# Email Client vs SparkShift

The clearest difference is rating: SparkShift at 5.0 against Email Client's 4.6. SparkShift also leads on update cadence (every 9 days vs every 3 weeks). Email Client's advantage is ratings volume (4.7K vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Email Client sells 7 in-app purchases, starting at $19.99 per month and SparkShift sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

SparkShift holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Email Client has 4.7K ratings behind it against 3, so its average is the more settled of the two.

Email Client ships an update every 3 weeks, SparkShift every 9 days. The most recent releases landed on November 12, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Email Client | SparkShift |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (4.7K ratings)](https://appshunter.io/ios/app/email-client-boomerang-mail/id1236906322/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sparkshift/id6737710285/reviews)** |
| Number of ratings | **4.7K** | 3 |
| Positive reviews | 39.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 92 MB | 199 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Baydin Inc.](https://appshunter.io/developer/1121758661) | [SPARKSHIFT LLC](https://appshunter.io/developer/1777536968) |

## What reviewers say

### Email Client

[App page](https://appshunter.io/ios/app/email-client-boomerang-mail/id1236906322)

Manage multiple email accounts efficiently with features like one-tap calendar scheduling, read receipts, and email scheduling. Get AI-powered feedback for better writing and pause your inbox when needed. Supports Gmail and Outlook.

**Highlights:** One-tap calendar scheduling, Read receipts and tracking, Email scheduling for later, AI writing feedback, Inbox pause functionality, Support for multiple accounts

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Boomerang Gmail Pro Monthly | $19.99 | per month |
| Boomerang Gmail Pro Monthly | $19.99 | per month |
| Boomerang Outlook Pro Monthly | $19.99 | per month |
| Boomerang Outlook Pro Monthly | $19.99 | per month |
| Boomerang Gmail Pro Yearly | $179.99 | per year |
| Boomerang Outlook Pro Yearly | $179.99 | per year |
| Boomerang Gmail Pro Yearly | $179.99 | per year |

**What reviewers like**

- 🚀 Efficient email management
- 👍 Intuitive interface
- 💡 Useful features like scheduling and boomerang
- 🚀 Fast and responsive

**What reviewers complain about**

- 🐛 Reliability issues (crashes, emails not syncing)
- 💰 Expensive subscription model
- 🔒 Concerns about data privacy
- 🐛 Bugs and glitches

**Reported bugs**

- Emails not loading properly
- Unread email count not updating correctly
- Scheduled emails not sending at the right time
- Compatibility issues with other apps (e.g., SwiftKey)

**Requested features**

- Unified inbox for multiple email accounts
- Customizable swipe gestures
- Dark mode
- Better email threading and conversation view
- Improved notification handling


### SparkShift

[App page](https://appshunter.io/ios/app/sparkshift/id6737710285)

This app helps electricians streamline OJT logging, jobsite organization, and exam preparation. It provides field calculators and reference tools, consolidating essential resources for apprentices and journeymen in one place.

**Highlights:** Log OJT and work hours, Field calculators for electrical work, Journeyman and master exam practice, Organize jobsite details and notes, Track apprenticeship progress, Export hour records

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Journeyman Month | $0.99 | per month |
| Apprentice Month Subscription | $6.99 | per month |
| Journeyman Year Subscription | $29.00 | per year |
| Apprentice Yearly Sub | $69.99 | per year |


## Frequently asked questions

### Is Email Client free?

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

### Is SparkShift free?

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

### Which has better reviews, Email Client or SparkShift?

SparkShift is rated higher. Email Client averages 4.6 out of 5 from 4.7K ratings, while SparkShift averages 5.0 from 3 ratings.

### Do Email Client or SparkShift have ads?

Neither Email Client nor SparkShift shows ads.

### Which is updated more often, Email Client or SparkShift?

Email Client ships an update every 3 weeks, and SparkShift every 9 days. Most recently, Email Client was updated on November 12, 2026 and SparkShift on November 4, 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.*