Comparison

Martin vs Harmonize

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

Head to head
About

Martin

This AI-powered assistant learns your preferences and workflows to proactively help with tasks. It can research, set reminders, manage your schedule, and communicate via various channels, building a personal relationship to become more useful over time.

Highlights
  • Voice and text interaction
  • Proactive task management
  • Research capabilities
  • Calendar and to-do management
  • Email and Slack integration
  • Personalized learning of preferences
Features
Read full description

Meet Martin, your AI personal assistant. Reachable by voice, SMS, WhatsApp, email, or phone, Martin builds a personal relationship with you, getting to know what matters most. Martin can do research for you, set reminders, manage your to-dos and calendar, check your email, and use Slack. As he becomes familiar with your preferences and workflows, Martin reaches out proactively to make himself as useful as possible. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Harmonize

Features
Read full description

Harmonize is a focused calendar planner designed to help you see your time clearly and build a week that fits. Plan your day, week, or month from one calm, consistent workspace. Create events in seconds, review upcoming commitments in a simple agenda, and organize calendars with colors that make your schedule easier to understand. With Harmonize, you can: • View your schedule by day, week, month, or agenda • Create and edit events quickly • Set recurring events • Organize calendars with custom colors • Keep your schedule available on your device Harmonize is built for students, professionals, and anyone who wants a straightforward way to plan without unnecessary complexity.

Screenshots

Martin4 screens
Harmonize4 screens

Verdict

The call

The clearest difference is in-app purchases: Harmonize at none against Martin's 4. Harmonize also leads on update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement 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. Martin sells 4 in-app purchases, starting at $35.00 per month. Harmonize asks for nothing beyond the download.

UpkeepUpdate frequency

Martin ships an update weekly, Harmonize every 3 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

Scorecard2 real differences · 8 level
Martin versus Harmonize: the parameters behind the verdict, then further details
ParameterMartinHarmonize
PriceFreeFree
Rating4.3 (262 ratings) — better—
Positive reviews39.4% of reviews—
Number of ratings262 — better—
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size28 MB43 MB
Age rating4+4+
DeveloperMartin AIWALTER ARMSTRONG KENNEDY

Bugs and requests

Martin

Reported bugs

15 issues
  • Cannot login with correct credentials
  • SMS/texting feature not working
  • Email connection and sending failures
  • Calendar integration errors and unwanted event creation
  • Voice command/microphone not functioning
Show 10 more
  • App crashes when adding dates to calendar
  • Cannot connect Gmail or iCloud accounts
  • 6-digit code not being sent during signup
  • Conversation context lost between interactions
  • Reminders not arriving or arriving late
  • Badge notifications stuck and cannot be cleared
  • Integration status shows inactive despite being connected
  • Airpods microphone compatibility issues
  • Auto-renewal without proper notification
  • Internal service errors on account connection

Requested features

10 requests
  • Location-based reminders
  • Notion integration
  • Desktop/Mac application
  • Better speech recognition
  • More app integrations
Show 5 more
  • Lower pricing tier
  • Phone calling on behalf of users
  • Improved UI/UX design
  • Better voice mode functionality
  • More automation capabilities

Harmonize

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Martin

Subscriptions4
  • Martin Basic Monthly7 Days trial$35.001 Month
  • Martin Pro Monthly7 Days trial$49.001 Month
  • Martin Basic Yearly7 Days trial$250.001 Year
Show 1 more
  • Martin Pro Yearly7 Days trial$359.001 Year
None

Harmonize

No in-app purchases

Questions

Is Martin free?
Martin is free to download, with in-app purchases available.
Is Harmonize free?
Harmonize is free to download, with no in-app purchases.
Do Martin or Harmonize have ads?
Neither Martin nor Harmonize shows ads.
Which is updated more often, Martin or Harmonize?
Martin ships an update weekly, and Harmonize every 3 days. Most recently, Martin was updated on October 13, 2026 and Harmonize on September 29, 2026.

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