# SaySum vs Synapse

The clearest difference is update cadence: Synapse at every 2 days against SaySum's every 3 weeks. SaySum's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. SaySum sells 8 in-app purchases, starting at $0.99 per month and Synapse sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SaySum ships an update every 3 weeks, Synapse every 2 days. Both last shipped on September 15, 2026.

## The numbers

| Metric | SaySum | Synapse |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 9 MB | 40 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [DING JIE TSAI](https://appshunter.io/developer/1805095579) | [Halit Seyfullah Baskurt](https://appshunter.io/developer/1729090764) |

## What reviewers say

### SaySum

[App page](https://appshunter.io/ios/app/saysum/id6744838207)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly 60-minute credits | $0.99 | per month |
| Monthly 120-minute credits | $1.99 | per month |
| Weekly 120-minute credits | $1.99 | per 7 days |
| Monthly 180-minute credits | $2.99 | per month |
| Monthly 300-minute credits | $4.99 | per month |
| Monthly 650-minute credits | $9.99 | per month |
| Monthly 1400-minute credits | $19.99 | per month |
| Monthly 2000-minute credits | $29.99 | per month |


### Synapse

[App page](https://appshunter.io/ios/app/synapse-ai-note-taker/id6748574135)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $3.99 | per 7 days |
| Take Notes With AI \| 1w | $5.99 | per 7 days |
| PRO (1m) | $14.99 | per month |


## Frequently asked questions

### Is SaySum free?

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

### Is Synapse free?

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

### Do SaySum or Synapse have ads?

Neither SaySum nor Synapse shows ads.

### Which is updated more often, SaySum or Synapse?

SaySum ships an update every 3 weeks, and Synapse every 2 days. Most recently, SaySum was updated on September 15, 2026 and Synapse on September 15, 2026.

---

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