OptiListen vs Marco
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OptiListen
Enhance your listening abilities with this straightforward application. Track your progress during audio or video calls and build your skills over time. It's designed for anyone looking to improve their active listening.
- Set listening goals
- Track session results
- Build listening skills
- Use with audio/video calls
- Local data storage
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OptiListen is an easy to use app, created by and for folks who would like to listen a little more. Put your headphones on, start a session, set a goal, and see how you do. With OptiListen, you can track your results over time, and build your listening skills, one audio or video call at a time. Note: We're launching OptiListen as a free app and all data is kept locally on your phone.
Marco
Consolidate all your email accounts into a single, fast inbox. This privacy-focused application offers offline access, instant syncing, and a clean interface for managing multiple email providers on Apple devices.
- Unified inbox for all accounts
- Native Apple experience
- Offline email access
- Privacy-first design
- Instant speed
- Smart email views
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All your email accounts, one fast inbox. Marco is a fast, privacy-first email app that unifies Gmail, iCloud, Outlook, Yahoo, and IMAP accounts into one clean inbox. Works offline, syncs instantly, and runs natively on iPhone, iPad, and Mac. Key features: • Unified inbox for all accounts – Gmail, iCloud, Outlook, Yahoo, Exchange, and any IMAP provider in one place. • Native Apple experience – Built for iPhone, iPad, and Mac with full keyboard shortcuts and system integration. • Works offline – Read, search, and compose without a connection. Everything syncs when you're back online. • Privacy-first email – No tracking, no data selling, no ads. Your emails stay yours. • Instant speed – Opens, searches, and sends faster than default mail apps. • Smart email views – Filter by account, label, or sender. Zero inbox clutter. Tired of slow, bloated email clients? Marco is the lightweight, private alternative to Spark, Superhuman, and Apple Mail — with multi-account support, offline access, and no subscription required.
Screenshots
Verdict
The clearest difference is rating: OptiListen at 5.0 against Marco's 3.7. OptiListen also leads on iOS requirement (11.0 vs 17.0). Marco's advantage is update cadence (every 4 days vs every 6 months). On price, ratings volume, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OptiListen holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
OptiListen ships an update every 6 months, Marco every 4 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | OptiListen | Marco |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | — | 12.5% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 6 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 19 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | Christian Crumlish | Marco Technology Inc. |
Customer experience
OptiListen
Marco
In-app purchases
OptiListen
No in-app purchases
Marco
No in-app purchases
