Comparison

Email Client vs SparkShift

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Email Client

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
Read full description

Join millions who use Boomerang to email productively! See all of your email accounts, get one-tap calendar scheduling, see read receipts, and schedule emails to be sent later. Works with Gmail, Outlook & Hotmail accounts. NEW: Set Boomerang as your default email. Select Settings - scroll down, select Boomerang - tap Default Email App - tap Boomerang. ***Featured in NYT, TC, Inc., The Guardian and more!*** Why Boomerang: • NEW! One-tap calendar scheduling. Share availability and schedule a meeting while in email. • NEW! Set different colored email accounts. • Read Receipts. Track email opens and clicks. • Easy follow up: Get notified when no one replies to your email. • Inbox Pause: Stop incoming emails until you’re ready for them. • Email scheduling. Schedule emails to be sent later. • Get faster replies: Our AI gives you feedback to write better emails. Know if your emails are too short, too wordy, or just right. • Offline Support • Dark Mode • Custom swipes Loving the app? Please post a positive review. Thank you for your five stars. It really helps! Questions/feedback? Email us at support+iphone@boomerangapp.com or tweet to @Boomerang A BIG thanks to everyone who rates us 5 stars. Your support means the world to us. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SparkShift

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
Read full description

SparkShift helps electricians stop rebuilding hours from memory: log OJT records, organize jobsites, open field calculators, and study for exams from one jobsite-ready app. Built for electrical apprentices, journeymen, foremen, and contractors, SparkShift keeps the paperwork and reference tools you already reach for close to the work. OJT AND WORK HOURS - Log apprenticeship and work hours from your phone - Add timestamps, notes, work categories, and optional location context - Track progress across union and merit-shop workflows - Review and export hour records before sharing with a training program, employer, union local, contractor, state board, or provincial authority FIELD CALCULATORS AND REFERENCES - Use NEC/CEC-aware calculators for common electrical work - Check voltage drop, conduit fill, box fill, wire sizing, load calculations, and other field references - Keep practical code-study tools nearby when service is weak or you are moving between jobsites EXAM PREP - Practice journeyman and master exam questions - Review explanations, study notes, and confidence feedback - Keep prep connected to the same trade record you use in the field JOBSITES, CREWS, AND RECORDS - Organize jobsite details, schedules, absences, and field notes - Support submitted-hour review and crew visibility for foremen and contractor workflows - Keep certifications, work history, community, and career tools in one electrician-first system SparkShift was built from real jobsite paperwork pain: lost logs, rebuilt hours, scattered notes, and reference tools spread across too many apps. IMPORTANT LIMITS SparkShift is a recordkeeping and workflow tool. It is not a licensing board, apprenticeship sponsor, employer of record, payroll provider, legal advisor, code authority, inspector, or safety authority. Requirements vary by jurisdiction, training program, employer, union local, province, state, and storefront. Always verify current rules before relying on an export, calculation, report, or submission. LEGAL Privacy Policy: https://sparkshift.app/privacy Terms of Service: https://sparkshift.app/terms Community Guidelines: https://sparkshift.app/community-guidelines Support: https://sparkshift.app/contact

Screenshots

Email Client4 screens
SparkShift4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Email Client ships an update every 3 weeks, SparkShift every 9 days. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
Email Client versus SparkShift: the parameters behind the verdict, then further details
ParameterEmail ClientSparkShift
PriceFreeFree
Rating4.6 (4.7K ratings)5.0 (3 ratings) — better
Positive reviews39.1% of reviews—
Number of ratings4.7K — better3
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.2
Further details — not scored
Size92 MB199 MB
Age rating9+4+
DeveloperBaydin Inc.SPARKSHIFT LLC

Customer experience

Email Client

All ratings4,661 ratings
Positive90.8%
Neutral4.2%
Negative5.0%
Written reviews327 reviews
Positive39.1%
Neutral13.8%
Negative47.1%

SparkShift

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Email Client

Reported bugs

4 issues
  • 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

6 requests
  • Unified inbox for multiple email accounts
  • Customizable swipe gestures
  • Dark mode
  • Better email threading and conversation view
  • Improved notification handling
Show 1 more
  • Support for more email providers (e.g., iCloud, Yahoo)

SparkShift

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Email Client

Subscriptions7
  • Boomerang Gmail Pro Monthly7 Days trial$19.991 Month
  • Boomerang Gmail Pro Monthly2 variants$19.991 Month
  • Boomerang Outlook Pro Monthly7 Days trial$19.991 Month
Show 4 more
  • Boomerang Outlook Pro Monthly3 variants$19.991 Month
  • Boomerang Gmail Pro Yearly14 Days trial$179.991 Year
  • Boomerang Outlook Pro Yearly14 Days trial$179.991 Year
  • Boomerang Gmail Pro Yearly$179.991 Year
4 purchases

SparkShift

Subscriptions4
  • Journeyman Month$0.991 Month
  • Apprentice Month Subscription$6.991 Month
  • Journeyman Year Subscription$29.001 Year
Show 1 more
  • Apprentice Yearly Sub$69.991 Year

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 11, 2026 and SparkShift on November 4, 2026.

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