# Spark vs Rescue Shift

The clearest difference is review sentiment: Spark at 75% against Rescue Shift's 0%. Spark also leads on rating (4.8 vs 1.0) and ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Spark sells 2 one-off in-app purchases and Rescue Shift sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Spark holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Spark has 7.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of Spark's written reviews are positive against 0% of Rescue Shift's.

Spark ships an update every 5 weeks, Rescue Shift monthly. The most recent releases landed on September 30, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Spark | Rescue Shift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (7.5K ratings)](https://appshunter.io/ios/app/spark-shift-calendar/id390915382/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/rescue-shift/id6745313356/reviews) |
| Number of ratings | **7.5K** | 1 |
| Positive reviews | **74.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 66 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [E.L.K. Equities LLC](https://appshunter.io/developer/1775442602) | [Eduardo Verde](https://appshunter.io/developer/1811743464) |

## What reviewers say

### Spark

[App page](https://appshunter.io/ios/app/spark-shift-calendar/id390915382)

This app simplifies shift work for professionals like first responders and healthcare workers. It offers full customization, secure cloud syncing, and streamlined shift trading. Plan your life and stay organized with instant visual cues and reliable support.

**Highlights:** Full shift customization, Secure cloud sync, Streamlined shift trades, Instant visual cues, Comprehensive shift coverage, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription Renewal | $0.99 | one-time |
| Initial Annual Subscription | $5.99 | one-time |

**What reviewers like**

- 🚀 Excellent calendar app
- 👍 Easy to use and set up
- 🔒 Secure and reliable
- 💡 Customizable and feature-rich
- 👍 Great for shift work and emergency services

**What reviewers complain about**

- 🐛 Occasional crashes and bugs
- 💰 Subscription model and pricing issues
- 🔧 Needs more frequent updates
- 🔧 Compatibility issues with newer devices
- 🔧 Lack of certain features (e.g., widgets, dark mode)

**Reported bugs**

- Login and authentication problems
- Data loss and sync issues after updates
- Unreliable performance on some devices

**Requested features**

- Ability to sync with more calendar services
- More customization options
- Improved user interface and design
- Ability to view past schedules and events


### Rescue Shift

[App page](https://appshunter.io/ios/app/rescue-shift/id6745313356)

This app helps firefighters, paramedics, and EMTs manage their complex rotating work schedules. It displays your entire work calendar, tracks overtime and training, and allows you to share your schedule with family.

**Highlights:** Custom rotation scheduling, Overtime and training tracking, Retirement countdown, Family schedule sharing, First responder focused

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium RescueShift | $2.99 | per month |


## Frequently asked questions

### Is Spark free?

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

### Is Rescue Shift free?

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

### Which has better reviews, Spark or Rescue Shift?

Spark is rated higher. Spark averages 4.8 out of 5 from 7.5K ratings, while Rescue Shift averages 1.0 from 1 ratings.

### Do Spark or Rescue Shift have ads?

Rescue Shift shows ads; Spark does not.

### Which is updated more often, Spark or Rescue Shift?

Spark ships an update every 5 weeks, and Rescue Shift monthly. Most recently, Spark was updated on September 30, 2026 and Rescue Shift on September 9, 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.*