Comparison

Rd4 vs Saymail

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

Head to head
About

Rd4

This app provides residents of specific Dutch municipalities with essential waste management information. It includes a personal collection calendar, reminders, a waste separation guide, and a digital pass for recycling centers. Stay informed about news and contact support easily.

Highlights
  • Personal waste calendar
  • Container pickup reminders
  • Waste separation guide
  • Digital recycling center pass
  • News and notifications
  • Report illegal dumping
Read full description

Do you live in Beekdaelen, Brunssum, Eijsden-Margraten, Gulpen-Wittem, Heerlen, Kerkrade, Landgraaf, Simpelveld, Vaals or Voerendaal? Then this app about waste and raw materials is indispensable for you! View your calendar, set an alarm, use your digital pass and stay informed. Everything at Your Fingertips with the Rd4-app With the Rd4-app, all the information you need to manage your waste and resources is right at your fingertips. The app gives you access to your personal waste calendar and sends reminders for when to put out your container. You can easily show your digital card at the recycling center and handle everything through your smartphone. Thanks to the handy waste separation guide, sorting waste becomes even easier. Make It Personal By entering your postal code and house number, you'll instantly gain access to your personal calendar and waste separation guide tailored to your needs. For an even more personalized experience, you can also enter your card number. This unlocks the digital card, giving you access to the recycling center, the ability to report illegal dumping, and insights into your personalized waste offers. Always Stay Updated with the Latest News As an Rd4-app user, you're always the first to know about important updates. If a collection day in your area is moved, you'll receive a message under "For me". If there are any changes to the recycling center’s opening hours, you'll find that under "General news". You can also easily contact us via the contact form in the app for any questions or suggestions. An Overview of All Options With your postal code and house number, you can access the following features: • Your personal calendar • Container pickup reminders • The waste separation guide • Information about recycling centers • List of thrift stores • News and notifications If you also enter your card number, you'll unlock additional features: • Digital card for recycling center access • Access to personalized offers • Ability to report illegal dumping The Rd4-app makes managing your waste and resources easier and gives you all the information you need in one place!

About

Saymail

Features
Read full description

Saymail is the AI email client that decides what actually deserves your attention — and what can wait. ONLY THE EMAIL THAT MATTERS, RIGHT WHEN IT MATTERS Most email matters for a moment, then it doesn't. Saymail's AI scores every message by importance — right now, and how that importance will fade — so today's urgent reminder doesn't keep haunting your inbox next week. A flash sale is dead weight by tomorrow; a signed contract still matters years later. Saymail knows the difference, so the slow-burn things never get buried and the noise quietly ages out on its own. LESS INBOX. MORE ATTENTION. Connect your email accounts and let the AI sort the noise so the message that matters rises to the top. Your unread badge lies about what's actually urgent — Saymail scores what's genuinely worth your attention right now, so a wall of unread mail becomes the handful that truly need you. STAY IN FOCUS Set the importance level you care about, and that becomes your filter. Only messages that clear your bar are allowed to notify you — everything else waits quietly until you're ready for it. YOU STAY IN CHARGE Saymail can draft replies for you, but nothing is ever sent without your review and your click. BUILT ON A DESKTOP APP THAT HAS ALREADY EARNED TRUST Saymail started as a privacy-first email client for Windows, macOS and Linux, and has passed Google's independent CASA Tier 2 security assessment — a hands-on review by TAC Security, not a self-graded checklist. The same AI-powered importance scoring now comes to iPhone and iPad. WHY PEOPLE TRUST SAYMAIL - Independently security-assessed (Google CASA Tier 2, verified by TAC Security) - Built by an EU company, GDPR-compliant - Bring your own AI: connect OpenAI, Anthropic, Gemini, or run a model yourself — no lock-in to a single provider Saymail is free to download. Some AI features may require in-app credits or an optional subscription. Learn more at saymail.eu. Terms of Use (EULA): https://saymail.eu/en/legal/terms Privacy Policy: https://saymail.eu/en/legal/privacy

Screenshots

Rd44 screens
Saymail4 screens

Verdict

The call

The clearest difference is in-app purchases: Rd4 at none against Saymail's 8. Rd4 also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support 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. Saymail sells 8 in-app purchases, starting at $3.99 per month. Rd4 asks for nothing beyond the download.

UpkeepUpdate frequency

Rd4 ships an update every 2 months, Saymail every 5 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 7 level
Rd4 versus Saymail: the parameters behind the verdict, then further details
ParameterRd4Saymail
PriceFreeFree
Rating3.7 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size39 MB7 MB
Age rating4+4+
DeveloperRd4-afvalappRene Rijbroek

In-app purchases

None

Rd4

No in-app purchases

8 purchases

Saymail

Subscriptions2
  • Cloud Sync Monthly$3.991 Month
  • Cloud Sync Yearly$35.001 Year
One-time6
  • 500 Cloud Credits$3.99
  • 1,000 Cloud Credits$7.99
  • 2,000 Cloud Credits$9.99
Show 3 more
  • 5,000 Cloud Credits$14.99
  • 10,000 Cloud Credits$19.99
  • BYO-LLM Upgrade$24.99

Questions

Is Rd4 free?
Rd4 is free to download, with no in-app purchases.
Is Saymail free?
Saymail is free to download, with in-app purchases available.
Do Rd4 or Saymail have ads?
Neither Rd4 nor Saymail shows ads.
Which is updated more often, Rd4 or Saymail?
Rd4 ships an update every 2 months, and Saymail every 5 weeks. Most recently, Rd4 was updated on October 29, 2026 and Saymail on October 25, 2026.

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