# Timeshifter Shift Work vs TrimTab Fit

The clearest difference is update cadence: TrimTab Fit at weekly against Timeshifter Shift Work's every 3 weeks. TrimTab Fit also leads on iOS requirement (15.1 vs 17.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Timeshifter Shift Work sells 2 in-app purchases, starting at $6.99 per month and TrimTab Fit sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

Timeshifter Shift Work ships an update every 3 weeks, TrimTab Fit weekly. The most recent releases landed on October 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Timeshifter Shift Work | TrimTab Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (21 ratings)](https://appshunter.io/ios/app/timeshifter-shift-work/id1594538527/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 51.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 63 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Timeshifter Inc.](https://appshunter.io/developer/1380684373) | [Michael Deal](https://appshunter.io/developer/1820103507) |

## What reviewers say

### Timeshifter Shift Work

[App page](https://appshunter.io/ios/app/timeshifter-shift-work/id1594538527)

Optimize your sleep and energy levels with science-based guidance tailored for shift workers. This app provides personalized advice to combat circadian disruption, improving performance, health, and quality of life. It replaces common myths with evidence-based interventions to reset your internal clock.

**Highlights:** Personalized circadian clock advice, Practical real-world adjustments, Quick shift schedule entry, Commute and preparation time inclusion, Fatigue prediction alerts, Timely advice notifications

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shiftwork | $6.99 | per month |
| Shiftwork | $69.99 | per year |


### TrimTab Fit

[App page](https://appshunter.io/ios/app/trimtab-fit/id6761439064)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TrimTab Pro Monthly | $14.99 | per month |
| TrimTab Pro Yearly | $135.99 | per year |


## Frequently asked questions

### Is Timeshifter Shift Work free?

Timeshifter Shift Work is free to download, with in-app purchases available.

### Is TrimTab Fit free?

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

### Do Timeshifter Shift Work or TrimTab Fit have ads?

Neither Timeshifter Shift Work nor TrimTab Fit shows ads.

### Which is updated more often, Timeshifter Shift Work or TrimTab Fit?

Timeshifter Shift Work ships an update every 3 weeks, and TrimTab Fit weekly. Most recently, Timeshifter Shift Work was updated on October 30, 2026 and TrimTab Fit on September 28, 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.*