Comparison

Slashy Mail vs Superhuman Go

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

Head to head
About

Slashy Mail

A streamlined email client designed for Gmail users. It enables rapid inbox management, efficient searching, and quick replies. Features like reminders and scheduled sending help manage follow-ups effectively.

Highlights
  • Fast inbox triage
  • Quick search
  • Rapid replies
  • Compose with attachments
  • Reminders
  • Scheduled send
Features
Read full description

Slashy is a fast, focused email client for Gmail and Outlook. Quickly triage your inbox, search threads, reply fast, and compose with attachments. Use reminders and scheduled send to stay on top of follow-ups. Connect your Google or Microsoft account to access your existing mailbox and manage email efficiently from mobile.

About

Superhuman Go

This AI assistant works across your devices to help with writing, summarizing documents, scheduling meetings, and finding information. It syncs with your desktop experience, allowing you to seamlessly continue conversations and access context from other integrated tools.

Highlights
  • Summarize long documents
  • Brainstorm project ideas
  • Schedule meetings
  • Draft and polish emails/reports
  • Provide meeting refreshers
  • Improve writing structure and tone
  • Syncs across desktop and mobile
Features
Read full description

Superhuman Go, from the makers of Grammarly, is the AI assistant that works everywhere you work, including your phone. Bring Go with you and catch up during your commute, get quick help with your writing, or easily find the answers you need wherever you are. And since the Go mobile app syncs with your desktop experience, you can begin a conversation in one spot and continue it in another. GREAT WAYS TO USE GO * Have Go give you a brief summary of a long document * Chat with Go and brainstorm ideas for your latest project * Task Go with finding a good time for a meeting and schedule it in a tap * Ask Go for help drafting and polishing emails or reports, right from your phone * Before heading into a big meeting, ask Go to give you a quick refresh so you’re up to date on all the latest BUILT FOR BETTER WRITING With Grammarly’s years of insights intact, Go is the perfect AI assistant to help with your writing. Whether you want to fit your tone to your audience, get help improving structure, or detect text that resembles common AI phrases, you always have the specific help you need with you. TAKE YOUR CONTEXT WITH YOU Once connected with the desktop versions of Go, you can instantly get information from other tools you use, like: * Superhuman Mail * Google Calendar * Google Docs * Confluence * Outlook * Asana * Gmail * Jira So the context you need is always at your fingertips. (Note: connectors require a paid plan) TRY FOR FREE Spend less time chasing work and more time doing your best work. Download Superhuman Go today. By installing Superhuman’s mobile app, you agree to Superhuman’s Terms of Service (Superhuman Terms of Service) and acknowledge that you have read Superhuman’s Privacy Policy (Privacy Policy | Superhuman ). California residents, please see the California Privacy Notice (Privacy Policy | Superhuman ).

Screenshots

Slashy Mail4 screens
Superhuman Go4 screens

Verdict

The call

The clearest difference is update cadence: Slashy Mail at every 3 days against Superhuman Go's every 5 weeks. Slashy Mail also leads on ratings volume (16 vs 1) and iOS requirement (16.4 vs 18.0). Superhuman Go's advantage is review sentiment (100% vs 80%). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Superhuman Go holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Slashy Mail has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of Slashy Mail's written reviews are positive against 100% of Superhuman Go's.

UpkeepUpdate frequency

Slashy Mail ships an update every 3 days, Superhuman Go every 5 weeks. Both last shipped on November 5, 2026.

Scorecard4 real differences · 6 level
Slashy Mail versus Superhuman Go: the parameters behind the verdict, then further details
ParameterSlashy MailSuperhuman Go
PriceFreeFree
Rating4.8 (16 ratings)5.0 (1 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings16 — better1
Update frequencyEvery 3 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better18.0
Further details — not scored
Size71 MB42 MB
Age rating12++12
DeveloperDhruv RoongtaSuperhuman Platform Inc

Customer experience

Slashy Mail

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Superhuman Go

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Slashy Mail

No in-app purchases

None

Superhuman Go

No in-app purchases

Questions

Is Slashy Mail free?
Slashy Mail is free to download, with no in-app purchases.
Is Superhuman Go free?
Superhuman Go is free to download, with no in-app purchases.
Which has better reviews, Slashy Mail or Superhuman Go?
Superhuman Go is rated higher. Slashy Mail averages 4.8 out of 5 from 16 ratings, while Superhuman Go averages 5.0 from 1 ratings.
Do Slashy Mail or Superhuman Go have ads?
Neither Slashy Mail nor Superhuman Go shows ads.
Which is updated more often, Slashy Mail or Superhuman Go?
Slashy Mail ships an update every 3 days, and Superhuman Go every 5 weeks. Most recently, Slashy Mail was updated on November 5, 2026 and Superhuman Go on November 5, 2026.

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