81
BU Score
Excellent
Spark + AI: Persönliche E-Mail
✍️ BU Analytics Review
“
Spark + AI: Persönliche E-Mail is an iOS app from Readdle Technologies Limited in the Productivity category, currently rated 4.6★ across 81,520 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.
Our BU Score puts it at 81 — Excellent (strong product-market fit). For a Productivity app, that means strong product-market fit.
Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.
creator
📊 Performance Tracking LIVE
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Rating
—
Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 14 of 14 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
| Mid install base (81,520 ratings)METRIC | +$5,500 | |
| Paid app ($0.00)METRIC | +$2,800 | |
| Excellent rating (4.6★)METRIC | +$2,200 | |
| worth every pennyREVIEW | +$2,000 | |
| bugsREVIEW | −$1,800 | |
| 5 starREVIEW | +$1,800 | |
| cancelledREVIEW | −$1,500 | |
| excellent appREVIEW | +$1,500 | |
| Mature app (10y old)METRIC | +$1,500 | |
| Multilingual (10 languages)METRIC | +$1,500 | |
| highly recommendREVIEW | +$1,400 | |
| slowREVIEW | −$1,200 | |
| too expensiveREVIEW | −$1,000 | |
| support teamREVIEW | +$900 |
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Jan 26
Feb 26
Mar 26
Apr 26
May 26
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →💾 594 MB🔞 4+📱 iOS 16.4+🔖 v3.19.14🔄 updated 2d ago🌐 EN, FR, DE, IT, JA +5📂 Productivity💰 Paid🚀 Launched 2015 (10y old)
📝 About this app
Reclaim your time and focus with Spark — the AI-powered email app loved by millions. Declutter your inbox, manage your calendar, and move through emails faster than ever.
“Best of the App Store” – Apple
“It’s a combination of polish, simplicity, and depth.” – FastCompany
“You can create an email experience that works for you.” – TechCrunch
MANAGE MULTIPLE EMAIL ACCOUNTS
Connect all your emails — including Gmail, Microsoft Outlook, AOL, Yahoo, Hotmail, IMAP, GMX, and iCloud — in one unified inbox.
STAY ORGANIZED WITH SMART INBOX
Keep personal and high-priority emails up top — newsletters and notifications stay neatly grouped below.
WORK SMARTER WITH SPARK +AI
Summarize long threads, draft replies, rephrase messages, and adjust tone — all powered by AI. Use your AI Assistant to manage your inbox, translate emails, and keep projects moving.
GET MORE DONE WITH EMAIL ESSENTIALS
- Mark emails as done or set aside for later
- Mute email threads you’re no longer interested in.
- Schedule emails to send later — even if your device is off.
- Filter with Smart Search and Smart Folders
PROTECT YOUR INBOX WITH GATEKEEPER
Pre-screen new senders with Gatekeeper and block unwanted contacts instantly.
PRIORITIZE EMAILS AND SENDERS
Mark what’s important so it’s always at the top of your inbox. Group emails from senders or domains to keep your inbox clean.
MANAGE YOUR CALENDAR AND MEETINGS
Connect your calendars to stay on top of your day.
CONNECT EMAILS TO INTEGRATIONS
Connect Spark to apps like Notion, Asana, Things, and 10+ integrations to take action on everything in your inbox.
SECURE AND PRIVATE EMAIL
Spark encrypts your data, relies on Google Cloud’s secure infrastructure, and is fully GDPR compliant.
COLLABORATE WITH YOUR TEAM
- Create a team to collaborate on emails.
- Co-author emails and discuss content in private comments.
- Share secure links to specific emails.
- Track read receipts to keep work moving.
ENJOY THE ESSENTIALS FOR FREE
Try Spark Plus or Spark Pro free for 7 days — or stick with our powerful free plan.
Download Spark and reclaim your day.
What is Spark?
Spark is a cross-platform email client that helps individuals and teams manage their inboxes and calendar with smart, AI-powered tools. It works across all platforms and devices so that you can be more effective, at home, in the office, or on the go.
Who is Spark for?
Short answer: Anyone who deals with a lot of emails. Spark is perfect for busy professionals, freelancers, and teams who need to stay organized and communicate effectively. It’s also great for individuals who want to manage their personal and work accounts in a unified inbox.
Is it difficult to set up?
Spark is highly customizable, but also easy to master. You’ll find multiple ways to set up your inbox, swipes, and shortcuts in Settings.
Terms of Service: https://sparkmailapp.com/legal/terms
Privacy Policy: https://sparkmailapp.com/legal/privacy-app
Help: support@sparkmailapp.com
“Best of the App Store” – Apple
“It’s a combination of polish, simplicity, and depth.” – FastCompany
“You can create an email experience that works for you.” – TechCrunch
MANAGE MULTIPLE EMAIL ACCOUNTS
Connect all your emails — including Gmail, Microsoft Outlook, AOL, Yahoo, Hotmail, IMAP, GMX, and iCloud — in one unified inbox.
STAY ORGANIZED WITH SMART INBOX
Keep personal and high-priority emails up top — newsletters and notifications stay neatly grouped below.
WORK SMARTER WITH SPARK +AI
Summarize long threads, draft replies, rephrase messages, and adjust tone — all powered by AI. Use your AI Assistant to manage your inbox, translate emails, and keep projects moving.
GET MORE DONE WITH EMAIL ESSENTIALS
- Mark emails as done or set aside for later
- Mute email threads you’re no longer interested in.
- Schedule emails to send later — even if your device is off.
- Filter with Smart Search and Smart Folders
PROTECT YOUR INBOX WITH GATEKEEPER
Pre-screen new senders with Gatekeeper and block unwanted contacts instantly.
PRIORITIZE EMAILS AND SENDERS
Mark what’s important so it’s always at the top of your inbox. Group emails from senders or domains to keep your inbox clean.
MANAGE YOUR CALENDAR AND MEETINGS
Connect your calendars to stay on top of your day.
CONNECT EMAILS TO INTEGRATIONS
Connect Spark to apps like Notion, Asana, Things, and 10+ integrations to take action on everything in your inbox.
SECURE AND PRIVATE EMAIL
Spark encrypts your data, relies on Google Cloud’s secure infrastructure, and is fully GDPR compliant.
COLLABORATE WITH YOUR TEAM
- Create a team to collaborate on emails.
- Co-author emails and discuss content in private comments.
- Share secure links to specific emails.
- Track read receipts to keep work moving.
ENJOY THE ESSENTIALS FOR FREE
Try Spark Plus or Spark Pro free for 7 days — or stick with our powerful free plan.
Download Spark and reclaim your day.
What is Spark?
Spark is a cross-platform email client that helps individuals and teams manage their inboxes and calendar with smart, AI-powered tools. It works across all platforms and devices so that you can be more effective, at home, in the office, or on the go.
Who is Spark for?
Short answer: Anyone who deals with a lot of emails. Spark is perfect for busy professionals, freelancers, and teams who need to stay organized and communicate effectively. It’s also great for individuals who want to manage their personal and work accounts in a unified inbox.
Is it difficult to set up?
Spark is highly customizable, but also easy to master. You’ll find multiple ways to set up your inbox, swipes, and shortcuts in Settings.
Terms of Service: https://sparkmailapp.com/legal/terms
Privacy Policy: https://sparkmailapp.com/legal/privacy-app
Help: support@sparkmailapp.com
🆕 What's New · v3.19.14
In this update:
Just some fresh paint and tune-ups. No bigs.
We're always here for you at support@sparkmailapp.com
Just some fresh paint and tune-ups. No bigs.
We're always here for you at support@sparkmailapp.com
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- Spark + AI: Persönliche E-Mail
- Developer
- Readdle Technologies Limited
- Bundle ID
- com.readdle.smartemail
- App Store URL
- Open in App Store
- Category
- Productivity
- Content rating
- 4+
- Languages
- EN, FR, DE, IT, JA, PT, RU, ZH, ES, UK
Company
- Website
- Not found
- Tagline
- Smart. Focused. Email.
- Description
- Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest.
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- OG image
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- $166.7KAI low
- AI annual estimate
- $2.0M/yr
- ML model estimate / mo
- $12.8K/mo
- Top-grossing rank
- 🇩🇪#49 /100 🇫🇷#64 /100 🇬🇧#90 /100
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- https://x.com/SparkMailApp
- https://www.linkedin.com/showcase/spark-mail/
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- http://sparkmailapp.com/features/newsletter-notifications
- Press / News
- Not found
Contacts & Socials
- Socials
- facebook · instagram · linkedin · twitter · youtube
- Not found
- Phone
- Not found
- Contact page
- http://sparkmailapp.com/help
- About page
- http://sparkmailapp.com/teams
✨AI Revenue EstimateCONFIDENCE: LOW
Based on publicly available data, Spark Email is estimated to generate $2 million in annual revenue. This translates to approximately $166,667 in monthly revenue. This estimate is for 'Spark Email' and may not fully reflect the current revenue specifically from the 'Spark + AI: Persönliche E-Mail' premium features, which were introduced in May 2023, after the reported revenue figure for Spark Email. Readdle, the developer, has overall revenue estimates ranging from $7.7 million to $100 million across different sources.
Sources mentioned: Owler, Readdle Blog, Zippia, Growjo
⭐Recent App Store Reviews49 latest · avg 3.0★ · 30.6% 5★ · 28.6% 1★
5★15 (31%)
4★4 (8%)
3★10 (20%)
2★6 (12%)
1★14 (29%)
+0 ratings/week
Praise: love ×11 great ×11 best ×5 recommend ×2 perfect ×2Complaints: subscription ×7 bug ×3 crash ×2 terrible ×2 broken ×1
Top positive
★★★★★ The answer to my email problems
This email client addresses problems with organization, prioritization, drafting emails that actually sound similar to you, and unlike most other solutions, gives you a chance to make a choice before it drafts a response. It also solves the…
★★★★★ Great app
Works great I like the unified inbox. I wish they didn’t charge extra to block senders.…
Top negative
★☆☆☆☆ Laughable
I love how this company says we are always here for you, and to email them any issues. I have been emailing them the same bugs that they refuse to fix for years now. And they will have you become their IT department and send logs or video o…
★☆☆☆☆ Was once a great tool
I’ve had spark as my primary email app for several years. I don’t know what has changed on the backend, but it now operates EXTREMELY SLOW when trying to pull up emails. If I try to search for emails using keywords/terms - it initially rend…
📈Ratings growth81,529 ratings+36% lifetimeShow 3-year history estimate ▾
Tracked (35 weeks) Pre-tracking estimate (34 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic Distribution●Top 10●Top 30●Top 60
🌍Top Countries — Grossing Rank3 countries
🇩🇪DE#49 /100
🇫🇷FR#64 /100
🇬🇧GB#90 /100
📊Category Rank Trajectory#49 now · best #49 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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