Comparison

SuperDuper Terminal vs MonsterMailbox

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

Head to head
About

SuperDuper Terminal

Features
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SuperDuper Terminal is a small, fast SSH client for iPhone, built for the way people actually work with a remote box from a phone: check on a long-running job, restart a service, answer a prompt from an agent that is still running. WHAT IT DOES โ€ข Full SSH terminal with a real PTY โ€” colours, cursor keys, everything a shell expects โ€ข tmux sessions by default, so closing the app or losing signal does not kill your work; reconnect and you are exactly where you left off โ€ข Multiple servers and multiple live sessions, switchable from a tab strip โ€ข A keyboard row built for the command line: Esc, Ctrl, Tab, arrows, pipe and slash โ€” the keys iOS hides from you โ€ข Ed25519, ECDSA and RSA keys generated on device and stored in the Keychain, protected by Face ID โ€ข Port forwarding for the times you need a remote port on your phone KEYS STAY ON THE DEVICE Private keys are generated on the iPhone and kept in the Keychain, guarded by Face ID or your passcode. They are never uploaded, never synced to us, and there is no account to create. The app talks to your servers and to nobody else โ€” there is no analytics SDK and no backend of ours in the path. BUILT FOR WORKING WITH CODING AGENTS If you run Claude Code or a similar agent on a VPS, the terminal keeps the session alive under tmux and gives you a one-tap way to answer it from your phone. The accessory row includes shortcuts for the keys those tools ask for most. Open source: github.com/fortunto2/swift-terminal

About

MonsterMailbox

Features
Read full description

Monster Mailbox is your AI mail crew. Agents will be able to triage every message, hold the suspicious ones, and review every send before it leaves your outbox. Built for people who'd rather not babysit a Gmail tab. Or give your agent access to anything sensitive. WHAT YOU GET โ€” Smart Inbox triage. Each message lands in Trusted, Held, or Rejected based on signals your agents learn over time. You only see the mail that actually deserves your attention. โ€” Outbox approvals. Every outbound message gets a quick second look. Suspicious link in a draft? Caught before it sends. Wrong recipient? Flagged. โ€” AI agents per address. Spin up dedicated assistants for sales@, support@, hello@, or anything else. Pause and resume them from one screen. โ€” Push notifications you actually want. Priority mail only, not the firehose. โ€” Native iOS, built in Flutter. Cold-launches fast, works offline-first for triage decisions. WHO IT'S FOR โ€” Solo founders and operators drowning in inbound. โ€” Engineers who want their mail in plain text and their automations transparent. โ€” Anyone who's been burned by a "Reply All" they couldn't take back. HOW IT WORKS Connect a Monster Mailbox address (or several). Your agents do the heavy lifting โ€” quarantine, classification, draft replies, send approvals. You stay in the loop without staying in your inbox. PRIVACY Your mail is yours. Agents run against your account on your terms. See monstermailbox.com/privacy for the full policy. QUESTIONS Email support@monstermailbox.com or visit monstermailbox.com.

Screenshots

SuperDuper Terminal2 screens
MonsterMailbox4 screens

Verdict

The call

The clearest difference is iOS requirement: MonsterMailbox at 13.0 against SuperDuper Terminal's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 4 level
SuperDuper Terminal versus MonsterMailbox: the parameters behind the verdict, then further details
ParameterSuperDuper TerminalMonsterMailbox
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.013.0 โ€” better
Further details โ€” not scored
Size8 MB20 MB
Age rating4+4+
DeveloperRustam SALAVATOVAll In Networks

In-app purchases

None

SuperDuper Terminal

No in-app purchases

None

MonsterMailbox

No in-app purchases

Questions

Is SuperDuper Terminal free?
SuperDuper Terminal is free to download, with no in-app purchases.
Is MonsterMailbox free?
MonsterMailbox is free to download, with no in-app purchases.
Do SuperDuper Terminal or MonsterMailbox have ads?
Neither SuperDuper Terminal nor MonsterMailbox shows ads.

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