# Radius On Map vs Synapse

The clearest difference is in-app purchases: Radius On Map at none against Synapse's 2. Radius On Map also leads on ratings volume (82 vs 4). Synapse's advantage is ads (none vs shown) and rating (5.0 vs 4.5). On price, update cadence and device support there is nothing between them.

Both are free to download. Synapse sells 2 in-app purchases, starting at $6.99 per month. Radius On Map asks for nothing beyond the download.

Synapse holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Radius On Map has 82 ratings behind it against 4, so its average is the more settled of the two.

Radius On Map ships an update fortnightly, Synapse every 11 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Radius On Map | Synapse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (82 ratings)](https://appshunter.io/ios/app/radius-on-map-draw-circles/id6740818227/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/synapse-stay-close/id6763803066/reviews)** |
| Number of ratings | **82** | 4 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | **Ad-supported** | Freemium |
| Size | 4 MB | 58 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [takeshi ogawa](https://appshunter.io/developer/1676749157) | [Hovik Apinyan](https://appshunter.io/developer/1895497403) |

## What reviewers say

### Radius On Map

[App page](https://appshunter.io/ios/app/radius-on-map-draw-circles/id6740818227)

Easily visualize distances with a clear radius around any map pin. Set multiple circles to compare, search locations, and explore what's within a specific range. Offers standard and satellite map views with automatic pin saving for quick access.

**Highlights:** Set up to three radius circles per pin, Location search and exploration, Standard and satellite map views, Automatic pin saving, Distance comparison

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

**In-app purchases:** none


### Synapse

[App page](https://appshunter.io/ios/app/synapse-stay-close/id6763803066)

This app helps you stay connected with the people who matter most by remembering important details and suggesting when to reach out. It provides gentle nudges and conversation starters to bridge the gap between wanting to connect and actually doing so.

**Highlights:** Personalized contact reminders, Remembers key personal details, Customizable contact frequency, Gentle nudges for outreach, Conversation starter suggestions, Privacy-focused design

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synapse Premium | $6.99 | per month |
| Synapse Premium | $59.99 | per year |


## Frequently asked questions

### Is Radius On Map free?

Radius On Map is free to download, with no in-app purchases.

### Is Synapse free?

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

### Which has better reviews, Radius On Map or Synapse?

Synapse is rated higher. Radius On Map averages 4.5 out of 5 from 82 ratings, while Synapse averages 5.0 from 4 ratings.

### Do Radius On Map or Synapse have ads?

Radius On Map shows ads; Synapse does not.

### Which is updated more often, Radius On Map or Synapse?

Radius On Map ships an update fortnightly, and Synapse every 11 days. Most recently, Radius On Map was updated on October 30, 2026 and Synapse on October 28, 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.*