SpineTracker at every 10 days against Askidd's every 3 months. SpineTracker also leads on ratings volume (6 vs 2). On price, rating, in-app purchases and monetization model there is nothing between them.

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 SpineTracker against 5.0 for Askidd. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

SpineTracker ships an update every 10 days, Askidd every 3 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SpineTracker | Askidd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/spinetracker/id1492554151/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/askidd/id1586459209/reviews) |
| Number of ratings | **6** | 2 |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free | Free |
| Size | 36 MB | 50 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Stanford University](https://appshunter.io/developer/292922032) | [University of Wisconsin-Madison Shared Apps](https://appshunter.io/developer/908478605) |

## What reviewers say

### SpineTracker

[App page](https://appshunter.io/ios/app/spinetracker/id1492554151)

This digital health platform assists neurological recovery for both therapists and patients. It offers tailored rehabilitation therapy through in-app exercises and surveys, integrating with the health app and HealthKit.

**Highlights:** Neurological recovery aid, Therapist and patient integration, Daily tailored rehabilitation therapy, In-app exercises and surveys, Health app and HealthKit integration

**In-app purchases:** none


### Askidd

[App page](https://appshunter.io/ios/app/askidd/id1586459209)

This application simplifies air sampling processes for professionals. It enables users to efficiently record cartridge usage, sync data to a secure cloud, and export information with ease. The app also remembers sampler names for streamlined repeat entries.

**Highlights:** Record cartridge insertion and removal, Sync cartridges with secure backend, Securely export cartridge data, Remember sampler name between submissions, International air sampling improvement

**In-app purchases:** none


## Frequently asked questions

### Is SpineTracker free?

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

### Is Askidd free?

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

### Which has better reviews, SpineTracker or Askidd?

SpineTracker and Askidd are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Which is updated more often, SpineTracker or Askidd?

SpineTracker ships an update every 10 days, and Askidd every 3 months. Most recently, SpineTracker was updated on November 4, 2026 and Askidd on November 3, 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.*