# TireLab vs Shift Calendar

The clearest difference is rating: TireLab at 5.0 against Shift Calendar's 2.3. TireLab also leads on review sentiment (68% vs 28%). Shift Calendar's advantage is monetization model (free vs paid) and update cadence (fortnightly vs every 7 months). On price, ads, in-app purchases and device support there is nothing between them.

TireLab costs $1.99 and Shift Calendar $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TireLab holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: Shift Calendar has 79 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 68% of TireLab's written reviews are positive against 28% of Shift Calendar's.

TireLab ships an update every 7 months, Shift Calendar fortnightly. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | TireLab | Shift Calendar |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/tirelab/id349078048/reviews)** | [2.3 (79 ratings)](https://appshunter.io/ios/app/shift-calendar/id355449249/reviews) |
| Number of ratings | 7 | **79** |
| Positive reviews | **68.0% of reviews** | 27.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.0 | **8.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Weber](https://appshunter.io/developer/349078052) | [Gil Estes](https://appshunter.io/developer/349882768) |

## What reviewers say

### TireLab

[App page](https://appshunter.io/ios/app/tirelab/id349078048)

This app helps you compare and visualize different tire and wheel configurations for your vehicle. It calculates key dimensions, checks for fitment issues, and provides technical references. Supports both Imperial and Metric units.

**Highlights:** Compare tire and wheel dimensions, Visualize configurations with cutaway views, Fitment calculator for vehicle compatibility, Technical reference and glossary, Imperial and Metric unit support, Intuitive interface

**Features:** Vision Pro support

**In-app purchases:** none


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar/id355449249)

A customizable shift calendar designed for firefighters, paramedics, and EMS workers. Easily track work and off days for important personal events, supporting various common shift patterns. Includes note-taking for each shift day.

**Highlights:** Customizable shift schedules, Supports 24/24, 24/48, 24/72 patterns, Supports 48x96 pattern, Alpha and Numeric shift naming, Notes for each shift day, Designed for firefighters and EMS

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 🎨 Customizable shift colors
- ✅ Works for basic schedules
- 📝 Notes feature is great
- 🔄 Smoothly running after updates

**What reviewers complain about**

- 💸 Waste of money
- 🚫 Only allows certain schedules
- 📉 Outdated and not updated
- ❌ Incompatible with new iOS
- 😵 Confusing multiple apps

**Reported bugs**

- Download did not complete
- App keeps crashing
- App does not open
- App is inoperable after Apple update
- App crashes when opening date and adding notes

**Requested features**

- Accommodate 48/96 schedules
- Support for 4 on 4 off shifts
- Support for 5 days on, 4 days off schedules
- Support for split shifts (2x10hrs off 24 then 2x14hrs then off for 4 days)
- Add more shift variations


## Frequently asked questions

### Is TireLab free?

TireLab costs $1.99, with no in-app purchases.

### Is Shift Calendar free?

Shift Calendar costs $1.99, with no in-app purchases.

### Which has better reviews, TireLab or Shift Calendar?

TireLab is rated higher. TireLab averages 5.0 out of 5 from 7 ratings, while Shift Calendar averages 2.3 from 79 ratings.

### Do TireLab or Shift Calendar have ads?

Neither TireLab nor Shift Calendar shows ads.

### Which is updated more often, TireLab or Shift Calendar?

TireLab ships an update every 7 months, and Shift Calendar fortnightly. Most recently, TireLab was updated on October 23, 2026 and Shift Calendar on October 26, 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.*