# FLXBL vs SinnSyn

The clearest difference is in-app purchases: FLXBL at none against SinnSyn's 2. FLXBL also leads on ads (none vs shown) and update cadence (monthly vs every 11 months). SinnSyn's advantage is device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. SinnSyn sells 2 in-app purchases, starting at $9.99 per month. FLXBL asks for nothing beyond the download.

FLXBL ships an update monthly, SinnSyn every 11 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | FLXBL | SinnSyn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 11 months |
| Size | 54 MB | 108 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [FLXBL AS](https://appshunter.io/developer/1558529815) | [Sondre Risholm Liverd](https://appshunter.io/developer/1637069234) |

## What reviewers say

### FLXBL

[App page](https://appshunter.io/ios/app/flxbl/id1558529813)

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

**In-app purchases:** none


### SinnSyn

[App page](https://appshunter.io/ios/app/sinnsyn/id1637069232)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Månedsabonnement | $9.99 | per month |
| Årsabonnement | $99.99 | per year |


## Frequently asked questions

### Is FLXBL free?

FLXBL is free to download, with no in-app purchases.

### Is SinnSyn free?

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

### Do FLXBL or SinnSyn have ads?

SinnSyn shows ads; FLXBL does not.

### Which is updated more often, FLXBL or SinnSyn?

FLXBL ships an update monthly, and SinnSyn every 11 months. Most recently, FLXBL was updated on October 8, 2026 and SinnSyn on October 1, 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.*