# Justlo vs Harmonizer

The clearest difference is rating: Harmonizer at 4.9 against Justlo's 4.5. Harmonizer also leads on update cadence (every 5 days vs monthly). Justlo's advantage is review sentiment (80% vs 64%) and chart position (#195 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Justlo sells 4 one-off in-app purchases and Harmonizer sells 6 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Harmonizer holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 524 and 168 respectively. Written reviews complicate that: 80% of Justlo's written reviews are positive against 64% of Harmonizer's, so the app with the better star average is not the one people write more warmly about.

Justlo ships an update monthly, Harmonizer every 5 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Justlo | Harmonizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (524 ratings)](https://appshunter.io/ios/app/justlo/id6444768245/reviews) | **[4.9 (168 ratings)](https://appshunter.io/ios/app/harmonizer-harmony-dating-ai/id6535688381/reviews)** |
| Number of ratings | **524** | 168 |
| Positive reviews | **79.5% of reviews** | 63.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#195** | — |
| Size | 54 MB | 62 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Justlin Ltd.](https://appshunter.io/developer/1200732611) | [Harmolabs Inc.](https://appshunter.io/developer/1756921889) |

## What reviewers say

### Justlo

[App page](https://appshunter.io/ios/app/justlo/id6444768245)

**Currently charting:** #195 Top Grossing · Social Networking (US App Store)

Discover and connect with like-minded individuals in your local area. Focus on building meaningful, lasting relationships through shared interests and genuine conversations. Explore profiles, chat directly, and utilize a smart matching system to find new friends.

**Highlights:** Discover local people with shared interests, Browse profiles and start conversations, Smart matching system for new suggestions, In-app chat for direct communication, User privacy and control over shared information, User reporting for unwanted contact

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Desperate | $10.99 | one-time |
| Satisfying | $22.99 | one-time |
| Gold | $55.99 | one-time |
| Royale | $149.99 | one-time |

**What reviewers like**

- 👍 Great app
- 👍 Highly recommended
- 👍 Reliable and trustworthy
- 👍 Easy to use
- 👍 Clean design

**What reviewers complain about**

- 💰 Paying to message people is expensive
- 💰 Coins are too expensive
- 💰 Need more ways to earn free coins
- 🐛 Many fake profiles
- 🐛 Developers send fake requests to make users buy coins

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Add subscription option instead of coins
- Implement a way to earn free coins (e.g., through ads)


### Harmonizer

[App page](https://appshunter.io/ios/app/harmonizer-harmony-dating-ai/id6535688381)

This app uses scientifically validated methods to help you find a partner for a lasting relationship. It focuses on predicting couple compatibility and long-term success, based on extensive research and real-life success stories.

**Highlights:** Scientific prediction of relationship longevity, Psychological compatibility assessment, Guaranteed daily match, Personalized partner recommendations, Detailed compatibility reports

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Harmonizer Weekly Plan – 30% OFF | $6.99 | per 7 days |
| Harmonizer Weekly Plan | $8.99 | per 7 days |
| Harmonizer Trial Monthly Plan | $29.99 | per month |
| Harmonizer Monthly Plan | $29.99 | per month |
| Harmonizer Quarterly Plan -70% OFF | $79.99 | per 3 months |
| Harmonizer Quarterly Plan | $79.99 | per 3 months |


## Frequently asked questions

### Is Justlo free?

Justlo is free to download, with in-app purchases available.

### Is Harmonizer free?

Harmonizer is free to download, with in-app purchases available.

### Which has better reviews, Justlo or Harmonizer?

Harmonizer is rated higher. Justlo averages 4.5 out of 5 from 524 ratings, while Harmonizer averages 4.9 from 168 ratings.

### Do Justlo or Harmonizer have ads?

Neither Justlo nor Harmonizer shows ads.

### Which is updated more often, Justlo or Harmonizer?

Justlo ships an update monthly, and Harmonizer every 5 days. Most recently, Justlo was updated on October 30, 2026 and Harmonizer on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*