# Spark vs When i Do Shifts

The clearest difference is review sentiment: When i Do Shifts at 100% against Spark's 75%. When i Do Shifts also leads on monetization model (free vs free with in-app purchases) and update cadence (every 8 days vs every 5 weeks). Spark's advantage is ratings volume (7.5K vs 2) and iOS requirement (15.6 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Spark sells 2 one-off in-app purchases and When i Do Shifts sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

When i Do Shifts holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spark has 7.5K ratings behind it against 2, 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 100% of When i Do Shifts's.

Spark ships an update every 5 weeks, When i Do Shifts every 8 days. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Spark | When i Do Shifts |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (7.5K ratings)](https://appshunter.io/ios/app/spark-shift-calendar/id390915382/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/when-i-do-shifts-tracker/id6753106853/reviews)** |
| Number of ratings | **7.5K** | 2 |
| Positive reviews | 74.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 23 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [E.L.K. Equities LLC](https://appshunter.io/developer/1775442602) | [Igor Stojanovic](https://appshunter.io/developer/1823750175) |

## 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, Vision Pro support

**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


### When i Do Shifts

[App page](https://appshunter.io/ios/app/when-i-do-shifts-tracker/id6753106853)

This app simplifies work schedule management for individuals and teams. It helps users stay organized, productive, and reduce stress by providing a modern approach to shift planning.

**Highlights:** Organize work schedules, Stay productive, Reduce stress, Modern shift management, Individual and team use

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $19.99 | per year |
| Premium Upgrade | $14.99 | one-time |


## Frequently asked questions

### Is Spark free?

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

### Is When i Do Shifts free?

When i Do Shifts is free to download, with in-app purchases available.

### Which has better reviews, Spark or When i Do Shifts?

When i Do Shifts is rated higher. Spark averages 4.8 out of 5 from 7.5K ratings, while When i Do Shifts averages 5.0 from 2 ratings.

### Do Spark or When i Do Shifts have ads?

Neither Spark nor When i Do Shifts shows ads.

### Which is updated more often, Spark or When i Do Shifts?

Spark ships an update every 5 weeks, and When i Do Shifts every 8 days. Most recently, Spark was updated on October 22, 2026 and When i Do Shifts on October 25, 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.*